UKC

pva and waterproofing

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Removed User 01 Apr 2010
I'v searched the forums and cant find the answer im after. Has anyone actually used watered down pva glue to re-proof there jacket?? an does it work.

thanks
 wilkie14c 01 Apr 2010
In reply to Removed User:
Using something water soluble to protect from water? I've a feeling that won't work.
 Yanis Nayu 01 Apr 2010
In reply to Removed User: I postulated on here recently that Nikwax Direct In is watered down PVA glue. No-one was able to confirm or deny.
 JSA 01 Apr 2010
In reply to blanchie14c:

It's only water soluble in its liquid state
 wilkie14c 01 Apr 2010
In reply to the inspiral carpet:
Ah, good good. so once its 'gone off' it won't turn back to white gloop when wet then. Maybe it could work.
Removed User 01 Apr 2010
In reply to the inspiral carpet:
> (In reply to blanchie14c)
>
> It's only water soluble in its liquid state

I'm afraid not. That said it's not particularly soluble but given time it will dissolve. You wouldn't want to sail across the Atlantic in a fabric boat that had been proofed in PVA.

I realise it's often used for sealing walls and stuff but it only works because it doesn't get very wet very often for very long.



 Sharp 01 Apr 2010
In reply to Removed User: Even if it worked at keeping the rain out surely it would reduce it's breathablitiy substantially.
 JSA 01 Apr 2010
In reply to Removed User:

If you look at the majority of PVA containers then you'll see that it's suitable for outdoor use aswell.

That as well as proofing a jacket is hardly in the same league as sailing the atlantic.

http://www.wood-finishes-direct.com/products/wood-finishes/glues-and-adhesi...

Removed User 01 Apr 2010
In reply to the inspiral carpet:
> (In reply to Eric9Points)
>
> If you look at the majority of PVA containers then you'll see that it's suitable for outdoor use aswell.

Fair enough but I'm just recalling what I was taught and my experience of trying to use it as an adhesive on an outdoor product.

I had a quick look around the interweb and couldn't find a great deal on it but here's something that gives a few clues: http://www.wisegeek.com/what-is-polyvinyl-acetate.htm

See one of the paras near the bottom. It looks like water resistance can be improved by adding plasticisers perhaps that the trick..

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