REPLACEMENT & TEAR-OFF ESTIMATOR
Roof Replacement Cost Calculator
Calculate detailed itemized roof replacement costs including labor tear-off, disposal fees, decking repair allowances, and new roof installation.
Roof Replacement Cost Calculator
Calculate complete roof tear-off, decking replacement, underlayment, and new roof installation costs.
sq ft
sheets
Average roof replacement replaces 2–4 rotted plywood/OSB sheets ($65–$110 each installed).
Roof Replacement Cost Formula
$$text{Total Replacement} = text{New Roof Installation} + (text{Area} times text{Tear-Off Layers} times text{Rate}) + (text{Decking Sheets} times text{Sheet Price})$$
Replacing an existing roof involves removing old shingles ($1.00–$2.00/sq ft per layer), replacing water-damaged plywood/OSB sheathing ($65–$110/sheet), and installing new synthetic underlayment and shingles.