Shop Floor Weeping

cedarwillySeptember 8, 2008

If I set something on the concrete overnight the concrete is wet in the morning. The shop is 8 years old. I finally cleaned it out this weekend and am going to try and seal the concrete floor. Any ideas on what to use and how to apply it?

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davidandkasie

i know this is late coming, but i would use a garage floor paint. even then it may do it. around here this is a very common issue as we have high ground water and high humidity. sometimes paint/sealer works, sometimes it does not.

    Bookmark   September 15, 2008 at 12:53PM
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tcgoff

I've heard that the sealants won't stick if your floor is wet. Which sounds like yours is.

    Bookmark   October 5, 2008 at 4:20PM
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heimert

Do a test by putting down a sheet of plastic over the concrete, held down by duct tape.

It's possible the moisture is condensation from the air, not weeping from the ground.

    Bookmark   October 8, 2008 at 1:54PM
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garageandbeyond

You must have a high water table or your moisture barrier has failed. Maybe your shop is very old and doesnt have a moisture barrier. Paint surely will peel of quick. In your case even the best epoxy or polyaspartic system would fail. You need to waterproof it first with a vapor emissions primer, then apply an industrial coating system. Any industrial flooring company should have access to this type of formula. Expect to pay a good price though. A complete system in your case could rum from $10-$15 per sqft.

    Bookmark   October 26, 2008 at 10:43PM
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mainah1945

Check around the perimiter of you shop and make sure the ground is sloping away from the slab. Quite a few hundred gallons of water can fall from that roof and seep under the slab. You might have to ditch around the shop and install perforated plastic pipe to dirct the water away. Or install gutters and downspouts directing the water away. If you don't get rid of the water problem you will be wasting your money on coatings as they will probably just peel up. Good luck, Mainah.

    Bookmark   October 28, 2008 at 9:42PM
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