Roofing In The Rain Wet Wood

The above article mentions that the shingles won t adhere properly if the wood or water barrier is wet when the roofing is applied.

Roofing in the rain wet wood.

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. 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. A wet installation can also cause a new roof to fail. 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.

Shingle roofs are installed every day over wood decking that has been wet by rain. Wet or rain soaked framing lumber will not rot in a matter of days. Shingles and roofing materials may not adhere properly to slick surfaces with high humidity. The wood needs to remain damp and wet all the time for wood rot to advance.

Water can cause problems if the lumber is allowed to stay wet for weeks and weeks so do whatever is possible to get a roof on the house. 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. 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. If the felt or liner of your roof gets wet and shingles are installed on top of it then moisture will get.

Generally plywood roof decking that has gotten wet and had the shingles applied over it if allowed to dry. But wood rot is a slow process where the fungi start to grow and feed on the cellulose in the wood.