Tear-Off Debris Calculator
Estimate roofing debris weight and dumpster size for tear-off projects. Accounts for shingle type, layers, and decking.
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Tear-Off Debris Calculation
Base weight = Squares × lbs per square (by type)
3-tab: 240, architectural: 350, designer: 375
Layers: 1 layer = 1x, 2 layers = 2.1x, 3+ = 3.2x
Overlap adds weight
Decking adds ~25% if replacing
Plywood/OSB removal
Roofing debris weight varies by shingle type. Most dumpsters have 2-3 ton weight limits. A 20-yard dumpster typically handles 25-30 squares of single-layer asphalt. Always confirm with your dumpster provider.
Reference: Prime Dumpster, Riddle Roll Offs
Frequently Asked Questions
3-tab asphalt: 230-250 lbs per square. Architectural: 300-400 lbs. Designer: 350+ lbs. Wood shakes and tile can exceed 800 lbs per square.
10-15 yard for small jobs (up to 15 squares). 20-yard for most residential (25-30 squares single layer). 30-yard for large or multi-layer jobs.