To determine the total amount of cartons of BMI Shakes that you will require; calculation of waste is required. Waste from the cutting of shingles will vary depending on the style of the roof. If it is a hip/cottage style there will be more waste than a gable style roof.

Note: 

When calculating the number of screws needed for the Bayview Roofing Collection,  Shake and Diamond shingle 250 screws per square or 125 per ctn

Slate Shingle 150  screws per square or 75 per ctn

Calculations can be done then rounded up to the next 1000 as jars of screws are 1000 per jar. 

Roof Area Calculator

Fill out the form below to calculate how much product you need.

# Length (in feet) Width (in feet) Pitch (in feet) Total Area (Sq. Ft.)
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Total Roof Area (Sq. Ft.)
Total Number of Cartons Required