Why do we need roofs on houses? Why can’t we just build it flat on the top?
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I’m going to guess you’ve never lived in Snow Country. Imagine 6+ feet of snow on top of a flat roof. At approx. 20lbs per cubic foot, that’s 120lbs per sqft of roof. Say the house has 1000 sqft of roof (our 3/2 has about 1800 sqft), that would mean your flat roof is holding up 120,000 lbs. That might be a bit past its specified loading capacity.
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