Roof sheathing replacement cost
Replacing one 4 × 8 ft sheet of roof sheathing models at $50 – $121 installed, a mid point of $76 per sheet or $1.57 – $3.79 per sq ft of decking. On a typical 1,800 sq ft roof, replacing the 10% of the deck that a normal re-roof uncovers adds $700 – $1,000 to the job. Replacing every sheet adds $2,800 – $6,800. That is the whole question in two numbers: the rate per sheet, and how many sheets.
Modelled by the Renolume estimating model · engine 2.0.0, data v2026.1 · Last updated . Figures are priced against Salt Lake City, UT — the median of the 17 metros Renolume holds a measured wage sample for. Planning estimates, not contractor quotes.
What each share of the deck adds to a re-roof
The rate is the easy part. What decides the bill is how much of the deck comes off, which nobody knows until the old roofing is stripped.
| Share of deck replaced | Sheets | Added to the job | Roof total |
|---|---|---|---|
| 5% | 2.8 | $600 – $800 | $10,500 – $23,200 |
| 10% | 5.6 | $700 – $1,000 | $10,600 – $23,400 |
| 20% | 11.3 | $900 – $1,500 | $10,800 – $23,900 |
| 35% | 19.7 | $1,200 – $2,400 | $11,100 – $24,800 |
| 50% | 28.1 | $1,400 – $3,400 | $11,400 – $25,800 |
| 100% | 56.3 | $2,800 – $6,800 | $12,800 – $29,200 |
The baseline — the same roof with sound decking and nothing replaced — models at $9,900 – $22,400. Every row above is that job plus the sheathing work, so the "added" column is the number to hold a change order against. A crew that finds 10% of the deck soft is describing a routine repair. A crew that says the whole deck must go is describing a materially different job, and at $2,800 – $6,800 it deserves photographs and a second opinion before you approve it.
Where the money goes on a replaced sheet
A replaced sheet is part panel and part crew time. Knowing the split is what lets you check a per-sheet rate instead of accepting it.
| Component | Modelled cost | Share |
|---|---|---|
| Carpenter labour | $700 – $1,500 | 31.3% |
| Panels, waste and delivery allowance | $1,500 – $3,100 | 68.7% |
The model allows 0.45 crew hours per sheet — cutting the damaged section back to the rafter centres, matching panel thickness to the existing deck, re-nailing to code and keeping the opening dry until the underlayment goes back on. Sheets are 32 sq ft each, so a fully re-decked 1,800 sq ft roof is 56 of them. Per-sheet figures are installed costs: they are the difference between the same roof modelled with no sheathing replaced and with every sheet replaced, so they carry their share of contractor overhead, profit and contingency exactly as the whole-job model does.
Installed cost per sheet by metro
Plywood costs roughly the same everywhere. Carpenters do not — which is why the same repair is a different price in a different city.
| Metro | Per sheet installed | Labour index |
|---|---|---|
| Houston, TX | $47 – $113 | 0.93 |
| Minneapolis, MN | $48 – $115 | 1.12 |
| Atlanta, GA | $48 – $115 | 0.95 |
| Charlotte, NC | $48 – $115 | 0.94 |
| Cleveland, OH | $48 – $117 | 0.98 |
| Dallas, TX | $48 – $117 | 0.96 |
| Chicago, IL | $51 – $122 | 1.18 |
| Detroit, MI | $50 – $122 | 1.02 |
| Salt Lake City, UT | $50 – $121 | 0.98 |
| Phoenix, AZ | $51 – $123 | 1 |
| Miami, FL | $52 – $126 | 0.99 |
| Denver, CO | $53 – $129 | 1.06 |
| Seattle, WA | $55 – $132 | 1.24 |
| Philadelphia, PA | $56 – $136 | 1.14 |
| Boston, MA | $60 – $143 | 1.34 |
| New York, NY | $60 – $145 | 1.38 |
| San Francisco, CA | $64 – $155 | 1.42 |
The spread runs from $71 in Houston to $95 in San Francisco, and it moves with the local wage index — the panel costs much the same everywhere. If a quote uses a per-sheet rate well outside your metro's band, the difference is either scope — full-sheet replacement versus patching, or thicker panel stock — or margin.
What else changes when the deck comes off
The costs that arrive with sheathing work, in the order they usually surface.
- Panel thickness has to match. Older homes are often sheathed in planks or thinner ply than current code allows. Bringing a section up to modern thickness leaves a step at the joint, which is either shimmed or the surrounding sheets are replaced too — a scope increase, not a price increase.
- Wet decking means the leak had somewhere to go. Soft sheathing at a valley, chimney or eave is usually accompanied by damp insulation or a stained ceiling below. Neither is roofing work and neither is in these figures.
- Disposal grows. Stripped decking is bulky. A roof that needs most of its deck replaced can push a job past the dumpster allowance already carried in the model.
- The day gets longer. An opened deck must be closed before weather. Crews will either extend the day or tarp overnight, and rushed re-decking is where fastener spacing quietly stops matching the shingle warranty.
