moisture on garage floor

by jim
(ny)

Q. This time of year spring to summer I have moisture beads all over my garage floor on top of epoxy paint. I was told by a mason there is a vapor barrier below slab what can i do?

A. There should be a vapor barrier under the concrete if an epoxy paint is applied to the concrete. Moisture coming up through the slab will blister and peel the epoxy paint off the surface of the concrete. You do not mention this is happening so it sounds like the moisture is forming on the surface of the epoxy, not coming up through it.

There is a lot of moisture in the air this time of year (rain and humidity) a dehumidifier may help your situation.

If moisture vapor is indeed coming up through the concrete and you have a breathable epoxy on your garage floor, the only way to slow the rate of moisture vapor escaping is to remove the epoxy, apply a moisture vapor blocker to the concrete, and re-apply the epoxy to the concrete.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Concrete Floor Questions.


One more way to share everything-about-concrete.com

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.