eTools Shingles Roofing

Shingles Formula

A roof is a building's most important layer of defense against water, wind, and sun.

Roof Square Ft Divided by 30 = Bundles you will have to buy.

Average Shingle Bundle Bag is in 30 SQFT. You will need 3 Bags to cover 100 Square ft

Calculator Inputs

Roof Square Ft.:
Add 8% to 10% as waste

Calculator Results: Number of bags needed:  

Important Disclaimer: This calculator is provided for general information and illustration purposes only; the results are to be used only as estimates and are not intended as definitive advice or as a resource applicable to any specific circumstance and should not be relied upon or used as such.