Replies

1. 
   Jim_Allen | Sep 23, 2008 02:33am | #1

   shameless bump.

   I need some wood flooring guys to help me out here with some information about moisture control.

2. 
   Dinosaur | Sep 23, 2008 04:10am | #2

   I'll bump ya one more time.

   I dunno the answer to your question, Jim; I don't think I've ever laid a wood floor directly on a slab. Closest I've ever gone is to use those new osb 'tiles' with plastic bumps on the bottom to keep 'em ¼" up off the concrete.

   Dinosaur

   How now, Mighty Sauron, that thou art not brought
   low by this? For thine evil pales before that which
   foolish men call Justice....
   

   

3. 
   MikeSmith | Sep 23, 2008 04:26am | #3

   we did the glue down wood on that RFH ranch

    

   it was a Mannington floor & glue system..... i think it was about 1000 sf....about 9 months later we had 1 board pop... guy cut it out & reglued it

   this is on a radiant slab.... i was impressed with the product

   Mike Hussein Smith Rhode Island : Design / Build / Repair / Restore
4. 
   DougU | Sep 23, 2008 04:38am | #4

   Jim

   I spent 3 1/2 years down there in Austin and while there I was around for maybe 6 or 7 floors glued to the slab, didnt have any problems with any of them but as I said, I was only there for 3 1/2 years!

   I dont know how you'd tell if you had a problem unless you actually had one, then I'd suppose you'd see it?!

   Is this something that your planning on doing or subbing out? The sub would have to stand behind it, right?

   I know this is no help but the bump is free.

   Doug

    

1. 
   Jim_Allen | Sep 23, 2008 06:05am | #5

   We laid a floor. The sub didn't do stellar work. They brought in a certified flooring guy. He tests for moisture and says there slightly more moisture than is allowed. The floor was laid with Mapei, which supposedly seals the slab, which really wasn't damp anyways and is fairly new. I'd bet my last nickel that is has a moisture barrier under it. So, I'm trying to figure out how I'm supposed to smear this glue down, get the boards laid before it sets, and know that it's doing its job as a moisture barrier. Don't ask me....I don't have a clue. I might have to lift the entire floor and start over.

1. 
   Hiker | Sep 23, 2008 07:23pm | #7

   How new was the slab?  and how low is the top of slab to grade?

   Bruce

1. 
   Jim_Allen | Sep 24, 2008 04:39am | #9

   It's a somewhat new house. Maybe 8 years old.

5. 
   Hiker | Sep 23, 2008 07:22pm | #6

   Jim,

   Bostik has a vapor barrier product that gets troweled on and then you use your Bostik adhesive for glueing the floor down after the vapor barrier is dry. 

   Best of luck,

   Bruce

1. 
   Jim_Allen | Sep 24, 2008 04:38am | #8

   I'm going to do the Bostik thing in the future.The slab is actually elevated about 18' above grade. The house is well graded. I'm really baffled that there is a moisture problem but I haven't verified it for myself yet. It might be a ruse.