Removing PVA glue from walls


Postby Benny999 » Mon Feb 23, 2009 10:01 am

Hi,

I've recently had a ceiling in a bedroom skimmed. Before the plasterers did this they coated the ceiling surface with a diluted PVA mix. The problem is that this mix dripped down the walls, which I'm not having re-plastered. I want to paint the walls (some are currently just plaster others have paint on them), however when I tried to do this big drip marks could be seen through the paint. I've tried to scrap the glue off but this takes some of the plaster off as well, leaving me with damaged walls. Does anybody have any suggestions for how I can remove PVA glue from walls without damaging them?

Thanks very much!
Benny999
Posts: 1
Joined: Mon Feb 23, 2009 9:54 am

Sponsor

Simply Build It

Postby rigga » Mon Feb 23, 2009 4:44 pm

Benny999
Amyl acetate, toluene, and also cellulose thinners will remove set Polly vinyl acetate.
rigga
Posts: 52
Joined: Tue Feb 17, 2009 5:46 pm


Postby pbp » Tue Feb 24, 2009 11:16 am

If you look on the removing paint on the projects page a product called Home Strip paint and varnish remover will also remove glue. The product is totally safe and wont have any affects on your health compared to solvents that could potentially kill you.
pbp
Posts: 23
Joined: Tue Feb 12, 2008 9:38 am


Postby rosebery » Tue Feb 24, 2009 8:41 pm

[quote="pbp"]If you look on the removing paint on the projects page: http://www.diydoctor.org.uk/projects/paintstrip.htm a product called Home Strip paint and varnish remover will also remove glue. The product is totally safe and wont have any affects on your health compared to solvents that could potentially kill you.[/quote]

It will also probably be worth contacting Eco Solutions to check whether the product will also work on PVA.

If not, hot water can work well in most cases.

Cheers
rosebery
Posts: 2022
Joined: Wed Sep 26, 2007 8:55 pm


Postby vidwiz » Thu Jun 19, 2014 11:36 am

Hi, you could try an electric sander over the PVA.

The trouble is that PVA, once dry, is designed to be waterproof so I doubt washing it with warm water would work too well.

If there isn't any physical lumps of the glue it shouldn't really be visible after 2 good coats of Matt Emulsion because it can be used as a sealer on walls before painting anyway.

If the worst comes to worst you could always seal all your walls with PVA then when you paint them they will be all uniform.

Hope you get it sorted soon.
vidwiz
Posts: 6
Joined: Fri Jun 13, 2014 10:43 am


Postby proptech » Thu Jun 19, 2014 6:30 pm

Although this is a very old thread, I do have to jump in here. vidwiz has suggested sealing walls with PVA. Under no circumstances should this be done. It can cause all sorts of problems. Even the manufacturers do not recommend it to be used in this way.
PVA is a very useful product with many uses, but has no place in decorating work.
proptech
Posts: 233
Joined: Wed Dec 05, 2012 11:22 pm


Postby vidwiz » Sun Jun 22, 2014 8:46 am

Having C&G in my trade and being a decorator for 20 years plus I can assure you that PVA,, if used correctly, can be very useful to the DIY decorator as well as very cost effective.
Yes it must not be used on fresh, dry plaster due to salts needing to get to the surface over time (efflorescence) nor should it be used on fresh drying plaster as the water would have no where to go.
However, older porous substrates can be effectively sealed prior to decoration. Emulsion paint can mechanically bond to the tacky finish of diluted PVA as well as bond at a molecular level.

This argument has gone on since the dawn of PVA time so I will say no more now, there's already plenty of info on the net if people wish to research for themselves.
vidwiz
Posts: 6
Joined: Fri Jun 13, 2014 10:43 am


Display posts from previous
Sort by
Order by


 


  • Related Topics