roof pitch factor 6

https://wiki-velo.win/index.php/How_to_Calculate_Roof_Square_Footage_for_Accurate_Material_Estimates

The roof pitch factor is a multiplier used to adjust measurements when calculating the actual surface area of a sloped roof, accounting for the added material needed due to its angle. For example, a steeper pitch like a 6/12 slope has a factor around 1.12, meaning you'd need roughly 12% more shingles than the flat footprint suggests. It's a practical tool, not a technical formula, and helps homeowners and builders avoid underestimating supplies.