<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fd36e-62a0-79dd-a12e-b76c6e7bc593,g:6b98a0fc-8944-4c2e-b6e5-d0c0b4b27eaa-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="lpx-20260930.xsd#CondensedConsolidatedStatementsofIncome"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-7aa8-ad85-e8a86d797774" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019fd36e-6368-7aaf-b1ea-4a970a2839f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-7aa8-ad85-e8a86d797774" xlink:to="loc_us-gaap_GrossProfit_019fd36e-6368-7aaf-b1ea-4a970a2839f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019fd36e-6368-79c9-82fd-1595153b5889" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-7aa8-ad85-e8a86d797774" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019fd36e-6368-79c9-82fd-1595153b5889" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_019fd36e-6368-716c-8ac7-e7c21736648c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-7aa8-ad85-e8a86d797774" xlink:to="loc_us-gaap_AssetImpairmentCharges_019fd36e-6368-716c-8ac7-e7c21736648c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-6368-70c0-a08b-440f284bdc48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-7aa8-ad85-e8a86d797774" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-6368-70c0-a08b-440f284bdc48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019fd36e-6368-79f8-99da-48303aad8c3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019fd36e-6368-72e2-90f7-9be627c12a01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019fd36e-6368-79f8-99da-48303aad8c3a" xlink:to="loc_us-gaap_Revenues_019fd36e-6368-72e2-90f7-9be627c12a01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019fd36e-6368-7838-b5f4-361b3b8faa18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019fd36e-6368-79f8-99da-48303aad8c3a" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019fd36e-6368-7838-b5f4-361b3b8faa18" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019fd36e-6368-748e-a314-cb97b5fbb3e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-7946-b539-177591b10004" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_019fd36e-6368-748e-a314-cb97b5fbb3e6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-7946-b539-177591b10004" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019fd36e-6368-7d69-b428-e9361482f12e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_019fd36e-6368-748e-a314-cb97b5fbb3e6" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019fd36e-6368-7d69-b428-e9361482f12e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_019fd36e-6368-7c36-b956-6f8e95796d36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_019fd36e-6368-748e-a314-cb97b5fbb3e6" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_019fd36e-6368-7c36-b956-6f8e95796d36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-76a8-841d-a50120ab3ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-757d-a477-f95c27fcd1b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-76a8-841d-a50120ab3ff6" xlink:to="loc_us-gaap_OperatingIncomeLoss_019fd36e-6368-757d-a477-f95c27fcd1b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_019fd36e-6368-7ac5-b03a-1e299eccce62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-76a8-841d-a50120ab3ff6" xlink:to="loc_us-gaap_InterestExpense_019fd36e-6368-7ac5-b03a-1e299eccce62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNonoperating_019fd36e-6368-7b56-8a82-fd7940ead9fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeNonoperating"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-76a8-841d-a50120ab3ff6" xlink:to="loc_us-gaap_InvestmentIncomeNonoperating_019fd36e-6368-7b56-8a82-fd7940ead9fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019fd36e-6368-7a0a-9933-3e8519b2d1b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019fd36e-6368-76a8-841d-a50120ab3ff6" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019fd36e-6368-7a0a-9933-3e8519b2d1b6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="lpx-20260930.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019fd36e-6368-715b-8e4f-1415aab7f8be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019fd36e-6368-7865-a36a-0fbd5bdb56d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019fd36e-6368-715b-8e4f-1415aab7f8be" xlink:to="loc_us-gaap_ProfitLoss_019fd36e-6368-7865-a36a-0fbd5bdb56d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019fd36e-6368-7b32-bde9-0e165baf13cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_019fd36e-6368-715b-8e4f-1415aab7f8be" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019fd36e-6368-7b32-bde9-0e165baf13cf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="lpx-20260930.