Use these sheathing calculators to estimate OSB, plywood, wall sheathing, roof sheathing, floor sheathing, gable ends, panel counts, waste, and repair planning ranges. Material calculators estimate sheet counts. Cost calculators estimate planning ranges, not contractor bids.
Sheathing material calculators
Use these when you need sheet counts, panel quantities, waste, OSB or plywood material planning, and rough material-only estimates.
Sheathing Calculator
Estimate OSB or plywood sheathing sheets for walls, roofs, floors, gable ends, repair areas, openings, panel size, and waste.
Wall Sheathing Calculator
Estimate wall sheathing sheets from wall length, height, openings, gables, panel size, waste, and optional WRB area.
Roof Sheathing Calculator
Estimate roof sheathing sheets from roof planes, footprint, pitch factor, roof type, replacement percentage, panel size, and waste.
Floor Sheathing Calculator
Estimate OSB, plywood, or tongue-and-groove floor sheathing sheets from floor area, openings, panel size, layout difficulty, and waste.
Gable End Sheathing Calculator
Estimate OSB or plywood sheets for triangular gable ends using base width, gable height, openings, panel size, waste, and extra sheets.
OSB Sheathing Calculator
Estimate OSB sheet count and rough material-only cost using area, panel size, waste, extra sheets, and local sheet price.
Plywood Sheathing Calculator
Estimate plywood sheet count and rough material-only cost using area, panel size, waste, extra sheets, and local sheet price.
Sheathing cost and repair calculators
Use these when the job involves replacement, water damage, siding removal, roofing tear-off, flashing repair, WRB failure, rot, or contractor quotes.
Roof Sheathing Replacement Cost Calculator
Estimate roof decking replacement ranges using roof area, replacement scope, material, roof layout, tear-off, hidden damage, and restoration.
Wall Sheathing Cost Calculator
Estimate wall sheathing ranges using wall area, panel material, siding removal, WRB and flashing work, hidden damage, wall height, and access.
Water-Damaged Sheathing Repair Cost Calculator
Estimate repair ranges for rotted, soft, swollen, mold-stained, or water-damaged sheathing behind siding, under roofing, or near floors and gables.
What these calculators do not replace
These calculators estimate material quantities or planning ranges only. They do not replace code review, structural design, manufacturer installation instructions, roof inspection, siding inspection, mold assessment, or a contractor quote based on actual site conditions.