Sheathing Cost Calculator
Sheet goods plus labor. 7/16″ OSB is the low end; ¾″ tongue-and-groove plywood subfloor is the high end. Pick the pitch for roof decking so the sloped area is priced.
Order 74 sheets — units of 4 × 8 sheeting are 50 per lift; sheets are cheaper by the unit.
- Area
- 2,147 ft²
- Waste / cuts 10%
- + 215 ft²
- Coverage to buy
- 2,361 ft²
- Metric
- 199.4 m²
- 4 × 8 ft sheets (32 ft²)
- 74
- 4 × 10 ft sheets (40 ft²)
- 60
- Approx. weight
- 3,700 lb
- Nails / screws, 8d ring shank
- 11 lb
Quantities follow the ticket. Links may earn us a commission at no cost to you; they never change a number.
Get 3 quotes for this plywood & osb job
The estimate above is a national range. A local framing & lumber contractor who sees your site can give you a firm price, and comparing 3 bids is the single biggest lever on what you pay. Tell us where the job is and we will match you with up to 3 contractors who serve your ZIP.
- Your quantities and this estimate go with the request, so you are not starting over.
- No account, no app. Contractors call or text you directly.
- One request. We do not resell your details beyond the matched contractors.
How to calculate plywood or OSB by hand
Sheets = Area (ft²) × pitch factor × (1 + waste) ÷ 32
Worked example
- Area: 24 ft × 16 ft = 384 ft² (a flat floor — pitch factor 1).
- Waste 10%: 384 × 1.10 = 422 ft².
- Sheets: 422 ÷ 32 = 13.2 → 14 sheets of 4 × 8.
- For a 6/12 roof over the same footprint: 384 × 1.118 = 429 ft² per side → 15 sheets per plane.
- 4 × 8 sheet
- 32 ft²
- 4 × 10 sheet
- 40 ft²
- Sheets per 100 ft², 10% waste
- 3.4
- Pitch factor 6/12 · 8/12 · 12/12
- 1.118 · 1.202 · 1.414
How we price this
The low, typical and high columns are the 20th, 50th and 80th percentile of published us national averages for 4 × 8 osb / plywood sheet, delivery and labor. They are estimates for budgeting, not quotes — enter your own supplier and crew prices above to replace them. Ranges are re-checked monthly; see the methodology page for how every number on this site is derived.
- Home Depot / Lowe’s sheet goods pricing — OSB and plywood per sheet by thickness
- HomeAdvisor cost guides — sheathing and subfloor installed $/ft²
Questions crews ask
How much does OSB cost per sheet?
$15–$25 for 7/16″ 4 × 8 OSB in 2026 and $30–$45 for 23/32″ T&G; plywood runs $35–$70 for ½–¾″ CDX and more for sanded grades. Prices track the lumber market and move month to month.
How much does it cost to sheathe a roof?
$2–$5 per square foot installed for the decking alone — $1,700–$4,300 for a 40 × 24 ft footprint at 6/12 (about 2,150 ft² of roof, 74 sheets). Replacing rotten decking during a re-roof is usually priced per sheet at $70–$120 installed.
Is it cheaper to buy sheets by the unit?
Yes — lumber yards discount full units (50 sheets of 4 × 8) by 5–15% and deliver them on a truck with a boom. For a whole-house job order units; for a shed, buy loose sheets.