Panel fastener estimator

Sheathing Fastener Calculator

Estimate screws or nails for plywood, OSB, subfloor, wall sheathing, or roof sheathing from sheet count, panel size, edge spacing, field spacing, waste, and box count.

Units

Sheets / panels Sheet length (ft)Sheet width (ft)Edge spacing (in)Field row spacing (in)Fasteners along field rows (in)Waste / dropped fasteners (%)Fasteners per box Cost per box ($)

Fasteners to buy

Boxes to buy

Per sheet

Rough cost

Fastening schedules must match the assembly

This is a quantity estimate only. Structural panels, shear walls, roof decks, subfloors, corrosion exposure, nail size, screw type, edge distance, and local code can require a specific schedule.

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Sheathing fastener formula

Edge fasteners per sheet = sheet perimeter ÷ edge spacing

Field fasteners = interior rows × fasteners along each row

Total fasteners = sheets × per-sheet fasteners × (1 + waste %)

Sample takeoff

Twenty 4×8 sheets with 6 in edge spacing, 12 in field rows, 12 in field spacing, and 10% waste need about 1,606 fasteners, or four 500-count boxes.Twenty 1.2×2.4 m sheets with 150 mm edge spacing, 300 mm field rows, 300 mm field spacing, and 10% waste need about 1,562 fasteners, or four 500-count boxes.

Sheathing Fastener Calculator FAQ

How does this sheathing fastener calculator work?+

It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. Use your required fastening schedule for the panel type and structural assembly.It multiplies measured job dimensions by the coverage, spacing, or package yield you enter, adds waste, then rounds the buy quantity up. Use your required fastening schedule for the panel type and structural assembly.

Should I use the default waste value?+

Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.Use the default for a quick planning estimate, then raise it for cuts, odd layouts, breakage, bad access, or product-specific loss.

Is this a bid or code approval?+

No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.No. It is a material planning calculator. Verify product data, local code, structural requirements, electrical requirements, and supplier packaging before ordering or building.