Use this water-damaged sheathing repair cost calculator to estimate a planning range for rotted, soft, swollen, mold-stained, or water-damaged sheathing behind siding, under roofing, at gable ends, or around floor/subfloor areas.
This is not a contractor bid. Water-damaged sheathing repairs change quickly if the leak source is not fixed, framing is damaged, mold cleanup is needed, or siding, roofing, WRB, flashing, trim, or finish materials must be rebuilt.
Estimate water-damaged sheathing repair cost
How this estimate works
The calculator estimates replacement sheets with repair waste, then adds material, labor, covering removal, water-source correction, rot or mold risk, framing allowance, access, and regional cost adjustment.
Repair the water source first
Replacing damaged sheathing without fixing the leak, flashing failure, roof edge, siding detail, gutter issue, or drainage problem usually means the damage can come back.