roof pitch factor 5

https://roofpitchfactorcentral.clearhavendigest.com/posts/understanding-roof-pitch-factor-for-accurate-material-estimates

The roof pitch factor, also the slope multiplier, is a number you use to calculate the actual square footage of a sloped roof for material ordering or area estimation. It accounts for how much steeper a roof is than a flat horizontal plane, adjusting your measurements so you order enough shingles or metal panels without shortage. For example, a common 6/12 pitch, rising six inches per foot, has a factor around 1.12, meaning multiply the home's footprint by roughly 1.12 to get total roof area.