Problems gluing new carpet

[parmo]

Did a test on the first piece of deck i had to carpet today but it didn't turn out good.
Used qwik-grip applied a fair amount to just the ply the sheet was around 2.4 x 1m bye the time i finished applying it i put it down onto the carpet, we left it for maybe 20mins then turned it over so the carpet was onto and placed another piece of ply on top and then some timber to spread the weight and then some weights on top, a fair bit (two batteries and 20kgs of weights)
Then after 2.5 hours we took everything off turned it over so carpet was up and everything looked good it was griping well on all the sides then after about 3min it stared warping in the middle and got really bad, started with a few bubbles then ended up like waves. Then went on to pull the carpet right off and it stayed like that were all the glue was.
i probably used a third of one of the big cans of qwikgrip i think there 4L is that way to much?
My thinking is that all the weight we had on it compressed the carpet too much and then taking it off made it warp, maybe leaving the weight overnight and it wouldn't have. or i applied to much glue?

Any help or ideas would be really appreciated gonna have another go tomorrow

[Pistol]

Whenever I've glued carpet I've used Kwik Grip too and was surprised at how much soaks into the carpet. That said, if you've left it for 20min to be dry to touch you should be able to just apply the carpet to the ply and roll it with maybe a paint roller and its pretty much done. Shouldn't ned to leave it for 2 hours. Someone has mentioned that the glue used for artificial grass is the duck's guts so maybe search that. Bummer, good luck withit all from here on.

[manno]

I did mine using contact adhesive, might have been that same stuff but i always thought the whole point was you needed to coat both surfaces, allow them to touch dry or "tack off" then press together. Thats the way i did it and it worked perfect. Just keep in mind you get one chance at putting the ply in the right spot because once those two surfaces touch THATS IT! And no weights needed either.

Is that how you did it?

[Stephen Wilson]

not sure but I have always applied to both surfaces and waited till they become tacky then joined together never had a problem works for me

[scubascott]

Applying it to both surfaces is the go. As Stephen said let them get tacky and then stick together. Rub the carpet with a piece of wood or something similar to get all the surfaces of ply and carpet to bond then add weight to it as you did and allow it to set. I have used quik grip for my Patrol drawers and the carpet started seperating within 6 months. Dunlop artificial turf adhesive is the best stuff to use I found. Used it to fix my drawers and will be using it on the boat floor rebuild over Christmas.

[John Osborne]

Mate I am by no means an expert, but II recreated my boat about 3 years ago and it lives in the sun and rain, I used synthetic grass glue from burnings, did some research prior and went for it, turned out good, pain to spread used a spatula instead of a comb. Hope this helps, cheers.

[morgo_racing]

Same as John above, I've used turf glue and it's easy to use, you don't have to wait till it goes tacky, and you only have to put it on one side... And it sticks like buggery when it goes off....

[parmo]

thanks for the help guys.
On the directions for the qwik grip it did say the coating both surfaces and letting touch dry then joining but for "porous" material only coat one side wait a minute then join, do thats what we did.
I think ill try with the rest of the tin coating both sides and letting touch dry then joining and might even go with the turf adhesive for the rest as that seems to be the go.

[parmo]

forgot to add this pic.
This was just after i tore it off the ply, it was like this on the ply and stayed the same after i took it off.

[BOOMBOOM4216]

Hmm, good post! Hope this doesnt happen to me during my carpet install...

[Windknot]

I used the glue they use when they stick artificial turf down onto concrete. You can buy it at most hardware stores. I got mine at Bunnings. It sticks like poo to a blanket.

[Charlie]

Originally Posted by manno

I did mine using contact adhesive, might have been that same stuff but i always thought the whole point was you needed to coat both surfaces, allow them to touch dry or "tack off" then press together. Thats the way i did it and it worked perfect. Just keep in mind you get one chance at putting the ply in the right spot because once those two surfaces touch THATS IT! And no weights needed either.

Is that how you did it?

The professional way to approach it is to glue both surfaces and let them dry, then you place some cheap wooden dowel sticks down so you can position everything without it grabbing, pull the dowels out as you press it down and your done. Weight not a bad idea if you go thin on the glue but shouldn't usually be necessary.

[parmo]

I did know about applying the glue to both surfaces, but the directions for porous materials were to only do one side.. and i would class the carpet as "porous" ?

I ended up grabbing a 4L tin of the dunlop turf adhesive and used it all today on gluing the tops of all the pieces. It works really well its a very thick consistency.

I did try on a scrap piece of ply and carpet some of the qwik-grip and applied it with a v notch trowel to both surfaces and let touch dry and then placed them together and folded the carpet around the back and it stuck REALLY well.
Thats definitely the go and i think ill use the rest of the tin i have to do all the folding of the edges tomorrow as it grips and sets quicker than the turf adhesive i feel so will be easier for the edges and i won't need 100 clamps.
I think ill make a jig for cutting the corners as i have so many to do, one that goes straight from the edge for 12mm to cover the ply then out at a 45 degree angle that seems to make a neat fold for the corners.

Cheers for the help guys, ill post a photo of some finish pieces tomorrow