How long can 30 lb felt be exposed?
Besides, how long can 30 felt be exposed?
Supposedly, synthetic felt can be left exposed for something like 90 days and is more tear resistant than paper felt. It is lighter and comes in larger widths, too, so it is easier to handle.
Secondly, is it OK for roofing felt to get wet? Roofing felt can get wet and still maintain its integrity, as long as it is not exposed to the elements for more than a few days. It will break down in sunlight and with large amounts of ongoing moisture. If the felt is still wet, it may rip when shingles are installed.
One may also ask, how long can synthetic underlayment be exposed?
How long can peel and stick roofing be exposed?
One of the most valuable qualities of the improved self-adhesive membranes is that they can be exposed to the elements for up to 180 days without damage to the membrane or the substructure.