🏠
Roofing Calculator
Calculate roofing squares, shingle bundles, underlayment rolls, and material requirements
Roofing Standard: 1 roofing square = $100\text{ sq ft}$. Standard architectural/3-tab shingles require 3 bundles per square. Standard felt underlayment rolls cover approximately 400 sq ft (approx. 4 squares per roll). Includes a 10% waste allowance.
Roof Area & Waste Specifications
Calculation Results
⚠️ Roof slope, valleys, hips, and ridges increase material waste. For complex roofs with multiple gables or dormers, consider using a 15% waste allowance factor.