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019fd36e-6368-7830-94ad-7b53c5667ec6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:to="loc_us-gaap_CommonStockValue_019fd36e-6368-7830-94ad-7b53c5667ec6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019fd36e-6368-71cc-9ba7-c02d6b4ea2cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019fd36e-6368-71cc-9ba7-c02d6b4ea2cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019fd36e-6368-7f7f-8691-07362c471644" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019fd36e-6368-7f7f-8691-07362c471644" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_019fd36e-6368-7aa5-a133-db721da99d92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:to="loc_us-gaap_TreasuryStockValue_019fd36e-6368-7aa5-a133-db721da99d92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019fd36e-6368-7473-8ccf-72193fb422cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019fd36e-6368-70cb-b179-74e99ae064d9" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019fd36e-6368-7473-8ccf-72193fb422cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019fd36e-6368-7653-86c6-d2ff0e57ca61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019fd36e-6368-7ded-82eb-391af004324f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019fd36e-6368-7653-86c6-d2ff0e57ca61" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019fd36e-6368-7ded-82eb-391af004324f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_019fd36e-6368-7f34-9eaf-278c189b7258" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019fd36e-6368-7653-86c6-d2ff0e57ca61" xlink:to="loc_us-gaap_ReceivablesNetCurrent_019fd36e-6368-7f34-9eaf-278c189b7258" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019fd36e-6368-7731-8136-f2433592eba1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019fd36e-6368-7653-86c6-d2ff0e57ca61" xlink:to="loc_us-gaap_InventoryNet_019fd36e-6368-7731-8136-f2433592eba1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_019fd36e-6368-7c99-887e-2aee9e93a2d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019fd36e-6368-7653-86c6-d2ff0e57ca61" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_019fd36e-6368-7c99-887e-2aee9e93a2d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019fd36e-6368-7661-8fe3-7e3b7933f0eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-6368-70bc-b425-9dd875545d8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019fd36e-6368-7661-8fe3-7e3b7933f0eb" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-6368-70bc-b425-9dd875545d8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_019fd36e-6368-758a-95b7-de5bd3c07bce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019fd36e-6368-7661-8fe3-7e3b7933f0eb" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_019fd36e-6368-758a-95b7-de5bd3c07bce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019fd36e-6368-79f5-8478-2306c59b467c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_AssetsCurrent_019fd36e-6368-79f5-8478-2306c59b467c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019fd36e-6368-7eb7-9d0c-891aed82125d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019fd36e-6368-7eb7-9d0c-891aed82125d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_TimberAndTimberLicenses_019fd36e-6368-7061-a6d6-4db9727508c6" xlink:href="lpx-20260930.xsd#lpx_TimberAndTimberLicenses"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_lpx_TimberAndTimberLicenses_019fd36e-6368-7061-a6d6-4db9727508c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019fd36e-6368-7e92-8636-6cb2a7cb99c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019fd36e-6368-7e92-8636-6cb2a7cb99c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_019fd36e-6368-7648-8fd3-2a1565e9bde5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_019fd36e-6368-7648-8fd3-2a1565e9bde5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019fd36e-6368-766a-b679-735b1d09f01d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_019fd36e-6368-766a-b679-735b1d09f01d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019fd36e-6368-7c67-9a2e-acb54f91b98c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019fd36e-6368-7c67-9a2e-acb54f91b98c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDeferredIncome_019fd36e-6368-7abc-b60d-97112d109f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsDeferredIncome"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019fd36e-6368-7b23-b272-d58400be7359" xlink:to="loc_us-gaap_DeferredTaxAssetsDeferredIncome_019fd36e-6368-7abc-b60d-97112d109f8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019fd36e-6368-7371-9e28-585547f0ce6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019fd36e-6368-7cd1-b8f4-01fa8f1378ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019fd36e-6368-7371-9e28-585547f0ce6f" xlink:to="loc_us-gaap_Liabilities_019fd36e-6368-7cd1-b8f4-01fa8f1378ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019fd36e-6368-7914-b62b-9a34b96063cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019fd36e-6368-7371-9e28-585547f0ce6f" xlink:to="loc_us-gaap_StockholdersEquity_019fd36e-6368-7914-b62b-9a34b96063cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019fd36e-6368-7c48-8034-707d7f6e8630" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_LiabilitiesCurrent_019fd36e-6368-7c48-8034-707d7f6e8630" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019fd36e-6368-7e80-aa41-6f2ec76563bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019fd36e-6368-7e80-aa41-6f2ec76563bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019fd36e-6368-7f32-9a1d-f83bf51cfd24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019fd36e-6368-7f32-9a1d-f83bf51cfd24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019fd36e-6368-7125-aadc-f88ce6d2029a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019fd36e-6368-7125-aadc-f88ce6d2029a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_019fd36e-6368-753b-86cc-56685b9accb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_019fd36e-6368-753b-86cc-56685b9accb7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-6368-743b-a0bb-0fb01829906b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019fd36e-6368-74b2-aaf6-a2318892188d" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-6368-743b-a0bb-0fb01829906b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="lpx-20260930.