how to measure a roof 4

https://measureyourroofmarket.brightsora.com/posts/how-to-measure-your-roof-the-right-way-for-accurate-material-estimates

Measuring a roof for replacement or repair starts with safety—use a sturdy ladder and wear slip-resistant shoes. For a simple gable roof, measure the length and width of each rectangular section, then multiply to get square footage. For hips and valleys, break the roof into triangles and trapezoids; use the formula for area of a triangle (base times height divided by 2) for triangular sections. Don't forget to add 10% for waste and overlap on shingles. To find pitch, measure vertical rise over…