Polybond and Paint

squire1 · 13-11-2006 09:50AM #1

I offered to give a friend a hand to paint some rooms in his new house. On inspection I find that he has polybonded the newly plastered walls in the bathroom as an "expert" advised him.

What is the fix for this? Do I have to remove the polybond from the wall before painting? Light sandpaper, soapy sponge etc.

Any advice?

CJhaughey · 13-11-2006 10:48AM

Polybond is fine , just paint over it.
I was advised to use it over new plasterboard by professional painters as it reduces the porosity of the wall and allows paint to stick much better.

squire1 · 13-11-2006 01:28PM

Thanks CJ. It's just that I would normally just use a thinned out emulsion as a base coat on new plastered walls.

I've been told by professionals never to use polybond under paint so even the experts can't agree.:rolleyes:

mad m · 14-11-2006 12:16AM

squire1 wrote:

Thanks CJ. It's just that I would normally just use a thinned out emulsion as a base coat on new plastered walls.

I've been told by professionals never to use polybond under paint so even the experts can't agree.:rolleyes:

Who says the ones who said polybond walls before painting are experts? I'd go with watered down emulsion everytime,and that opinion is from a qualified painter.:)

Wertz · 14-11-2006 08:32PM

Polybond on new skimcoat = waste of time and money

You need an extra coat of paint to obliterate the walls anyhow

It will likely lead to trouble on down the road as PVA leaves a shiny finish that emulsion won't adhere to properly; any scuffs or knocks are liable to result in the paint chippping back to the skimcoat/PVA

Any painter worth hheir salt wouldn't go to a bare plaster wall and fire on a coat of sheened finish....so why would they apply PVA, which is essentialy the binder that all sheened emulsions partly consist of?
Thinned out matt every time: kill the bareness, seal the wall and provide a sound substrate for any type of finish.

[edit] to answer the OP, light sanding (with a pad/sponge) to break the sheen and provide some key.
Personally I'd apply a coat of straight matt in the finish colour before applying 2 coats of your chosen finish (or perhaps 1 coat if a matt finish is what she wants)

squire1 · 15-11-2006 09:10AM

Thanks Wertz, thats what I was after.

Polybond and Paint

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