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019fd36e-6368-705f-8001-637bf88d85c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019fd36e-6368-7a42-bdc3-3016c353fc63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019fd36e-6368-705f-8001-637bf88d85c0" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019fd36e-6368-7a42-bdc3-3016c353fc63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_01a17f4a-0d8d-7e03-928e-a015917f27be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019fd36e-6368-705f-8001-637bf88d85c0" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_01a17f4a-0d8d-7e03-928e-a015917f27be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-7ebf-bc64-acdec08536eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_Paymentofdividends_019fd36e-6368-7b2d-bbc9-f5c213db621b" xlink:href="lpx-20260930.xsd#lpx_Paymentofdividends"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-7ebf-bc64-acdec08536eb" xlink:to="loc_lpx_Paymentofdividends_019fd36e-6368-7b2d-bbc9-f5c213db621b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019fd36e-6368-73b0-8f6e-adc69372b0b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-7ebf-bc64-acdec08536eb" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019fd36e-6368-73b0-8f6e-adc69372b0b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019fd36e-6368-7b65-8d2c-fabcf4f78a72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-7ebf-bc64-acdec08536eb" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019fd36e-6368-7b65-8d2c-fabcf4f78a72" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019fd36e-6368-753c-8d48-654b142b0a86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-78fa-90ee-f7670d32aa44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019fd36e-6368-753c-8d48-654b142b0a86" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-78fa-90ee-f7670d32aa44" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019fd36e-6368-732e-b7b7-16ac90e2bc27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019fd36e-6368-753c-8d48-654b142b0a86" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019fd36e-6368-732e-b7b7-16ac90e2bc27" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-778d-a635-8256b63acc93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019fd36e-6368-753c-8d48-654b142b0a86" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019fd36e-6368-778d-a635-8256b63acc93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019fd36e-6368-7b7a-8e86-8b6a6ec14027" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019fd36e-6368-753c-8d48-654b142b0a86" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019fd36e-6368-7b7a-8e86-8b6a6ec14027" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019fd36e-6368-719a-bcaf-07b8a017e498" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_ProfitLoss_019fd36e-6368-719a-bcaf-07b8a017e498" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019fd36e-6368-7dcd-bf03-baeff6038468" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019fd36e-6368-7dcd-bf03-baeff6038468" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_019fd36e-6368-752c-8efd-4e5c6f762f8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillAndIntangibleAssetImpairment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_019fd36e-6368-752c-8efd-4e5c6f762f8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019fd36e-6368-7a0e-a007-6003151d18cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019fd36e-6368-7a0e-a007-6003151d18cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019fd36e-6368-7716-9744-e7edbf320439" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_019fd36e-6368-7716-9744-e7edbf320439" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_019fd36e-6368-7151-9a92-04da239b79e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_019fd36e-6368-7151-9a92-04da239b79e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019fd36e-6368-791c-b00c-e2231d6a3642" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019fd36e-6368-791c-b00c-e2231d6a3642" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_019fd36e-6368-717c-b072-b3c8d96eb565" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInReceivables"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_IncreaseDecreaseInReceivables_019fd36e-6368-717c-b072-b3c8d96eb565" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019fd36e-6368-7820-8a9a-55e58aa7fcd1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019fd36e-6368-7820-8a9a-55e58aa7fcd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019fd36e-6368-71e7-a755-df3a2071da62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019fd36e-6368-71e7-a755-df3a2071da62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019fd36e-6368-7b78-87ed-070773fb17dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019fd36e-6368-7b78-87ed-070773fb17dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxes_019fd36e-6368-7609-9864-1e175cbcfe07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInIncomeTaxes"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019fd36e-6368-7888-bcd0-692acd0ed4d7" xlink:to="loc_us-gaap_IncreaseDecreaseInIncomeTaxes_019fd36e-6368-7609-9