calculate roof square footage 3

https://wiki-planet.win/index.php/How_a_Roof_Pitch_Calculator_Saves_Time_and_Prevents_Costly_Mistakes

To calculate roof square footage, start by measuring the length and width of each roof section, including slopes. Multiply these to get the area, then add 10-15% for waste and overlaps. For complex roofs, break them into simple shapes like rectangles or triangles.