I recently bought my first house and I noticed some rot happening beside our garage door. It appears that when the cement driveway was poured, they got too close to the siding and now water is wicking up into the wood. I figure I can cut back the siding and replace it but how do I stop this from happening again?
Leave a gap between the concrete and the siding, so that the water can run away/evaporate before it reaches the wood. Also make sure that the water flows away from the siding when it rains, and not up against it.
There should be a small slope away from the siding, so the water is not retained there, but leads away to avoid further damage to the siding/construction.
In Norway where I live, all houses have a clearing of 2-3 cm at least between the concrete and wood, and the floor is made so the water runs away from the building to avoid exactly this issue, because of the amount of rain and sometimes melted snow during the seasons. It’s part of the building code for houses.
Best of luck to you in getting this sorted out, make sure you get all the damaged parts out, so you avoid secret problems later on.
geekworking@lemmy.world 11 months ago
Once it’s rotted, you need to replace. This will also give you the opportunity to look at the wood behind the siding as there’s a good chance that the rot goes deeper.
You never want to have untreated wood touching concrete. Concrete will always wick water and rot the wood. When you replace the siding, leave a 3/8in gap between the wood and concrete. Seal the gap with caulk to keep water out.
lemming741@lemmy.world 11 months ago
I agree, just be careful with the caulk- sometimes you end up sealing liquid (or vapor) water IN instead of out. If you have good overhangs it’s probably fine but don’t do this below a window or other opening.
And for anyone wondering about concrete wicking water, look up ‘capillary break’
Debs@lemmy.zip 11 months ago
I was worried about sealing in water/moisture. I think I’m going to leave it until the rainy season is over and then open it up to see what is behind there. Hopefully the structure is ok.