measure your roof 4

https://roofpitchfactorpro.solsticebrief.com/posts/understanding-roof-pitch-factor-for-accurate-material-takeoffs

Measure your roof carefully before buying materials; grab a tape measure, a notebook, and a ladder on a calm day. Walk along the edge and note the width and length of each section, multiplying for square footage. Don't forget to include the slope by measuring from the peak to the eave, then factor in the pitch with a simple pitch gauge or an online calculator. Account for overlaps in shingles or panels by adding 10–15% extra, and double-check tricky spots like valleys or dormers where waste add…