David Morgan thanked KB Baldwin's answer

I believe you normally measure pitch from the roofline  (or the high point of the roof)  to the bottom edge of the roof.  Pitch is just a measure of how far you drop in a foot of distance.  For example a 4 in 12 pitch means that in 12 feet the roof drops 4 feet.  … Read more

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Thank you KB Baldwin!

I honestly thought that you can calculate the surface by applying the Pythagoras's theorem. Meaning - I tried to calculate the surface area by measuring the height at the center of the roof, multiplied with the width, and then I wanted to multiply that result with the width of the area... and … Read more

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David Morgan voted up KB Baldwin's answer

I believe you normally measure pitch from the roofline  (or the high point of the roof)  to the bottom edge of the roof.  Pitch is just a measure of how far you drop in a foot of distance.  For example a 4 in 12 pitch means that in 12 feet the roof drops 4 feet.  … Read more