05:01AM | 06/03/03
Member Since: 06/02/03
14 lifetime posts
I'm not sure if this is more appropriate to the paint forum or the windows forum. I'm wondering if I should try a different paint. I am having problems with the brick moulds around some of my windows. Somehow, excess moisture is getting in at the bottom corners. I've checked everything I can think of. I've caulked, I've looked for weep holes I may have covered, you name it. Plus, it's only the windows I've repainted on the northern exposure. The one remaining set of windows on the northern exposure,
as well as the other windows on the house, are doing just fine. The repainted windows were fine before being repainted. The problem only occurs when it rains; I know the problem isn't from moisture in the house. The only other thing I can think of is the paint. I used an exterior latex primer/sealer and a latex topcoat. I put two coats of this primer on bare wood, and at least two coats of topcoat. I used Behr Premium Plus and the recommended Behr primer. Is it possible it can be letting all of this moisture in, or just not letting moisture out fast enough? I'm not having problems anywhere else I've used this paint. Also, the windows are double-hung, wooden windows, with a plastic guide in the window jambs. The windows themselves are fine. It's just the brick mould and a piece between it and the plastic guide. There's one other thing. Inside the house, adjacent to the bottom corner having the most problems, there is a vertical crack in the drywall below the window sill and apron. I pulled the apron out to check for problems, but didn't see any. I'm assuming it's due to the excess outer moisture.

Any helpful suggestions are appreciated. Thanks.


12:44PM | 06/03/03
Member Since: 07/28/02
1356 lifetime posts
I doubt the problem is coming from moisture getting in through the paint film as it is desgined not to let liquid moisture in but to let moisture vapor out. But if there is alot of moisture coming out of your house it could cause this type of problem and even though your house seems dry it could have gallons of moisture going out through the walls of your house. Also alot of windows today are made with some of the cheapest wood known and the primer that comes on them is not any better. If the brick mold is finger jonted as alot are, be sure there are not any spots were they have seperated and are letting moisture in, and you can fill these spots in with caulk before you paint.
When and if you need to replace the brick mold be sure to use the PVC type and not the wood. These hold paint well and will not rot.

You were right in using latex products as most preprimed windows are not desgined to have oil based products of any kind applied to them as it lift the primer.

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