What's causing this peeling paint?

[Dave B1]

The paint is only peeling at the joins in the plaster board. Apparently there was no issues with peeling paint until a decorator put tape over the cracks where the joins of the plaster board are. I'm guessing the heat and moisture from cooking on the Rayburn has reacted with the adhesive used to stick the tape on? To remedy this can I scrape of the flaking paint, sand smooth, filler, then paint over with a kitchen and bathroom paint? Looks like ordinary matt emulsion has been used.

 

[Wayners]

Distemper or white wash on ceiling.
This was applied years ago before modern emulsions that have vinyl in.
To answer.
You have a crack.
Moisture gets through the crack and behind the vinyl paint which then soaks into the chalky distemper, which will then lift the emulsion up on the surface.

Any crack with lifting paint along it nearly always has distemper or white wash under the emulsion.

 

[Dave B1]

Distemper or white wash on ceiling.
This was applied years ago before modern emulsions that have vinyl in.
To answer.
You have a crack.
Moisture gets through the crack and behind the vinyl paint which then soaks into the chalky distemper, which will then lift the emulsion up on the surface.

Any crack with lifting paint along it nearly always has distemper or white wash under the emulsion.

The owner of the property told me there was no peeling problems before a decorator put the tape over the cracks. Also it is a fairly modern bungalow and I thought distemper / limewash was only used in older properties?

 

[Dave B1]

Distemper or white wash on ceiling.
This was applied years ago before modern emulsions that have vinyl in.
To answer.
You have a crack.
Moisture gets through the crack and behind the vinyl paint which then soaks into the chalky distemper, which will then lift the emulsion up on the surface.

Any crack with lifting paint along it nearly always has distemper or white wash under the emulsion.

Is it possible the flaking paint could have occurred if the tape had filler put over it and just painted over without a mist coat?

 

[Wayners]

I don't always mist coat filler although I used toupret filler.
Easyfill needs a primer though so depends.
In saying that I've lashes on emulsion on rentals with no problem so it depends..
Durable emulsions or silk emulsion really need a primer or adding water.
Tapes lift at the edges so you can see tape which is 50mm wide.

You have humility problem with steam or condensation along that crack imo.

What's under?

 

[Dave B1]

I don't always mist coat filler although I used toupret filler.
Easyfill needs a primer though so depends.
In saying that I've lashes on emulsion on rentals with no problem so it depends..
Durable emulsions or silk emulsion really need a primer or adding water.
Tapes lift at the edges so you can see tape which is 50mm wide.

You have humility problem with steam or condensation along that crack imo.

What's under?

I'm not sure what's under. I think I will scrape off the loose paint, sand, then use Tetrion all purpose filler (ready mix tub) sand smooth, then mist coat with watered down paint. I'm not sure if I should use Johnstones trade covaplus matt emulsion or Dulux Easycare kitchen paint? There is definitely an issue with condensation as there was mold in a couple of rooms. Apparently my customer was only having the heating on for a few hours in the evenings. It certainly felt cold and damp in the property when I first looked at the job. I advised her to have the heating on low all the time rather than just for a few hours in the evening. I've also got her a hydrometer so she keep an eye on the humidity and try to keep it below 70% most of the time.

 

[Wayners]

When I say below. I ment below flakey paint.
Cooker or something?

70 humidity is high. Under 60 which is still a problem as no room for movement.
We stay under 50 to 55 running two dehumidifiers.
Modern problem they have which can be controlled and managed.
To fix.
Scrape off paint along crack and any loose.
Wash or dustless sand back to good
Peel stop
Tape and fill
Sand
Prime and paint.
Will probably happen again given time

 

[Dave B1]

Thanks, it's a Rayburn cooker, (commonly found in farm houses) They can give off a lot of heat. The cracking / peeling is worst nearest the Rayburn. I don't think she would want a dehumidifier but now she has the central heating on low most of the day the humidity is staying around 60% It will likely go much higher when cooking, bathing, showering.
Apparently there was no problem with peeling paint before the decorator put the tape on the cracks. Should I use matt emulsion or kitchen paint as a top coat? Which is least likely to peel? I'm guessing kitchen paint will resist heat and moisture better than matt vinyl emulsion?

 

[Wayners]

Steam hitting that ceiling from cooker is causing that then.
I thought so but just wanted to confirm.
Needs extractor hood or something above.
You will never stop that unfortunately.
Can put tidy but it's not going to last.

 

[Dave B1]

Extractor hood sounds like a good idea. Kitchen paint or Vinyl Emulsion?

 

[Dave B1]

Just realised there is a kettle on the Rayburn. I'll find out if there is water in it. If so it might be giving off some steam all the time because Rayburns are also used for heating.

 

[Wayners]

See what's under that emulsion.
It is plasterboard so maybe 1960s or 70s emulsion so chalky.
For years I bodged a cheap DIY orbital sander on a vacuum and hit ceiling damage like that.
Zinsser perma white might be a good option. Some use a standard eggshell