Exterior Paint Directly After Rain Okay?

devon8August 25, 2008

We are getting the exterior of our house painted and we live in Seattle. It's been raining for the last week.

There is supposed to be one clear weather day tomorrow and our exterior painters want to get started on the priming (it's still raining this evening). I'm panicked about them painting so closely after the rain. Everything I have read says that you have to wait 3 days or so for the wood to dry before painting? What happens if they don't wait?

I should note that we had massive paint failure and so removed all of the paint from the lapboards on the bottom of our house. So the wood is completely exposed. On the top, we installed new Hardy shingles.

Thanks so much for any advice you can provide.

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If the wood is wet, don't paint it. The moisture content needs to be under 14 percent which can be checked with a moisture meter. If you paint wet wood, the paint will certainly fail faster than if you painted the wood when it was dry. Painting wet wood will also invalidate the warranty on the paint. What will probably happen is the painters will see that it rained all night and will probably cancel. If they actually show up to paint wet wood then I'd say you hired the wrong guys. I don't really know that there is a 3 day rule, but it's really common sense that all painters should have. They know the sun needs to come out to speed up the drying and that if it is overcast that it will take longer to dry out. They may also show up to caulk, prep or paint areas that didn't get wet....I will do that sometimes as it may be a better option than sitting at home waiting.

    Bookmark   August 26, 2008 at 12:13AM
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For our deck exposed direct 90+ weather in fair or mild humidity dried our paint in 4 hours before a storm giving no drips or messes.

Likewise for 4 hours in more humid 90 or so degree weather, the underside of the deck dripped, especially in the last 40 minute areas we painted.

Even if they get rain, have them take out any vents you have and rinse out the meshwork inside.

Good luck.

    Bookmark   July 14, 2011 at 1:16PM
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