Preventing water from seeping under wall
harrisdog43
| Posted in General Discussion on
Problem: patio converted into extra room in which the roofline covered the patio. They used T-111 as siding, layed a 2×4 flat for the plate and filled in. Water is moving under the wall when it rains. Prior repair work was to use silicone caulk to stop it but that is not working now. I propose to take a galvanized drip edge and screw it to the T-111 with NP-1 caulk beneath and behind it. $$ prevent the HO from extensive repair work. Very little rot was found and just a little stain on the cedar panels inside.
What do you think?
john
Replies
I gather that the bottom plate is sitting on the patio slab, and there is a bit of the patio slab extending out beyond the wall, the result being that water collects on this bit of patio slab and runs back under the wall. Is this correct?
In a similar situation (a front stoop up against the house) I cleaned the slab surface real well and made a fillet of thinset tile mortar with a triangular cross-section about 1" by 1" up against the wall. It's been in place 11 years now and still sound. In my case I replaced the sheathing in the area with cement board, but this probably isn't necessary.
You are correct in your assumption that the slab extends beyond the wall a couple of inches. I should have said that in the original post. I understand your triangle method. Using the dripedge seems to me like it would accomplish the same thing. The price on that stuff is very appealing too. I used it two years ago while painting a house where there was a gap between the soffit and the siding that was too big for caulk which the previous painter had used. I would probably use backer rod in that instance today.