- Framing is a different trade. If the rafters below are compromised the job stops being roofing and becomes structural carpentry — see the exclusions below.
Sheathing work versus a full re-roof
How this sits against the job it usually arrives inside.
Sheathing is almost never its own project. It is discovered during a tear-off, priced as a variation, and settled in a conversation on the driveway — which is exactly why homeowners get caught. The parent page, full roof replacement cost, models the job this sits inside, including tear-off, underlayment, the new covering, flashing, permits and the contingency this variation is supposed to come out of. Three quotes can be three different jobs, and decking is the single most common place the three differ: one bidder carries a decking allowance, one excludes it entirely, one prices a per-sheet rate that only appears on page two. Read the allowance before you read the total.
Assumptions, exclusions and confidence
The honest boundary of this page: what the model computes, and what it deliberately does not.
What is modelled
- Panels fixed to sound rafters or trusses, replaced in full-sheet units of 4 × 8 ft.
- Carpenter labour at the local measured wage, with the panel, waste and a delivery allowance.
- The work sitting inside a re-roof, so tear-off, underlayment and covering are already open.
- Contractor overhead, profit and contingency at the same rates as the whole-job model.
What is not modelled
- Rafter, truss, ridge or beam replacement — structural carpentry, usually engineered.
- Interior damage: insulation, drywall, staining or mould remediation below the deck.
- Standalone decking replacement with no re-roof, which carries its own access and weather protection.
- Plank-to-panel conversion across a whole roof, which is a re-sheathing job rather than a repair.
Confidence on sheathing is inherently lower than on the rest of a roof, because the quantity is unknown until the roof is open — the model widens its spread rather than pretending otherwise. The reference run scores 100/100 — high confidence — because the property is generic rather than yours. Answering the planner's questions about your own roof is what moves that score. How the confidence score works · Methodology.
Related roof costs
Adjacent roof questions Renolume models today.
- Full roof replacement cost — the whole-job parent page for every roof scope.
- Roof replacement cost by size — Every common roof area from 800 to 3,000 sq ft, plus the footprint-to-roof-area conversion.
Questions homeowners ask
How much do roofers charge to replace plywood on a roof?
Renolume models one replaced 4 × 8 ft sheet of roof sheathing at $50 – $121 installed, a mid point of $76 per sheet, or $1.57 – $3.79 per sq ft of decking. That is an installed figure: it is the difference between the same roof modelled with no sheathing replaced and with every sheet replaced, so it carries labour, the panel itself, waste and delivery allowance, and its share of contractor overhead and contingency. Charges quoted as "per sheet plus labour" usually land higher once the crew time to strip, cut in and re-nail around the opening is counted.
How much sheathing usually needs replacing on a re-roof?
Most re-roofs replace a modest share of the deck rather than all of it. At 10% of the deck — 6 sheets on a 1,800 sq ft roof — the model adds $700 – $1,000 to the job. At 20% it adds $900 – $1,500. A roof where every sheet has to come off adds $2,800 – $6,800, which is the difference between a normal contingency and a genuine second decision. The share is the number to argue about, not the rate.
How is the per-sheet cost split between labour and materials?
On the modelled sheet, carpenter labour is 31.3% of the direct cost and the panel, its waste and the delivery allowance are 68.7%. The model allows roughly 0.45 crew hours per sheet to cut the damaged section back to the rafters, match panel thickness, re-nail to code and keep the opening weather-tight. Sheet goods are a commodity priced within a few dollars nationally, so the material side of a quote is the part you can check quickly — the labour side is where local wages and crew productivity show up.
Should I accept a mid-job change order for roof decking?
A change order for decking is normal — the deck is not visible until the old roofing is off. What should not be normal is an open-ended one. Ask for the per-sheet rate in writing before the tear-off starts, ask how the count will be evidenced (photographs of each replaced section is standard practice), and compare the rate against the $50 – $121 band above. Renolume's planner lets you set an expected replacement share up front so the allowance is in your budget before anyone is on the roof.
What if the rafters underneath are damaged too?
Sheathing and framing are different jobs. Renolume models sheathing replacement — panels fixed to sound rafters. If the rafters, trusses or ridge are compromised, that is structural carpentry, it usually needs an engineer's input and often a permit revision, and this page does not price it. Renolume will tell you that it does not model something rather than produce a confident-looking number for it.
Is replacing roof sheathing a DIY job?
Realistically, no. It is work at height on a surface that is by definition unsound, it is structural, and it has to be closed in and weather-tight the same day. The engine flags it as contractor-only for that reason. The homeowner's job here is not to do the work — it is to know the per-sheet rate and the likely share before the conversation starts.
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Planning estimate only. This is not a quote, bid or appraisal. Ranges reflect typical market conditions for the stated data version and do not account for site-specific concealed conditions, local code interpretation or contractor availability. Always obtain written bids. Data version v2026.1. Last updated . Methodology.