how to measure a roof 17

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To measure a roof, start by drawing a simple sketch of its shape, breaking it into rectangles and triangles. Climb up safely with a tape measure and note the length and width of each section, measuring along the roof surface. For a gable roof, measure from ridge to eave and multiply by the total length; for flat roofs, just get length and width. Add 10-15% for waste and overlap, especially with shingles or tiles.