Can roofing felt get wet.
Plywood sheathing roof wet in winter.
15 and 30 felts will breathe.
With the shingles on it sill still breathe.
When the air underneath circulates it will dry.
Use heat wet lumber will.
Use a dehumidifier 4.
Pt goes a long time don t know the end points.
Either the attic gets treated as a warm space or a cold space most opt for a cold space.
I would take the existing insulation and put that off to the side install new insulation with vapor barrier in existing joists then the old insulation on top if in good shape for more r value try to hit or exceed r30 i would had more ventilation to the attic either by cutting in a second gable vent.
The minimum plywood for roofing.
Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance.
The underside will breathe.
When the sun shines it dries.
Here are the four main ways you get wet framing lumber to dry.
Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.
Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for.
And in case you re wondering yes the i joists holding up the subfloor also got wet primarily the plywood caps not so much the osb ribs.
Soaking wet roof decking osb roof sheathing gets rained on all the time up here and roofs are the first cover to go on a framed structure.
The osb and in fact any wood panels must be allowed to dry completely depending on how wet the panels are this could be a few days before any roofing material is applied to avoid trapping moisture under the roof material that could cause edge swell and buckling.
We apply our own water proofing thompson s or california for untreated sheathing that has lengthy exposure periods during construction but there are some expensive poducts you can buy if.
It is never a good idea to install a roof over wet plywood or any type of roof sheathing.
If you live in an especially rainy or humid climate consider using plywood sheathing instead of osb.
Trapped water will boil when the sun heats the roof and the shingles will then have small pits where.
Rafters run from the peak of the roof.
Untreated plywood maybe a few rains on the 5 8.
Although plywood is usually more expensive than osb plywood is more resistant to moisture damage.
It adds proven performance and durability to new homes room additions and renovations.
