Newly plastered wall - Painting issue

AshRG7

I recently got an extension to my kitchen. I also got a wall and the ceiling re-plastered in the old part of the kitchen so it would blend in with the extension.
The plastering looked perfect but when we tried to paint both (at least 6 weeks later) the paint wouldnt take to it.
What i mean by that is, when it dried you could clearly see roller strokes.
In particular, the wall was very hard to roll...it was like the roller was only hitting certain parts of the wall.
Another 2 coats were added to both but it made no difference.
The ceiling is white, the wall is green and both look like they got terrible paint jobs. But the fact is that the painting was done by someone who has years of experience and painted other parts of the house to perfection (wirh decent brushes, rollers and paint).

Has anyone come across issues with plastering in terms of painting?

Im unsure how to proceed, especially with the wall as there are a now a number of chips in the wall (from chairs) and because of the numerous layers of paint on it its very noticeable.

listermint

It's still wet.

AshRG7

listermint wrote: »

It's still wet.

Thats cleared that up!

Uncle Pierre

Unlikely but not impossible that plaster was still wet if you'd left it a few weeks.

Suspect it might be something else instead, and would never have known this myself until we built our own house a few years ago and we had a hell of a lot of painting to do, but you're supposed to put something called a mist coat on new plaster first, before trying to paint it properly.

A mist coat is basically watered down paint, and it's fine to use cheap stuff - instructions here are as good as any -
https://www.wikihow.com/Mist-Coat-with-Paint

Just wondering - when you say the painting was done by somebody with years of experience, do you mean he or she is a professional painter/decorator who's been at it many years? Or was it somebody who's just a handy DIY person instead?

punisher5112

Did you prime it?

Did you add PVA glue in a mix with the paint?

Tails142

When I paint newly plastered walls I either water down the first coat 50/50 paint and water or apply pva glue coat as posters advice have mentioned.

secman

Watered down paint on new plaster is the way to go. If you get a "mapping" effect on the final coat using a roller, put a heavy coat on the area with a brush and when dry another coat with the roller. Got that tip here about 15 years ago.

AshRG7

Thanks for the info folks, good to know. The guy who painted it isnt a current professional but was in the past. Neither him nor the plasterer mentioned a mist coat, primer or pva though.

The funny thing is that the painting done on the new extension is perfect compared to the replastered wall and ceiling in the old part of the kitchen.

Same painter did the entire job.

Any tips on how to rectify it now that there are many layers of paint on both?

AshRG7

secman wrote: »

Watered down paint on new plaster is the way to go. If you get a "mapping" effect on the final coat using a roller, put a heavy coat on the area with a brush and when dry another coat with the roller. Got that tip here about 15 years ago.

Would these images display the mapping you mention?
Thanks

AshRG7

Uncle Pierre wrote: »

Unlikely but not impossible that plaster was still wet if you'd left it a few weeks.

Suspect it might be something else instead, and would never have known this myself until we built our own house a few years ago and we had a hell of a lot of painting to do, but you're supposed to put something called a mist coat on new plaster first, before trying to paint it properly.

A mist coat is basically watered down paint, and it's fine to use cheap stuff - instructions here are as good as any -
https://www.wikihow.com/Mist-Coat-with-Paint

Just wondering - when you say the painting was done by somebody with years of experience, do you mean he or she is a professional painter/decorator who's been at it many years? Or was it somebody who's just a handy DIY person instead?

Thanks for the info, good to know. The guy who painted it isnt a current professional but was in the past. Neither him nor the plasterer mentioned a mist coat though.

The funny thing is that the painting done on the new extension is perfect compared to the replastered wall and ceiling in the old part of the kitchen.

Same painter did the entire job.

AshRG7

punisher5112 wrote: »

Did you prime it?

Did you add PVA glue in a mix with the paint?

Unfortunately no. The painting turned out fine on the extension walls though without a primer etc.

Would you have any suggestions as to how i now rectify it? See images attached of current state. Thanks

Ceepo

AshRG7 wrote: »

Would these images display the mapping you mention?
Thanks

The part close to the rad and light switch looks like it was rolled with a dry roller when the paint was drying but not full dry. You can see the the "lapping" effect on the wall. This would give the paint an "orange peel" effect.
Anothe reasons paint might not " take" is the plaster was over trowled. This could make the roller slide when you are trying to paint the wall.
As other have stated, the 1st coat should have been thinned out.. Normally 15/20% should do it. This would depend on the brand and quality of paint.
There is absolutely no need to use pva either added to paint or prior to painting.

punisher5112

AshRG7 wrote: »

Unfortunately no. The painting turned out fine on the extension walls though without a primer etc.

Would you have any suggestions as to how i now rectify it? See images attached of current state. Thanks

Id sand it, sugar soap it and apply a mix of PVA and go from there.

Roller type could well be an issue and depending on heat the paint could be drying too quickly.....


By the way I'm no professional but have done quite an amount of painting and learned as I went along.

Nothing more satisfying then a good finish and been able to say I actually did that....

Uncle Pierre

Yeah, I remember the guy who told me about the need for the "mist coat" also telling me that if I didn't do it, I'd probably end up needing to sand off a lot of the paint and do it again.

By the way, I'm no professional either. Just a guy who knows he'll grief from the other half if this sort of thing isn't done as properly as possible!

Ceepo

punisher5112 wrote: »

Id sand it, sugar soap it and apply a mix of PVA and go from there.

Roller type could well be an issue and depending on heat the paint could be drying too quickly.....


By the way I'm no professional but have done quite an amount of painting and learned as I went along.

Nothing more satisfying then a good finish and been able to say I actually did that....

Unless there is grease grime etc on the surface there is no need to wash it down with sugar soap.
Also there is nothing to be gain by putting on pva at this point. Or any other point for that matter and this includes on new plaster prior the painting.