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Gambrel Roof Calculator
Calculate gambrel roof surface area, squares, and shingle bundles
Roofing Standard: A gambrel roof features two distinct slopes on each side (lower steep slope and upper shallow slope). Add 10% for waste and cutting.
Roof Dimensions & Length
Calculation Results
⚠️ Gambrel roof calculations assume standard symmetrical barn roof geometry. Always verify overhangs and gable ends with your local building plans.