Painting new plaster

[spada01]

In the past I've used Leyland emulsion, first coat about 30% water, then two more coats.

Gave a decent finish, but would come off with even masking tape applied

I've heard of Leyland Super Leytex emulsion - designed for new plaster. Anyone used this and found it superior to normal emulsion?
http://www.leyland-paints.co.uk/leylandtrade_productdetails.asp?prodid=14

 

[Richard C]

I only ever use cheap own brand matt white, thinned 25-30%, I would not use vinyl or latex based paint for the initial coats. I apply 2/3 coats in quick succession before the previous is dry which helps adhesion, let dry overnight before applying chosen finish.

You adhesion problem may not have anything to do with the paint; it could be the plaster surface was over polished, dusty or even contaminated with PVA.

 

[rjl]

hi,you need to be using a contract matt paint,in other words its an emulsion without vinal in it.water 1st coat down by 10-20%.contract emulsion is specially for new plaster.hope this helps

 

[Richard C]

hi,you need to be using a contract matt paint,in other words its an emulsion without vinal in it.water 1st coat down by 10-20%.contract emulsion is specially for new plaster.hope this helps

Sorry don’t agree; you can of course use specialist primers or contract emulsion but you don’t need to go to that expense with mist coats & thinning just 10% is not enough for good paint adhesion & even 20% is marginal in my view. I’m mainly involved with renovation work & generally end up mist coating my own plaster work to show any imperfections; there are usually none. I do it all the time as per my previous post, never had any problems so up to you to decide OP!

 

[TheDec]

Contract emulsions are both designed and formulated to both mist and allow new plaster skim to breathe, if the op was to go down the contract route then they should not be thinned more than 20%.

There is a myth that the thinner a mist coat is the better the penatration will become, like I said a myth. The reality of it is it is a falsehood and doing such will only cover the surface with coloured water.

Dec

 

[Richard C]

There is a myth that the thinner a mist coat is the better the penatration will become, like I said a myth. The reality of it is it is a falsehood and doing such will only cover the surface with coloured water.

Don’t think so Dec, but I don’t really want to get into another argument with you about decorating; it’s not something I do as a trade, it merely supports other trades I do. It’s to do with surface porosity of the plaster which can be affected by all sorts of things, including how much idiot spreads sometimes over polish walls. Obviously over thinning is not going to achieve much other than a bucket full of lightly coloured water but new plaster sucks like hell & thinning allows the pigment to be drawn into the plaster pores giving better adhesion; stick the paint too thick & that will not happen, it just sits on the surface.

See OP; first you had no response at all so I though I would help & now you have 3 people arguing about how much to thin paint