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dcamell 06-03-2013 12:19 PM

Rain between sanding and washing?
Hi; I rented a sander and did my (PT) deck. Unfortunately I ran out of time to get the stain in before we had a day of heavy rain. I'm just wondering/hoping I didn't waste my efforts sanding? Will a day of rain, plus a day to dry out, have a big negative effect on the project? I've already returned the sander, just wondering if it is worth it to (a) re-rent it, or (b) get down with my hand sander to do some/all spots with a light sand.

Jmayspaint 06-03-2013 01:45 PM

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I wouldn't think a few days would make that much difference. Make sure the deck is dry, its hard to tell just by looking/guessing. A simple moisture meter will tell you for sure. You can get them at a lot of paint stores for around $30.

Example, it rained here last night and was cloudy this morning. These logs are under a porch and wouldn't get direct rain, you might assume they are dry. Not really though. 18% is the max for staining, but I like it below 12%

It is best to sand ( and dust/blow off) right before staining IMO . If you have the time and want to be extra cautious, even a light sand will help. I thin its more about sun damage than getting wet/drying, even a few days in the sun will affect the surface.

Jmayspaint 06-03-2013 01:56 PM

Think I sounded a little wishy-washy there.

Better answer is; Yes, for best results re sand, and make sure its dry.
But it probably won't be a disaster if you don't re sand as long as its dry.

dcamell 06-03-2013 01:59 PM

Ha! No, not wishy washy, just detailed! Thanks; that's a neat little device. I will look for one.

ToolSeeker 06-04-2013 07:03 AM

I agree on letting it dry the biggest cause of paint failure is moisture. I don't think a day to dry is enough.

cdaniels 06-04-2013 11:18 AM

Every exterior stain I know calls for 2-3 days drying time after washing or rain.Follow the label directions and you will be fine.

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