Roof decking replacement cost
Roof decking replacement cost depends on your roof's size, slope and the crew that climbs it, so the range on this page is a start, not a bid. Call (855) 812-6217 during business hours with your ZIP code and ask for roof decking replacement cost quotes, and licensed roofers near you price it. Quotes cost nothing and you hire only if you want to.
Roof decking replacement cost runs $2 to $6 per sq ft, Angi reports in 2026. A whole-house replacement comes to $2,600 to $9,000.
Hank's crew tore off his old shingles on Monday morning. By 10 a.m. they found soft boards near the eaves. The foreman now wants to add a line to the bill.
Roof decking replacement cost per sheet
| Measure | Price |
|---|---|
| Per sq ft | $2 to $6 |
| Whole roof | $2,600 to $9,000 |
| Building permit | $400 to $1,500 |
| Roofer, hourly | $30 to $90 |
A standard sheet covers 32 sq ft, so $2 to $6 per sq ft is about $64 to $192 a sheet. Prices are from Angi's decking cost guide.
Plywood or OSB
Plywood is thin layers of wood glued crosswise. OSB is wood strands pressed with glue. Both are allowed by most codes for roof sheathing.
Plywood dries out better after a leak. OSB costs less and is more uniform. Match the thickness of the boards around it so the roof stays flat.
How rot is found
Rot is found during tear-off, when the boards are bare. The crew walks the deck and presses with a boot. Soft or black spots get marked and photographed.
Ask for those photos before the new boards go down. A good crew offers them without being asked.
The line on your estimate
A good estimate names a price per sheet and says how many sheets are included. Hank's quote included two. Anything past that is billed at the per-sheet rate.
A quote with no decking line can hide this cost until the roof is open. The FTC's advice to get written estimates is on its home repair scams page. See also our estimate checklist and the repair cost page.
Questions people ask
How much does it cost to replace roof decking?
Angi puts a full decking replacement at $2,600 to $9,000 in 2026. Most reroofs replace only a few sheets, priced one by one.
When should roof decking be replaced?
When it is soft, spongy, delaminated or black with rot. Roofers check it during tear-off, when the boards are open.
Will insurance pay for new roof decking?
If a covered storm caused the damage, decking is usually part of the claim. Rot from years of small leaks is not covered.
Labor cost to replace roof decking?
Angi lists roofers at $30 to $90 an hour when they bill by time. Most quote a set price per sheet instead.
Sources
- Angi, How Much Does Roof Decking Cost to Replace? (2026), checked October 2026
- Federal Trade Commission, Home Repair Scams, consumer.ftc.gov, checked October 2026
Last checked October 2026
What to do now
- Run the calculator with your own footprint, slope and material, and write down low, likely and high.
- Call (855) 812-6217 with your ZIP code and the likely number, or send the job below. The Roof Cost Guide team answers during business hours and matches it with licensed roofers near you.
- Compare three written quotes line by line against your band before you sign anything.
Talk to a local roofer
Roof decking replacement cost depends on your roof's size, slope and the crew that climbs it, so the range on this page is a start, not a bid. Call (855) 812-6217 during business hours with your ZIP code and ask for roof decking replacement cost quotes, and licensed roofers near you price it. Quotes cost nothing and you hire only if you want to.
Call (855) 812-6217 Call (855) 812-6217Outside business hours, send the quote form and a roofer calls you back.
Three local quotes, one request
Send the roof decking replacement cost job with your ZIP code, roof size and the material you want. Up to three licensed roofers near you quote the same job, and we send your details to them and no one else. Quotes cost nothing and you hire only if you want to.