Roofing Material Help

This calculator uses the following formulas:

Shingle Squares = Area / 100
Shingle Bundles = Squares * 3
Underlayment Rolls = Squares / 4
Pound of Nails = Squares * 2.5

These numbers are for a basic estimate only. Please make sure to check that the materials you use are correct. You most likely will need materials that this calculator does not solve for.