Peeling paint question

fletcher89

Sorry if this has been asked before but as the title suggests I have a peeling paint problem I'm clueless about.

Moved into my home 5 years ago and all the walls were magnolia. Non of the walls were peeling, they were absolutely fine. Then last year I decided to redecorate my bedroom and within a few months the paint in one corner was peeling off, including the magnolia I'd painted on top of, taking it right back to plaster.
After a Google and asking my dad, I thought it might be due to damp, so I brought a dehumidifier, opened windows more and put some paint on my dad gave me to help protect the walls (can't remember what it was called). Haven't decorated my room since until last week. And low and behold a week after painting it's peeling again, yet again taking off all the paint until it's back to bare plaster.

Can anybody help me and give me some idea as to what is happening because I haven't got money to keep chucking at paint. This has not happened in any other room in my house, just my bedroom. Tia

Doozergirl

If it was freshly plastered and they didn't apply a mist coat then the paint often doesn't key to the wall. When you wet the original layer with a subsequent one, it lifts away from the plaster.

We've had it here. I peeled off everything I could and got the decorator to sand back what didn't come off and gave the whole wall a run over with sandpaper. Then started again.

It can and does happen particularly on outside walls that aren't that well insulated. It was worst on our north facing walls.

m0bov

Rub down, apply some white watered down emulsion. Then paint over that with the chosen colour.

fletcher89

Thanks for the response!! Yes, the corner mine started was an outside wall and the peeling spread onto the adjoining wall.

So do i need to sand down all my walls and paint as if I'm painting on fresh plaster?