I've just had a room boarded and skimmed. The first two coats I used "No Nonsense Trade Bare Plaster Paint Brilliant White" and applied it with a wooster pro doo z roller. https://www.screwfix.com/p/wooster-pro-doo-z-roller-sleeve-polyester-pile-9-x-70mm/5274x I didn't realise but the roller has a 1/2" nap I've since reduced to a 3/8" pro doo z roller. It's had 3 coats of Valspar v300 Rocky Mountain Mist (R205E) and it has a "orange peel" effect. The texture is so porous that it has a shadow so it looks even darker in places. You can also see lines where I've rolled, presumably too thin. Weirdly the colour has turned out blue, nothing like the gray it's meant to be. I've been laying off in the same direction, working away from the wet edge. Whats the best way of fixing this? If I sand the wall, do I need to seal it? The paint dries extremely quick but I've now used 15ltrs of colour paint (standard 4 walls, bay window 1930's semi detached house). I never watered down the No Nonsens Bare Plaster paint, was that the mistake?
No Nonsense Bare Plaster was applied with 1/2". Valspar v300 was applied with 3/8". Walls were washed before doing the white bare plaster.
First coat should have been a mist coat to seal the plaster as new bare plaster really soaks up the moisture out of the paint and dries out as you have described. How long ago was the wall plastered.
About a 5 weeks ago. I thought the bare plaster paint would have sealed the plaster. Whats the best way to fix?
Is the Valspar paint a vinyl? Don't know a lot about Valspar paint and never use it due to loads of bad reviews.
It's water based matt emulsion. Nothing on the tin that indicates vinyl/acrylic https://www.valsparpaint.co.uk/products/walls-ceilings/valspar-blend-v300-walls-ceilings/
If the emulsion is a non vinyl product and still reasonably fresh you may be lucky to wash it off with hot water and a sugar soap solution, certainly the No Nonsense will wash off. Try a test area just with hot water and a splash of washing up liquid in it to keep it lubricated, apply with one of those scotch bright washing up pads. Just read the spec and it says its wipeable so not looking hopeful I'm afraid.
Wash off, mist coat, paint again? If it doesnt wash, sand mist coat, paint? Whats best formula for mist coat?
The ‘orange peel effect’ is usually down to a few things such as; Very fluffy roller, puts a lot of paint onto wall and if not spread out, will leave a heavy texture Paint to thick and again not spread out leaving heavy texture Going back and over prev rollered sections as paint is drying. This picks up the paint as paint gets sticky as drying and again, leaves a heavy texture Maybe some other issues as well Emuslion easy to sand, loads of dust but can be smoothed off and really start again. Just have to evenly sand the walls all back to a uniform texture There’s a saying that if you can p iss you can paint ........ It’s simply not true, there’s more to it than that (Painting that is)
@Astramax I'm a bit gutted like. I had a little sand of a few high spots this morning and it came up smooth. But I'll try washing it with warm water and sugar soap first because it'll be easier.
If you decide to sand it down look at something like the Marshalltown dry wall sander and a roll of sanding mesh. Surprisingly good for the price and hooked up to a workshop vac seriously reduces the dust. Still a lously job to do though. When you repaint I'd give the Valspar a miss!
Only need to mist coat if you get down to bare plaster You’ve got 2 coats of bare plaster paint and 3 topcoats on so there’s a chance you can sand down flat without hitting bare plaster Haven’t used either paints so can’t comment on them, both what there like to apply and how easy to sand. I’ve never bothered with new plaster paints - have simply allowed plaster to fully dry then 1 or 2 mist coats - trade matt emuslion -No Vinyl- watered down to single cream consistency. Light rub down before mist coat (depending on plaster finish) and very light rub down between mist and top coat p180 So, try the sanding route I guess if it won’t wash off. P120 grit paper, buy quality sandpaper from say our hosts, not rubbish from 99p store Wouldn’t use an electric sanded, more likely to get marks in the plaster so try a hand sander. Loads of dust so wear a good quality dust mask and cover everything up Don’t know what type emuslion uv used but regular emulsion sands easily. What you don’t want to do is use small bits of sandpaper scrunched up as obviousley it will take ages but also you need to sand the walls smooth but also flat. Using small bits of paper in your hand will lead to dips So try sanding, work methodically in sections with the hand sander and p120 paper. Yes you can buy fancy sanding machines with great extraction but for a 1 off job ? I’m guessing the finish is down to poor technique (no offence really) How’s your previous painting finished up ? If the newly plastered walls are nice and flat (they should be), use a short pile roller, medium pile the heaviest You have to judge if paint needs thinning with a splash of water, sometimes first coat does so it flows nicely. 2nd coats then glides over 1st coat. Don’t over roller though and don’t keep going over previously rollered sections Good luck
The Marshallstown sander I mentioned earlier (others are available!) is a hand sander so still hard work but minimal dust. Agree with Dave that a powered sander is not wise as it will trash the plaster if not used with great care and miles too expensive for a one off job. Father in law bought Valspar as it was on offer cheap somewhere then asked me to paint his place for him. I couldn't get on with the Valspar. Went and got Johnstones Matt and all was well! That reminds me he still owes me for the paint! Good luck