Is It Ok If Roof Felt Gets Wet

Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained.

Is it ok if roof felt gets wet.

The felt can be damaged if exposed to moisture too long. Roofing felt that has gotten wet can be covered with shingles as long as it is allowed to dry out first the surface underneath did not get wet and it did not wrinkle bubble or rip. This moisture can lead to mold and mildew forming underneath the shingles. So yes roofing underlayment can get wet.

However when the rainy season is here we make sure to work quickly efficiently and safely. Waterproof roofing felt gives the roof temporary protection from rain while you apply shingles tiles or other roof coverings. Roof replacement is expensive. The felt collects and then repels the water allowing the roof to breathe.

I ve tried covering the roof to protect from rain with plastic or. When the felt gets wet it will crinkle up and not lay flat which may not be noticed if you have a thick comp shingle 30 year. Roofing felt applied over a wet roof deck or shingles applied over wet roofing felt traps a layer of moisture within the roof. Doesn t matter at all.

Roofing felt should ideally be dry when shingles are installed to avoid ripping but it s still possible to install when wet. Felt will often get wet with a cedar shake roof since this type of roof is designed to soak up then shed water. The bubbled felt can cause a minor lump on the finished roof depending on what sort of roofing you re using. This shortens the effective life of the shingles and can adversely affect the roof sheathing.

Roofing felt is not designed as a permanent exterior barrier against water. But not for long periods of time. During clear 70 degree days we have more flexibility in our schedule. It is safe to walk on.

That s why planning is so important during a roof installation. Any moisture trapped in the roof will flow down and out.