I have a customer who is getting moisture behind their redwood siding, which
is, among other things, rotting out their drip cap and hanging stile (brick molding).
The windows appear to be tightly caulked and painted. Any ideas how the
water is getting in? (The house has a 15-year old cedar shake roof, but there
haven’t been any other signs of moisture damage inside).
Replies
Any siding material can let water through from wind driven rain.
You could also have a sirtuation where moisture is comeing out through the wall depending on how it was built, insulated, and whether vapour barriers are installed correctly.
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Thanks. I'll pass that along.
If the moisture is coming from the inside, what's the fix?
Depends on why it is hapenning.For instance,
Maybe this is a bathrom and they like long hot steam showers three times a day and don't use the vent.orMaybe this is ballon framed and there is a puddle of water in the crawl space that is migrating up an uninsulated wall cavity until it finds a condensation point at the window frame.orThere is no insulation or vapour bar and waterr is migrating everywhere you turn to condense inside the walls.or the roof is unvented and warter is collecting on the inside of the roof shearthing and dripping to run down in the wall near the windowor it is blowing in thru a crack in the siding shortly above the window and running downorThe roof leaks due to missing flashing.So find the source, take a picture to post and return with the information for the solution
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