Roof Replacement Walkthrough
This is the whole project as estimators actually run it — each step feeds the next, and the right tool is embedded exactly where you need it.
Step 1: True roof area
Footprint × pitch multiplier + overhangs. roof square footage estimate tool.
Step 2: Pitch check
Rise over 12; sets multiplier, safety and material choice. roof pitch estimate tool.
Step 3: Squares & shingles
3 bundles per square, +10–15% waste for hips/valleys. shingle estimate tool.
Step 4: Or go metal
Panels by coverage width; 40–70 yr horizon. metal roofing estimate tool.
Step 5: Gutters while staged
Eave length, downspout every 30–40 ft. gutter calculator.
Step 6: Full budget
Tear-off layers + material grade at 2026 rates. roofing cost estimate tool.
Done? Compare approaches on the materials comparison pages, check your state's pricing, or dive into the engineer's field guide.
Reviewed: · methodology.