Roofing Cost Estimator
Turn a roof replacement idea into a scope that separates roof planes, tear-off, weather protection, flashing, ventilation, and possible decking work.
Roof replacement planning starts above the ceiling
A roofing estimate should describe roof planes and the weatherproofing system, not only the home's living area. Roof area, pitch, stories, valleys, penetrations, access, and the number of existing layers all affect the work.
Cost drivers to carry separately
- Measure roof planes or use a verified roof measurement; do not infer roof area from conditioned floor area.
- Separate tear-off and disposal, underlayment, ice or water protection where applicable, flashing, vents, ridge work, and new covering.
- Include a decking replacement allowance without presenting hidden sheathing as a known quantity.
- Note chimney, skylight, dormer, valley, steep-pitch, staging, and multi-story access conditions.
Budget assumptions and safety
A planning range cannot confirm leaks, framing damage, ventilation performance, or permit requirements. Do not climb an unsafe or steep roof to measure it; use a qualified roofer or inspector. Final scope should verify flashing, ventilation, deck condition, disposal, and weather protection.
Access: Start with a free preliminary range—no account or payment required. Membership adds saved projects, detailed labor and material lines, regional adjustments, exports, and reports; see current plans. No Ads Ever: supplier information is not sponsored and does not influence results.