Help! New plaster won't take paint.

milliebear00001

Hi there

We painted our dining room when we moved in a year ago. We painted over the emulsion which was already on the walls.

No, I have a dryer in the understairs cupboard, and I think this has caused the paint on the other side of the wall to lift (possibly the condensation or the heat?) and peel. I now have a lovely patch of bare plaster on my dining room wall.

I am pretty sure this is because the old residents didn't do a mist coat when they had the dining room replastered, but I need to know the best way to tackle it. Do I need to strip all the wall back and repaint? Please say no!

Yorkie1

milliebear00001 wrote: »

Hi there

We painted our dining room when we moved in a year ago. We painted over the emulsion which was already on the walls.

No, I have a dryer in the understairs cupboard, and I think this has caused the paint on the other side of the wall to lift (possibly the condensation or the heat?) and peel. I now have a lovely patch of bare plaster on my dining room wall.

I am pretty sure this is because the old residents didn't do a mist coat when they had the dining room replastered, but I need to know the best way to tackle it. Do I need to strip all the wall back and repaint? Please say no!

Just to advise any other posters reading this, that milliebear has now got responses on her new thread with this question, so best to add any contributions to her question to that thread in order to keep them all together and avoid confusing this thread

keystone

Procrastinator333 wrote: »

We have just had the whole house skimmed - all walls and ceilings. This has resulted in lots of painting!

We are using Dulux Super Matt (B&Q seems to be cheapest for this, but still £35 for 10L). 1st Mist coat - Adding about 30% water. Then a second and 3rd coat with about 15-20% water. Then after the 3 coats we are going for the topcoats.

This seems to be working well for us. Might be worth a try?

One mist coat is sufficient in most instances. Use your finish for the second coat but thin it by about 10% and apply the final coat of finish neat. Lightly abrade after each coat to remove any nibs or paint lumps/bits. You've not done anything wrong BTW just used more paint and time than you really needed to.

Cheers

Plasterer

What you have done is spot on with the prep.

When a whole house has been reskimmed you will find this will happen in some areas - usually where you have a slight imperfection in the original wall/ceiling. The plasterer will be "hitting" these imperfections with the same pressure as the rest of the wall but as they are "high" points will be "polishing" these areas more than the rest of the wall. Most of the time a good spread will know where these are and compensate with the trowel to minimize this happening - however depends what mood the spread is in as to how much attention is paid to these areas (Ie hangover from hell, dont like the decorators following them etc.)

All I can suggest is what has already been mentioned sand it back and go again.
Goog luck
P

Falling_Down_House

Thanks everyone for your replies.

I'm going to sand back again and add some primer to the spots that are affected (they are only small, but a lot close together). I went looking for primer in B&Q and they had a pretty limited choice, a Dulux water based one or the one I actually got which was Zinsser Cover Stain (solvent based) which says it can be used to prime and seal. Does this product sound about right, or am I just about to make matters worse???!