best paint / sealant on old plaster wall

[handsomejackuk]

Hi,

I have just spent half a day scraping off about 20 years of vinyl paint and emulsion off a plasterboard, and plastered wall... as was going mouldy and staying damp / holding water...prety sure its only condensation, as it is bedroom, and we dont get much sun / heat on the wall... have gone back to the plaster and all seems to be drying out nicely... the plaster top coat needs a bit of filling but not too much...

what would be the best paint / sealant / unibond or covering to put back on the bare plaster... before i paint a colour...???

i wont be using vinyl again, as it seems to hold moisture..

 

[dcdec]

Apply a mist coat to the bare plaster which is emulsion watered down between 20-30% depending on how thick it is to begin with. Or a coat of zinnser gardz.

Any source of damp will cause problems to a paint film, if its an external wall that could be a source but if it is condensation it will still be a problem. Eggshell is tougher and more resistant and easier to maintain and zinsser do a coating designed to be mould resistant but cant remember what its called. If your thinking of putting a non to low vinyl on like contract emulsion or estate emulsion it won't handle cleaning and wiping etc.

 

[handsomejackuk]

when you say mist coat...do you mean paint it on ??? just wondered what is meant by mist ? as apposed to sprayed on... i just wondering... thanks...

 

[dcdec]

Yep, just apply as you would a normal coat of paint