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Question DetailsAsked on 8/24/2016

Is it okay to replace residential roof while it's pooring down rain

My roof was replaced on my home during a heavy rainfall that lasted several hours.

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1 Answer


No - very bad practice, because it traps water under the roofing, and with shingle roofs in between the shingles as well. As soon as it started raining enough to really wet things (as opposed to just a mist) they should have tarped it. If bare wood sheathing was exposed (water barrier not in place yet) they should have immediately tarped the roof as soon as it started showering enough to dampen the wood - so anything more than just "spits and spatters" of sprinkling.

NOte - this was for a reroof - in the case of local repairs, doing it in the rain to prevent more water infiltration under the roof makes sense- it is already wet and you are trying to prevent more damagve. But on new roofing, it should be dry materials - both to avoid trapping water and promoting mold/algae growth or sheathing delamination or rot, and also because tarpaper water barrier stretches and wrinkles when wetted, so can cause wrinkles and waves in the finished shingles (primarily with asphalt/composition shingles).

Answered 4 years ago by LCD

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