v3.26.1
Segment and Geographic Information
 12 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
Segment and Geographic Information Segment and Geographic Information
As of March 31, 2026, the Company has four reportable segments:
•Siding & Trim segment - Manufactures fiber cement and PVC exterior siding and trim products, as well as moulding, interior linings, and accessories in the United States. These products are sold in the United States and Canada.
•Deck, Rail & Accessories segment - Manufactures decking, railing, cladding, pergolas, cabanas and related accessories in the United States; these products are sold in the United States and Canada.
•Australia & New Zealand segment - Includes fiber cement products manufactured in Australia and sold in Australia and New Zealand.
•Europe segment - Includes fiber gypsum products and cement bonded boards manufactured in Europe, and fiber cement products manufactured in the United States that are sold in Europe.
The Company’s Chief Operating Decision Maker (“CODM”) is the Chief Executive Officer. The CODM uses segment Operating Income to allocate resources and assess segment performance, primarily through the annual budgeting process and monthly performance reviews. During these reviews, the CODM monitors actual results versus the prior period, forecasted results and the annual plan. The CODM also considers this information in making strategic decisions related to capital allocations. The Company does not report total assets by segment as the Company’s CODM does not assess performance, or allocate resources based on segment assets.
The Company's General Corporate and unallocated R&D costs do not meet the applicable accounting guidance for separate disclosure as a reportable segment, and are reflected as reconciling items to consolidated Net Income. General Corporate costs primarily consist of Asbestos adjustments, officer and employee compensation and related benefits, professional and legal fees, administrative costs, acquisition related costs and rental expense on the Company’s corporate offices, which are not allocated to the reportable segments. Unallocated R&D costs represented the costs incurred by the research and development centers which were costs not directly associated with one of our reportable segments. Beginning July 1, 2025, R&D costs are allocated to the segments. For the fiscal year ended March 31, 2026, $24.2 million was allocated to Siding & Trim, $3.7 million to Australia & New Zealand and $0.6 million to Europe.
The Company does not report Interest, net for each segment as the segments are not held directly accountable for interest.
For additional information on the Company’s reportable segments, see Note 1, “Organization and Significant Accounting Policies – Reportable Segments”.
The following is the Company’s segment information: 
 Operating Income
(Millions of US dollars)Siding &
Trim		Deck, Rail &
Accessories		Australia &
New Zealand		EuropeTotal
For the year ended March 31, 2026
Net sales$2,963.1 $795.2 $520.6 $556.9 $4,835.8 
Cost of goods sold1,844.9 579.9 298.1 383.3 3,106.2 
Gross profit1,118.2 215.3 222.5 173.6 1,729.6 
Selling, general and administrative expenses373.6 222.3 62.4 117.4 775.7 
Restructuring expenses35.6 3.4 1.4 — 40.4 
Other expenses 1
47.1 7.3 4.8 4.0 63.2 
Segment operating income (loss)$661.9 $(17.7)$153.9 $52.2 $850.3 
Reconciliation to consolidated net income 
General Corporate costs 2, 3
(402.7)
Interest, net(231.1)
Other expense, net(9.8)
Income tax expense(102.7)
Consolidated net income$104.0 
____________
1.Other expenses represent R&D costs and acquisition related expenses allocated to the segments.
2.Includes acquisition related expenses.
3.Starting July 1, 2025, the Company began allocating R&D costs to the segments.
 Operating Income
(Millions of US dollars)Siding &
Trim		Australia &
New Zealand		Europe Total
For the year ended March 31, 2025
Net sales$2,863.3 $519.9 $494.3 $3,877.5 
Cost of goods sold1,721.4 301.2 349.9 2,372.5 
Gross profit1,141.9 218.7 144.4 1,505.0 
Selling, general and administrative expenses291.7 56.0 104.0 451.7 
Restructuring expenses— 50.3 — 50.3 
Other expenses 1
9.3 1.4 2.4 13.1 
Segment operating income$840.9 $111.0 $38.0 $989.9 
Reconciliation to consolidated net income
General Corporate 2 and Unallocated R&D costs
(334.0)
Interest, net(10.3)
Other expense, net(0.2)
Income tax expense(221.4)
Consolidated net income$424.0 
For the year ended March 31, 2024
Net sales$2,891.4 $562.8 $482.1 $3,936.3 
Cost of goods sold1,674.8 335.4 337.7 2,347.9 
Gross profit1,216.6 227.4 144.4 1,588.4 
Selling, general and administrative expenses287.1 60.0 96.1 443.2 
Other expenses 1
8.4 1.3 3.3 13.0 
Segment operating income$921.1 $166.1 $45.0 $1,132.2 
Reconciliation to consolidated net income
General Corporate and Unallocated R&D costs(364.8)
Interest, net(15.3)
Other income, net2.7 
Income tax expense(244.6)
Consolidated net income$510.2 
____________
1.Other expenses represent R&D costs allocated to the segments.
2.Includes acquisition related expenses.
Depreciation and Amortization
Years ended March 31
(Millions of US dollars)202620252024
Siding & Trim$230.9 $160.7 $133.8 
Deck, Rail & Accessories202.4 — — 
Australia & New Zealand22.4 19.2 17.0 
Europe30.0 32.4 29.7 
General Corporate and R&D7.8 3.9 4.5 
Total$493.5 $216.2 $185.0 
Capital Expenditures
Years ended March 31
(Millions of US dollars)202620252024
Siding & Trim$220.1 $287.2 $298.1 
Deck, Rail & Accessories46.7 — — 
Australia & New Zealand60.5 53.1 47.8 
Europe46.6 74.3 89.7 
General Corporate and R&D10.0 7.6 13.7 
Total$383.9 $422.2 $449.3 

The following is the Company’s geographical information:
 
Net Sales
Years Ended March 31
(Millions of US dollars)202620252024
United States of America$3,544.5 $2,707.2 $2,743.7 
Australia423.3 401.1 403.8 
Canada213.8 156.1 147.7 
Germany163.9 142.9 140.5 
New Zealand97.3 92.6 87.7 
Other Countries 1
393.0 377.6 412.9 
Total$4,835.8 $3,877.5 $3,936.3 

Long-Lived Assets
March 31
(Millions of US dollars)20262025
United States of America$2,607.8 $1,627.7 
Australia270.9 231.9 
Germany155.4 143.2 
Spain219.2 187.1 
Other Countries 2
65.5 52.2 
Total 3
$3,318.8 $2,242.1 
____________
1Included are all other countries that account for less than 5% of net sales individually, primarily in Great Britain, Switzerland, Denmark, the Netherlands, France and other European countries.
2Included are all other countries that account for less than 5% of long-lived assets individually, primarily in the Netherlands, New Zealand, and Great Britain.
3Long-lived assets include Property, plant and equipment and ROU assets.