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Old 08-12-2013, 10:55 PM   #1
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spray coating window sill with rubber


Are there any downsides to spraying an exterior window sill with flexible rubber coating to protect against moisture/rotting. Would fill in cracks and splits nicely I would think.

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Old 08-13-2013, 08:54 AM   #2
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spray coating window sill with rubber


Not a great plan. Going to look like poop, paint will not stick, not going to address the real issue.
Got a picture you can post to see how bad it is?

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Old 08-13-2013, 02:05 PM   #3
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spray coating window sill with rubber


If it cracks and water seeps in you will be worse off. Usually the major damage comes from sills not being the right angle or deep enough. Most often it is the flashing around windows and under the sills (or lack thereof) that leads to the most damage.
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Old 08-13-2013, 11:20 PM   #4
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spray coating window sill with rubber


But Joe,
it works great for turning your pickup truck into a boat. I saw it on tv, must work.
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Old 08-14-2013, 12:31 AM   #5
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spray coating window sill with rubber


And it's so much fun to try and get shingles off once someone has sprayed a case of it all over a roof to save money.
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Old 08-15-2013, 06:24 PM   #6
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spray coating window sill with rubber


The wood will not "breathe"; Water will get in thru some crack that will eventually develop and can't easily evaporate [water as vapor is a LOT more volume than the liquid version], so humidity will accumulate under that rubber skin. When the moisture content of the wood reaches about 25% the fungal spores that are everywhere will hatch and the little critters will eat your wood with great enthusiasm.
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Old 08-15-2013, 11:57 PM   #7
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spray coating window sill with rubber


IMO, use a water proof wood sealer first to protect the wood; http://homeguides.sfgate.com/keep-wo...ing-27167.html

Other tips; http://www.paintsource.net/pages/sol...d_surfaces.htm

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Old 08-16-2013, 02:04 AM   #8
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spray coating window sill with rubber


I suddenly realize a troll trend. I should have looked more carefully. The OP is a one time troll, and will not be back.

That said, it was not a question beyond comment.

I personally do not think you can fix sill problems by just coating them over. I think it all starts at the roofing, then you look at gutters, and then you look to make sure your sills are cut at enough of an angle to repel water.

And of course everything along the path of water needs to be properly flashed to move along faster. Roof, windows or whatever. And the gutters will not work if not clean.

You cannot fix problems or address window sill issues talking only about what coatings to put on them.

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