[Closed] Any painters/decorators on here ?

Difficult with the photos and a P&D will be along in a mo. It has been mentioned on another paint post, silk will show up more issues as it reflects the light. They look ok on the pictures but i don't know what finish you are after, the last pic is a roller finish I like! Can't really see the streaks but could be my screen.

Yeah silk will show your roller strokes a bit more. Especially on a stairs wall, as you are looking along it. You've got to work like mad to keep the wet edge going and try to lay off in the same direction. Did you let the paint dry properly between coats as well? About 2 to 4 hours.
And turn the heating off while you are doing it. Won't dry out as quick.😀

Hi, think that’s just your ‘silk’ emulsion showing up a poor plastering job. The fact the paint finish is a bit textured is actually helping you, a smoother finish would make the plastering look even worse!
Paint sometimes goes like that when people mistakenly ‘pva’ new plaster before painting and paint streaking can be caused from the plaster having been over-troweled/polished.
Hope that helps, Paul.

Wipeable matt hides a multitude of sins
In the first and second pics, is that paint-streaking or an undulating surface with oblique lighting?
Was the mist coat non-vinyl, and was the plaster dry (a week or more)?
If it's gone badly wrong the paint will peel off easily when pulled, masking tape has sufficient tackiness to peel bad paint

I didn't see streaks as my eye was drawn to the massive crack in the stair side you didn't fill!

The lines look too uniform to be paint related. I'd guess it was either losing your wet edge and applying in areas or something similar with the plaster where you've ended up with two different mixes having slightly different properties. Join between boards?

The roughness I'm not so sure. I've seen it when paint is applied too thick but it normally flows out and smooths itself. Unless as someone suggested above there is something weird on the plaster. Things don't always wet out as they should. If you have a super smooth plaster surface, perhaps with some contaminant on it the paint will try and bead up like you would see on a water proof jacket. I'd say that looks more like a texture thing than that though, like it was rolled as it had started to dry.

None of this helps.

What I would do at this point is to allow it to dry thoroughly. Take a fine grade sand paper over the wall to smooth it off and apply another coat. 2 coats onto fresh plaster might not be enough. I think most people would normally apply a primer or thinned back white emulsion as a first coat.

I'd fill that massive gap at the bottom too 😉

Haha thanks for the replies.

Right let's get the gap out of the way first..... I have some quadrant to go over it.

Ok, so the plaster job was some of the best I've ever seen. The walls were super smooth and like glass. It was left about two weeks to dry properly.

As a mist coat I used some of the no nonsense bare plaster paint from Screwfix

https://www.screwfix.com/p/no-nonsense-trade-bare-plaster-paint-brilliant-white-10ltr/51004

This was left a week to dry and then given a quick sand and wipe down before starting to paint.

The lines you can see are in the paint.

The prep seems to be good, this...

What I would do at this point is to allow it to dry thoroughly. Take a fine grade sand paper over the wall to smooth it off and apply another coat

That last picture is a texture called orange peel which you get when using a roller.
Silk paint will always show imperfections.

P+D here. Here's a tip for you. Don't use silk emulsion, it's shit.

😃😃.

I did try and tell my wife that but ....

Move house? 😉

Sorry Renton but super smooth is not the same as ‘flat’ and ‘polished like glass’ is also a bad sign, often giving the first coat or two of paint a streaky appearance as it doesn’t dry uniformly.
Hold a 6’ straight edge across the wall and see how flat it is as it certainly look like it’s all over the place in your photo’s.
Cheers, Paul. (Plastering for 38 years)

Hi Paul. .
I should point out that where it looks like the wall is not even is actually the finish in the paint. It's almost like two different shades.

How many tins of paint did you use? Did you switch tins through the job?

The irregularities in finish look like what happens when you have depressions in the wall surface to me You end up over working the paint on the high spots.

The orange peel can be from overworking, or applying paint when it's too humid, to warm etc. You can buy a solution which extends the working time which may help.

Did you wet the roller with water before you started? Load roller, apply in a m or w, roll out straight up and down, always leading with the arm side of the roller?

P&D here.
The mist coat should have been a very watered down coat of cheap (contractors) emulsion which is applied when the plaster is properly dry. The new plaster sucks all of the water out of this and effectively seals the wall ready for painting. Mist coats dry double quick, no need to wait a week as half an hour would have done.
The stippled effect could be due to the wall not being properly sealed with a mist coat or maybe the following coats of silk were applied too thickly. Apart from being unfashionable the sheen of silk will show up roller marks way more than matt especially in a stairwell with light shining down it,a nightmare combination.
To rectify get a sanding pad on a pole and sand what you've done, no need to go mad. Then paint with Matt emulsion.
It looks like natural light from a window on the landing will make it difficult to hide roller lines whatever you do.
The professional finish that you're after takes practice basically.