Roofing measurement guides
Plain-English explanations of the numbers roofers use to quote and order materials.
What is a roofing square?
Why roofers price by the square, and how to convert any roof area to squares and bundles.
Read →How to measure a roof
Three methods — on the roof, from the ground and from aerial imagery — with the math.
Read →Roof pitch explained
What 4/12 means, how to convert pitch to degrees and why pitch changes roof area.
Read →Roofing waste factor
How much extra material to order for gable, hip and complex roofs.
Read →What’s in a roof measurement report
Every line of a roof report explained, from squares to valleys.
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