Measure first.
Plan with confidence.

Measure horizontal plan area by roof plane, apply the matching pitch factor, and document every overhang, opening, and transition.
Reviewed 2026-08-18 · 8 min read

Choose waste from the roof and product details; do not use one percentage to hide missing measurements or accessories.
Reviewed 2026-08-18 · 8 min read

Break the roof into non-overlapping named planes, calculate each slope separately, and keep ridge, hip, eave, rake, valley, and penetration quantities outside the area total.
Reviewed 2026-08-18 · 8 min read

Use product-specific installed coverage for field materials, then measure every lineal accessory on its own row and round at the sold unit.
Reviewed 2026-08-18 · 7 min read