This moisture can lead to mold and mildew forming underneath the shingles.
Roofing shingles in the rain.
If the felt or liner of your roof gets wet and shingles are installed on top of it then moisture will get trapped inside.
Shingle granules are less prone to damage shingles are made of asphalt and have small ceramic granules embedded into the asphalt to make them waterproof.
Note that you should never shingle over bare wood like a bird s feathers shingles shed the qwater but are not watertight especially in windblown rain or melting snow conditions.
Shingles that are left exposed to rain and then installed may violate the manufacturer s warranty and may fail early possibly due to the effects of temporarily trapped moisture at the time of application.
But once the underlayment is in place the roof is protected.
You need a water barrier under them like roofing felt old school or a synthetic water barrier or roof shield or roof wrap breathable membrane.
Nails will pop over time.
This shortens the effective life of the shingles and can adversely affect the roof sheathing.
Roof replacement is expensive.
Shingles and roofing materials may not adhere properly to slick surfaces with high humidity.
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.
Roofing in the rain not only means you or your roofing experts will be extremely wet uncomfortable and exposed to more risk but it also means that your new roof could have less integrity than if it were installed in dry conditions.
A wet installation can also cause a new roof to fail.
Roofing during wet weather is just part of the job in the great pacific northwest.
This is not ideal.
If we only performed roof installations during dry weather we d have nothing to do for six months of the year.
For some reason never noticed any problems roofing in the rain frozen decking with staples they seemed to stay in the roof better.
It depends on how much rain and for what duration.
Roofing in the rain.
Walking around on a newly installed roof invariably shakes some of these granules loose.
In the midst of your roof installation joe hall roofing can weatherproof your roof.
While the completed shingles may not be in place during an unpredicted rainstorm there should be a protective layer on your roof that keeps rain from getting in.
Rain effects on asphalt shingles.
If the sheathing or wood is wet during the time of installation it can trap moisture inside of your roof leading to mold rot or other severe problems.
Roofing felt applied over a wet roof deck or shingles applied over wet roofing felt traps a layer of moisture within the roof.
Believe it or not shingles are not quite waterproof and depend on roof slope to shed water effectively.
