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-   -   Glue together floating floor, bouncy from un level subfloor (http://www.diychatroom.com/f5/glue-together-floating-floor-bouncy-un-level-subfloor-179553/)

palabalo 05-14-2013 10:56 AM

Glue together floating floor, bouncy from un level subfloor
 
I installed an engineered wood floor, glue together tongue and groove, I leveled the sub base but missed a few spots. Primarily a spot that we replaced the 3/4 inch sub floor with 22/32inch I thought the slight difference wouldn't matter, but it does.

This creates a little bouncy area where you can feel the floating floor flex from level to touching the subfloor then back to level.

I have access to the sub floor below (laundry room unfinished).

The thought is to drill a small hole from the bottom (or multiple) and inject something, glue, sand, silly putty? something. to level out the sub floor in the areas I need.


Anyone done this or have any advice?

MJ Force 05-14-2013 11:28 AM

I wonder if construction adhesive injected using a chaulking gun would work? A 4" square pattern/grid of holes could be carefully drilled. How large is the area?

palabalo 05-14-2013 11:49 AM

Most of the 4x8 board

MJ Force 05-14-2013 12:10 PM

Quote:

Originally Posted by palabalo
Most of the 4x8 board

So one sheet of ply. That's not too bad.

If you choose the injection method stay off that area for a few days until the glue cures. I'm concerned about the movement afterwards on the floating floor. Is this in a small area/room? 100-200 sq ft. Might be ok.

palabalo 05-14-2013 12:56 PM

Total area connected 400 sq ft,

but the shape is a bit odd, kitchen to living room to hall all connected. I feel like there is room for the wood to expand on both sides of the "glued area"

What type of caulk would you use?

MJ Force 05-14-2013 01:08 PM

Quote:

Originally Posted by palabalo
Total area connected 400 sq

What type of caulk would you use?

Not chaulking. A good construction adhesive will flow into those holes and then puddle in the void. Don't pump in too much. You want to create a small pad of glue about the size of a quarter. That way it will cure quickly. Use at least a 4" grid pattern of holes. Of course try to avoid drilling into the underside of the new flooring.

MJ Force 05-14-2013 01:12 PM

Ps; construction adhesive comes in a tube. PL-xxx. (400?) or PL-premium construction. You use a chaulking gun to pump it. Then it dries hard.

palabalo 05-14-2013 01:15 PM

Well I think I am going to try this out, seems reasonable what can go wrong :-)

I am going to wait a bit to see if someone has a better thought but I think this is what I am going with.

MJ Force 05-14-2013 01:18 PM

I've never had to do this but it sounds like a remedy that just may work.

MJ Force 05-14-2013 01:22 PM

Maybe try a few test holes first to see if there's any results. After that, if it works, complete the rest of the holes.


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