PVA wood glue

[Cogcog]

Is it all the same?

My joiner tells me that he thinks the waterproof version is not as good at the 'sticking' job as the non waterproof. The manufacturers of the floor he is laying say to use a PVA glue with a low water content.

[zcacogp]

I am reliably informed not, although they do all seem the same to look at. There are some interesting posts on woodworkers forums about the pros and cons of different PVA's.

I have experience of the pink-coloured stuff (make by pinkgrip, I think) falling apart after not much more than 12 months light load indoors.


Oli.

[Simpo Two]

Is 'low water content' the same thing as 'waterproof' or does it just mean it's less runny?

[Cogcog]

That is the point, I don't know.

[Cogcog]

I bought a gallon from the local trade centre and glued two pices of tongue and grove together yesterday. It says it takes 24 hours to cure but by last night I had to prise the 2 pieces off the wood I had rested them on with a screwdriver where a few drops had run through, so it is looking pretty solid. £9 a gallon.

How it performs long term is another thing but I need it for a floating engineered floor.

Edited by Cogcog on Sunday 16th October 09:41

[Simpo Two]

That still doesn't tell you if it's waterproof. Soak the test bit overnight and see if the glue softens.


But £9 a gallon seems remarkably cheap considering you pay half that for a tiny pot of the Evo-Stik version!

[ncs]

I might be wrong, but doesnt wood glue come in waterproof or standard options, PVA is a different thing without the options if I recall.

Despite selling the dtuff by the gallon Ive never checked.

Nick

[Hackney]

PVA and waterproof PVA are exactly the same they just come in a different coloured tin

[Mr GrimNasty]

No they're not. There are differences in the formulation, the protective colloids used etc.

Apparently in tests water resistant PVA gives a stronger bond for hardwoods, and normal PVA is stronger for softwoods.

Edited by Mr GrimNasty on Sunday 16th October 17:43

[Hackney]

Well, they were when I worked for a company that manufactured the product 15 years ago

[Mr GrimNasty]

Hackney said:

Well, they were when I worked for a company that manufactured the product 15 years ago

I call BS mate.