864-1e175cbcfe07" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/EarningsperShareDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#EarningsperShareDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/EarningsperShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019fd36e-641f-7d1b-acc9-af37ab9d7388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019fd36e-641f-7b80-9853-c9de38dd2212" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019fd36e-641f-7d1b-acc9-af37ab9d7388" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019fd36e-641f-7b80-9853-c9de38dd2212" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019fd36e-641f-7ad9-a153-a8ba666c420d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019fd36e-641f-7d1b-acc9-af37ab9d7388" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019fd36e-641f-7ad9-a153-a8ba666c420d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofReceivablesDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#SupplementalBalanceSheetInformationScheduleofReceivablesDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019fd36e-641f-745d-a75d-76dc19e9da67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_019fd36e-641f-716e-9eed-6452faaa57ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019fd36e-641f-745d-a75d-76dc19e9da67" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_019fd36e-641f-716e-9eed-6452faaa57ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReceivable_019fd36e-641f-7f1e-b1da-de67fadac97b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReceivable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019fd36e-641f-745d-a75d-76dc19e9da67" xlink:to="loc_us-gaap_IncomeTaxReceivable_019fd36e-641f-7f1e-b1da-de67fadac97b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesGrossCurrent_019fd36e-641f-77e7-b3e0-af7db3d3ef85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivablesGrossCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019fd36e-641f-745d-a75d-76dc19e9da67" xlink:to="loc_us-gaap_OtherReceivablesGrossCurrent_019fd36e-641f-77e7-b3e0-af7db3d3ef85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019fd36e-641f-7d36-9f0c-e80abc01f32b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019fd36e-641f-745d-a75d-76dc19e9da67" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019fd36e-641f-7d36-9f0c-e80abc01f32b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofInventoriesDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#SupplementalBalanceSheetInformationScheduleofInventoriesDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofInventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019fd36e-641f-769f-9943-237371308b02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_Logs_019fd36e-641f-7eae-af11-236615634574" xlink:href="lpx-20260930.xsd#lpx_Logs"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019fd36e-641f-769f-9943-237371308b02" xlink:to="loc_lpx_Logs_019fd36e-641f-7eae-af11-236615634574" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019fd36e-641f-78af-ba77-5052408b75dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019fd36e-641f-769f-9943-237371308b02" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019fd36e-641f-78af-ba77-5052408b75dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019fd36e-641f-79e8-9302-ba76f35cfe2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019fd36e-641f-769f-9943-237371308b02" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019fd36e-641f-79e8-9302-ba76f35cfe2d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019fd36e-641f-7b91-9435-7d20f2f3c5c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019fd36e-641f-769f-9943-237371308b02" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019fd36e-641f-7b91-9435-7d20f2f3c5c7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#SupplementalBalanceSheetInformationScheduleofPropertyPlantandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019fd36e-641f-7c2c-b0e4-d8b253bf5b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019fd36e-641f-7d16-8a69-c949631a9a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019fd36e-641f-7c2c-b0e4-d8b253bf5b69" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019fd36e-641f-7d16-8a69-c949631a9a1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019fd36e-641f-77bb-ba2d-3ca484827ddd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019fd36e-641f-7c2c-b0e4-d8b253bf5b69" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019fd36e-641f-77bb-ba2d-3ca484827ddd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#SupplementalBalanceSheetInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofAccountsPayableandAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_CustomerIncentivePayableCurrent_019fd36e-641f-78ea-8598-79de03f486a2" xlink:href="lpx-20260930.xsd#lpx_CustomerIncentivePayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_lpx_CustomerIncentivePayableCurrent_019fd36e-641f-78ea-8598-79de03f486a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019fd36e-641f-7bfa-b189-8d74ba8c6017" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019fd36e-641f-7bfa-b189-8d74ba8c6017" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_019fd36e-641f-7471-a7a3-a8f7486decc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableTradeCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_us-gaap_AccountsPayableTradeCurrent_019fd36e-641f-7