We have a job which prohibits mechanical fasteners for holding the treated bottom plate of our interior walls to the concrete floor, because of the radiant tubing embedded in it. I’m wondering what would be a suitable adhesive for this situation?
Thanks
Nick C
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Replies
Databoy
PL Premium Urethane adhesive I think will give you the best chance. It stick tenaciously to just about everything.
Is the wood soaking wet?
One suggestion-drill some 3/8ths holes in the plate. Put blobs of glue on the bottom-injecting some up in those holes. Set it down and brace it off sideways so it doesn't move around. Use springboards (or your wall) to hold it down. I'd set the plates, then build a whole wall with another bottom plate. Stand it up and place it on top of that treated plate. Secure it forcing down that treated plate.
Best of luck.
Great suggestion- PL looks like what I need. I'll try some tests using holes in the plate and report back. I'll give it a few days and try to break the bond, and measure the shear strength. Thanks Calvin
Best of luck
Definitely report back.
I cannot say it'll do the trick, but it's something I'd try knowing the adhesive.
Urethane and moisture cure are compatible. Soaking wet PT, maybe yes-maybe no. Give it a good press and some time. And, I'd use air nailers/screwguns whenever working on this. Too much banging around b/4 full cure might dislodge it over time.
Interested to hear the results. I've used it with regular plates and radiant heat.
Just finished some showroom displays. Couple walls and a short tub surround. Couldn't fasten to the floor-radiant.
Couldn't use adhesive in case they change out the display over time.
Weight and overlap are my new best friends.
What Cal said.
Last summer I built a staircase out of soaking wet PT lumber and PL Premium. It was fastened with HD galvanized lags in pre-drilled holes. Foaming was a minor annoyance but easily trimmed away with a utility knife when fully cured.
It's rock solid. Remember urethane glue likes some moisture.
Scott
You mention foaming, could it have been Gorilla Glue you used?
>>>could it have been Gorilla
>>>could it have been Gorilla Glue you used?
Nope... although I have some of that in my freezer.
It was definitely PL Premium in a tube. It doesn't foam nearly as much as Gorilla, but if the lumber is wet, and you put enough on, it will foam a bit. I remember it was really hot out too, which might have had something to do with it.
I'd say either epoxy or one of the epoxy-like anchoring products. Scarify the concrete, and, as Cavin suggests, drill some shallow holes in the bottom of the plate.
You'll have a harder time getting a reliable bond to the PT wood than to the concrete.