Sheathing Calculator

Enter your wall perimeter or roof dimensions to find out how many 4x8 sheets of OSB or CDX plywood you need, and compare costs across panel types.

Total Wall Length (ft)

Wall Height (ft)

Number of Doors

Number of Windows

Waste Factor (%)

Panel Type

Pricing (edit to match local rates)

7/16" OSB Sheet ($)

1/2" CDX Sheet ($)

5/8" CDX Sheet ($)

Housewrap Roll ($)

Total Area

561 sq ft

510 sq ft net + 10% waste

Sheets Needed

18 sheets

4\u00d78 ft panels

Housewrap

1 roll

9×150 ft rolls ($160.00)

Best Value

7/16" OSB

$484.00

Purchase Option	Quantity	Est. Cost
7/16" OSB + 1 roll housewrapBest value	18 sheets	$484.00
1/2" CDX Plywood + 1 roll housewrap	18 sheets	$736.00
5/8" CDX Plywood + 1 roll housewrap	18 sheets	$844.00

Cheapest option: 7/16" OSB at $484.00OSB is the most common choice for wall sheathing and is significantly cheaper than plywood. Use CDX plywood where local code or high-moisture exposure requires it. Housewrap cost is included in all totals above.

This is a material estimate only. Sheet counts assume standard 4x8 panels with no special layout optimization. Always verify sheathing thickness and nailing schedules with local building codes.