calculating average R-value of a roof

calculating average R-value of a roof

Postby xcu » Tue Aug 27, 2019 2:41 pm

Assuming a typical symmetrical gable roof, if you had a material at the eaves and a different thickness of the material at a ridge, how do you calculate the average R-value if you are not given a width that this material spans? Do you assume the insulation meats in the middle of each side of the gable?
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