471-a7a3-a8f7486decc8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019fd36e-641f-758e-9bc7-e08abbc6e6ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019fd36e-641f-758e-9bc7-e08abbc6e6ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019fd36e-641f-7411-8399-f8c46f47c1eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_019fd36e-641f-7411-8399-f8c46f47c1eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedSalariesCurrent_019fd36e-641f-7fc8-8af1-391f88d30f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedSalariesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019fd36e-641f-7ee4-8003-a36fe74b150c" xlink:to="loc_us-gaap_AccruedSalariesCurrent_019fd36e-641f-7fc8-8af1-391f88d30f2c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofOtherLongTermLiabilitiesDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#SupplementalBalanceSheetInformationScheduleofOtherLongTermLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/SupplementalBalanceSheetInformationScheduleofOtherLongTermLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_019fd36e-641f-7d88-b3b3-14272d40e355" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_019fd36e-641f-7d88-b3b3-14272d40e355" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_019fd36e-641f-73d7-a733-f0106c70ed19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_019fd36e-641f-73d7-a733-f0106c70ed19" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_019fd36e-641f-783f-839a-27be4b19519e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilityForUncertainTaxPositionsNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:to="loc_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_019fd36e-641f-783f-839a-27be4b19519e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualNoncurrent_019fd36e-641f-763a-9959-54fa9499d215" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductWarrantyAccrualNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:to="loc_us-gaap_ProductWarrantyAccrualNoncurrent_019fd36e-641f-763a-9959-54fa9499d215" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSundryLiabilitiesNoncurrent_019fd36e-641f-70ea-aac9-f7868c9f5878" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherSundryLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_019fd36e-641f-75a7-ba2a-c4454c65ce24" xlink:to="loc_us-gaap_OtherSundryLiabilitiesNoncurrent_019fd36e-641f-70ea-aac9-f7868c9f5878" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/OtherOperatingandNonOperatingIncomeDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#OtherOperatingandNonOperatingIncomeDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/OtherOperatingandNonOperatingIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019fd36e-641f-77c1-85ef-e4c4a4c035aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_019fd36e-641f-7c5b-857d-44001cc0f677" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_019fd36e-641f-77c1-85ef-e4c4a4c035aa" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_019fd36e-641f-7c5b-857d-44001cc0f677" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-641f-7e2c-bea1-ffd5c674d47e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019fd36e-641f-75ed-bec1-9f5f682fbc59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-641f-7e2c-bea1-ffd5c674d47e" xlink:to="loc_us-gaap_RestructuringCharges_019fd36e-641f-75ed-bec1-9f5f682fbc59" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_Productlinediscontinuancecharges_019fd36e-641f-7ff8-b5ca-4e14d6e78577" xlink:href="lpx-20260930.xsd#lpx_Productlinediscontinuancecharges"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-641f-7e2c-bea1-ffd5c674d47e" xlink:to="loc_lpx_Productlinediscontinuancecharges_019fd36e-641f-7ff8-b5ca-4e14d6e78577" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_019fd36e-641f-7d54-8f56-16ca49556756" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-641f-7e2c-bea1-ffd5c674d47e" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_019fd36e-641f-7d54-8f56-16ca49556756" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OtherExpensesNet_019fd36e-641f-7271-a75f-88bf306eb4c8" xlink:href="lpx-20260930.xsd#lpx_OtherExpensesNet"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_019fd36e-641f-7e2c-bea1-ffd5c674d47e" xlink:to="loc_lpx_OtherExpensesNet_019fd36e-641f-7271-a75f-88bf306eb4c8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CommitmentsandContingenciesDetails" xlink:type="simple" xlink:href="lpx-20260930.xsd#CommitmentsandContingenciesDetails"/>
  <link:calculationLink xlink:role="http://www.lpcorp.com/role/CommitmentsandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_019fd36e-641f-7ffd-ad0e-e19e2f5b6ee3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_019fd36e-641f-7815-8631-ab4633ba7107" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualCarryingValueNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_019fd36e-641f-7ffd-ad0e-e19e2f5b6ee3" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_019fd36e-641f-7815-8631-ab4633ba7107" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_019fd36e-641f-7565-8328-e48cedd6d075" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualCarryingValueCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_019fd36e-641f-7ffd-ad0e-e19e2f5b6ee3" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_019fd36e-641f-7565-8328-e48cedd6d075" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
