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 Post subject: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Sun Oct 24, 2021 10:11 am 
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Hello all - this is my first post, and I'm a novice, when it comes to flooring installation, so please forgive my ignorance.

I recently installed a 3/8" engineered wood floor -- over a concrete floor (elevated, not on grade) -- as a floating system, on a foam acoustical underlayment. It's a click-together system.

It sounds terrible to walk on - a mix of hollow thumps, and crackling rice crispies.

So, I'm pulling it up, and gluing to the slab with an acoustic adhesive (Sika T21).

My question (and I've done a lot of searching for an answer - but can't find a thing) -- is: Since I can't go back, after the flooring is glued down - can I also glue the tongues/groves of the boards to eliminate noises? I bought a bunch of Titebond tongue and groove glue, in case the answer is yes.

I know that expansion and contraction is the concern, but I'm thinking that the whole floor will expand and contract as a system, if I leave enough gap at the edges?

The rooms are small (10'x14') and the high-traffic areas that I'm most worried about (kitchen and hallway) have very short runs -- boards that are only 4' long (running perpindicular to the space).

Any advice is greatly appreciated.


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 Post subject: Re: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Sun Oct 24, 2021 3:25 pm 
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Did you follow the directions concerning getting the floor flat?


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 Post subject: Re: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Sun Oct 24, 2021 6:29 pm 
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Hi Pete -- thanks for the reply. Yes, the floor is very flat. It has a layer of self-leveling ardex, on top of the pre-cast concrete planks.


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 Post subject: Re: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Sun Oct 24, 2021 8:38 pm 
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Three eighths inch is thin for a clic-loc floor. Does it have a special core.
You ought not to need glue to hold it together since it is clic loc.
If you glue the floor down, there should be no movement. You may need to weight it down to get good contact with the glue if the boards are not really straight and flat. Sometimes glue will cause edge peeking because this introduces moisture from the glue.


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 Post subject: Re: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Tue Oct 26, 2021 9:33 am 
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The floor a thin plywood base, and an HDF core.

Good advice on weighing it down for adhesive contact -- definitely going to do that.

I've made a couple of sample boards with glued edges, then glued them down. Rock solid. Think I'm going to go that route.

Seem like I'll be the first person to ever edge-glue and glue down?


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 Post subject: Re: Can I glue-down AND edge-glue my engineered wood floor?
PostPosted: Sun May 22, 2022 11:47 pm 
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Joined: Sat May 02, 2009 3:45 pm
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Location: Tucson AZ
Many click engineered floors have a waxed edge to prevent that squeaking so the glue may not stick. Hard to tell.
I remember when Armstrong came out with one first it squeaked like he'll.
Then they waxed it.

So I think it's overkill myself.

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Stephen Perrera
Top Floor Installation Co.
Tucson, Arizona
Floor Repairs and Installation in Tucson, Az
http://www.tucsonazflooring.com


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