MegaSack DRAW - This year's winner is user - rgwb
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Slight problem - painting one area of house and I don't think I've sealed the plaster correctly. Have applied a mist coat plus two more coats on top, and the plaster has not been covered evenly. Because the area was difficult to get to, my mist coat was quite light and in restrospect, I didn't coat it effectively. So what are my options? Sand back to plaster? Keep adding coats of paint? Any help most appreciated 🙂
cheers
Not a painter decorator, but had the same happen to me a few years back,
In the room where I'd used a Dulux 'one coat' paint over the incorrectly sealed plaster, I had to sand back after the one coat stuff peeled off in (huge) parts leaving 'plateaus' of paint. On painting over this with normal paint, of course the 'plateau' edges still showed, Absolutely hideous.
In the other two rooms where I had used normal paint, the walls still looked smooth, just unevenly coloured. Basically I left them for a week to soak the paint in as much as they would, then applied another layer of watered down paint. Left that for a few more days and then applied another coat of undiluted white. The wall was smooth and the colour was solid.
HTH.
In the other two rooms where I had used normal paint, the walls still looked smooth, just unevenly coloured. Basically I left them for a week to soak the paint in as much as they would, then applied another layer of watered down paint. Left that for a few more days and then applied another coat of undiluted white. The wall was smooth and the colour was solid.
So you think applying another mist coat on top of the existing paint should do the job , followed by more coats?
Try a very light fill over the rough patch with some polyfiller using platerer's trowel. When dry very lightly and carefully sand (or even a carefully wipe with a damp cloth). Recoat but use a 4" roller and only gently go over once as you risk the dried paint sticking to the roller and coming away from the wall. Wait until properly dry (24hrs+). Repeat the filling process if it's still uneven. When dry, re-paint. Wait a couple of hours and then apply a final coat over the whole of the affected wall, but still use light pressure and a 4" roller on the affected area. That should sort it.
cheers, will try
How is it patch, is hte colour not even. If that's the case you may have just not got enough paint on there. I know when we did fresh plaster bits even after a watered down coat and two proper coats it took another coat so that the colour was perfect and didn't have any shadows.
Was the plaster dry before you painted? how long?
If the wall is smooth and the paint finish looks even just carying in colour put another coat on. It's domestic emulsion as long as the previous coats are dry you can put it on coat after coat (probably).
There's a whole can of worms here and two ways to go.
Plaster takes ~ 1,000 years + to dry properly! so its's never 'properly' dry.
Some people prefer to seal it first, possibly with a weak unibond solution, others like me prefer to give it a mist before using full strength paint.
I live in an old house with parts that have lime plaster. It was painted with vinyl silk ( spit ) and caused all sorts of problems through condensation. Consequently following advice we use Crown covermatt emulsion. It is an obliterating emulsion so covers with 1 coat ( 2 preferably ) but....it breathes!
It was designed for newly plastered walls, so let's it dry out naturally. That is perfect for our lime walls, and have used it everywhere. Some walls we've had skimmed, so I give it a coat of thinned then 1or 2 coats 'full' strength.
My dad was a painter and decorator for 55 years and did a 7 year apprenticeship. His knowledge was absolutely stunning, especially with older houses like mine. He always swore by crown paints. During a period of redundancy, i painted a bedroom for a friend. The Dulux matt white they gave me to use was see through after 1 coat! 2 coats barely covered, but it was their paint so that's what I used. After using the first tin, their other tin, Crown, covered in 1 coat. i now understand and believe my dad!
my tuppence
Q
sorry - had to bale out to help with kid's homework!
If you want to get some Crown Covermatt, find a Crown Trade Centre.
It'll be on an industrial estate near you, where the tradesmen get their kit.
You get it tinted to whatever shade you want, from a swatch type booklet, so the choice is immense. If you also want to you can get gloss paint to the same tint, so can 'loose' a radiator into a wall if you want to, or have same colour skirting boards etc.
It'll be cheaper then B&Q and you can't get this stuff there eihter.
best of luck
Q