plaster is not sticking well or bits of plaster falls off when trying to paint?

Question

when i plaster over a ceiling that has been painted and it has dryed.and when i give a coat of paint thats when bits falls off.(the plaster) i did pva it . it seems to only happen at the edges. what am i doing wrong . my full ceiling with new boards allway come out fine . could the prob, be gresse?? coz of this i am ending up spending more time on the job sorting out the bits that have come off..

Answer 1

Is the ceiling artexed , if so better to give light skim of bonding plaster first. Is the ceiling painted with gloss type paint or normal emulsion , normal emulsion should take plaster unless you skimming it to thin at the edges.
Try using sbr instead of pva , works a lot better.

Answer 2

for plaster, your OH is right. do you already know everyone else that should do it for you? you do no longer decide to wreck appealing plaster, it is so stressful to discover a plasterer now! yet another thought, reckoning on the burden of the photos, is to get image hangers at a ironmongery shop that are for plaster partitions, no longer drywall. ask the clerk. in case you have authentic "image hangers," that are slats of timber that are under your ceiling, yet run around the partitions of the room, what you do if so is discover a powerful, invisible twine. you purely placed a skinny nail in the plaster, against the wood casement the place you won't be in a position to work out it, and use the see-via twine (a good, lengthy length of it), threading it for the duration of the twine on the lower back of the image or perhaps with the undeniable fact that the hollow in the physique, making it into an angled shape, consequently dazzling the image on the wall. image hangers on partitions look something like "chair rails" on victorian plaster partitions. they have been placed there so as that the backs of chairs would not injury the plaster partitions.

Answer 3

you should never plaster over a painted ceiling with out some prep work first. the reason the plaster will not stick is because the paint wont let it.

Answer 4

you must prime with an oil primer / sealer 1st and then do your skim coat, whats happening is the compound takes so long to dry it's soaking the paint off with moisture that's why it's coming down. Thin coats of compound work better than one heavy coat, dry faster. Zinzeer makes a good product to hold down the edges of wallpaper and good for your problem too, it's a clear water based product but works well too, remember you must litely sand those boogers off

Answer 5

youve got flexible filler under that paint by the sounds of it ,,,try scoring the edges first before plastering to see if some form of caulk or even silcon sealant has been used ,if it is that you`ll have to remove it first ,then pva it

Answer 6

Are you using plaster? If it was previously painted it will not bond. Try drywall patching compound. The area needs to be clean of dirt and oil and de-glossed. Clean it with TSP first it is a cleaner, de-greaser, and de-glosser all in one.

Answer 7

i'm a painter and i have to ask did you scrape down the ceiling and rub it down??? if you did not then there is your problem,you can't just plaster over it straight away without preparing it first.more that likely you will have to patch up the bits that are crumbling away or if it's bad you miht have to replaster it,sorry for the bad news but i'm only tellin you my experience

Answer 8

When the ceiling was painted, did the also calk the corners and paint over it? I saw this more than once, and it will cause problems like that.

Answer 9

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Answer 10

Put some coving up! It's better on the eye and it hides sh*t plasterwork around the edges!