roof pitch factor 21

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The roof pitch factor is a multiplier used in roofing calculations to adjust measurements for the slope of a roof. Instead of measuring flat horizontal area, you multiply the square footage of your home's footprint by this factor to get the actual surface area of the roof. This matters because steeper roofs require more materials like shingles and underlayment. For example, a 6/12 pitch has a factor around 1.12, meaning you need 12% more material than a flat roof. Knowing your pitch factor help…