Summary: A roofing square is a standard industry unit that equals 100 square feet of roof area, used to estimate materials, labor, and total project cost for roof installation or replacement. Roofing contractors calculate squares by measuring each roof section, adding the total square footage, then dividing by 100, so a 20-square roof equals 2,000… Continue reading What is a Square in Roofing? A 2025 Roofing Checklist
