I pulled a portion of one course of felt back and the osb was damp.
Pur roof over wet felt.
Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe.
It was drizzling and osb was exposed for about a half hour.
Is it safe to put felt paper over wet wood when building a wall with stone facade.
Why is a synthetic felt paper or underlayment superior.
Does felt paper have to be used under asphalt shingles.
Roofing felt is used as a base over wood rafters and then shingles are laid upon it.
The national roofing contractors association nrca includes roofing felt in its recommendations for roofing and waterproofing.
Is it ok for a roof contractor to lay paper tar nd shingles on a damp roof.
This moisture can lead to mold and mildew forming underneath the shingles.
Then it rained again.
Roof replacement is expensive.
Roofing felt is most often used as an underlayment or layer between the roof deck and shingles tiles or metal panels on roofs with steep slopes.
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.
Have had a flat roofer turn up to do a repair and refelt a roof the long and short is even though he has quoted to replace some boards if needed i know a couple were soaking wet as can see from inside my flat where ceiling fell in he never even tried just nailed new boards on top and refelted those then on the concrete sides he has not removed old felt just gone straight over the top so.
I leave roofs under ice water shield 30 felt for 2 3 days at a time with no problems been doing this for 25 yrs.
This shortens the effective life of the shingles and can adversely affect the roof sheathing.
High winds can push water or snow up the roof and under shingles or tiles.
Here are some things you may be wondering about roofing felt.
Is it ok to install a new roof while its raining.
A steep roof is 4 12 or greater meaning that the roof rises four feet for every 12 feet of length.
Building codes also commonly require this material as a layer between the roof deck and shingles.
A good thick organic felt paper like 30 can get some pretty hefty wrinkles if it gets rained on.
The felt got wet and let water seep through it to the osb.
Roofing felt applied over a wet roof deck or shingles applied over wet roofing felt traps a layer of moisture within the roof.
If you have competent experienced roofers working on your roof you have nothing to worry about let them do their job.
An experienced roofer can dry in a roof so that it won t leak from a simple rain.
Because after letting the osb dry i laid the felt and installed half the shingles on the upper roof.
