Shingle roofs are installed every day over wood decking that has been wet by rain.
Roofing in the rain wet wood.
A wet installation can also cause a new roof to fail.
The wood needs to remain damp and wet all the time for wood rot to advance.
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.
Having wet sheathing covered with tarpaper or membrane will trap the water in the sheathing very bad practice and contrary to industry standardss for roofing.
Wet or rain soaked framing lumber will not rot in a matter of days.
If the felt.
Homeowners often worry that the wood is ruined if a house gets wet during construction.
But wood rot is a slow process where the fungi start to grow and feed on the cellulose in the wood.
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.
Generally plywood roof decking that has gotten wet and had the shingles applied over it if allowed to dry.
The decking sheathing should have been tarped and work stopped as soon as it was evident enough rain was going to fall to wet the wood or water barrier felt.
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.
Shingles and roofing materials may not adhere properly to slick surfaces with high humidity.
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.