Roofing Waste Percentage Guide

Choose roofing waste percentage for simple gable roofs, hips, valleys, dormers, and complex layouts.

Simple roofs need less waste

A basic gable roof may use a lower waste allowance than a roof with many cuts.

Hips, valleys, dormers, skylights, and small roof planes increase cut waste.

Starter shingles, ridge caps, vents, flashing, and underlayment should be counted separately.

Bundle coverage can vary by product, so confirm bundle-to-square conversion before ordering.

Is 10% roofing waste enough?

It may be enough for simple roofs, but complex roofs often need more.

Do ridge caps count in waste?

Ridge caps are usually estimated separately, not as field-shingle waste.

Can I return extra shingles?

Policies vary, and opened bundles may not be returnable.

Open the calculators and enter your dimensions to estimate materials before you shop.