Roofing Calculator: Estimate Materials and Costs
Understanding Roofing Calculations
What is a Roofing Square?
A roofing square is equal to 100 square feet of roof area. Contractors typically use squares to estimate materials needed for a roofing project.
Roof Pitch Explained
Roof pitch is the vertical rise divided by the horizontal span. A 5/12 pitch means the roof rises 5 inches for every 12 inches of horizontal distance.
Material Wastage
It's recommended to add 10-15% extra material to account for waste, overlaps, and cuts around vents and chimneys.
Professional Installation
While this calculator helps estimate materials, professional roofers should verify measurements and account for specific roof features.