TheApocaLuke t1_jdoip8v wrote on March 25, 2023 at 11:21 PM

If the old paint is still attached firmly you can sometimes just put an undercoat with the sealer/primer you'd use to prep bare plaster. Did you do the test where you score an x and then see if the old paint pulls up with tape?

If you are putting acrylic paint over oil based paint you often need an undercoat anyway.

I've only ever gotten a good result on flaky/cracked/shitty paint by stripping and starting again. Took me two attempts on a big ceiling to learn my lesson.

jacobo164 OP t1_jdp0pj8 wrote on March 26, 2023 at 1:36 AM

Thanks for the suggestion. I just did the X test, the edges of the score came away slightly during scoring which the tape then removed, less than 1mm though.

The adhesion of the old paint seems to be the problem, I washed a new section and attempted to scrape off the bubbles as they appeared... While doing this a whole section of the paint came away, revealing a layer of blue paint. The blue paint seems to have adhered properly so it looks like the best option is to strip the whole wall of the top layers of paint