I have a plasetered ceiling that is plastered onto plastered that is screwed to the ceiling. Some of the plaster on the screwheads started to 'bubble up' and then fallen off. I have tried filling with polyfiller but some don't take...
2007-01-04 20:27:41 · 8 answers · asked by newpark 2 in Home & Garden ➔ Decorating & Remodeling
Are the screw heads rusty? If they are,try to scrape it off in places and clear the dead plaster and any other old c**p off the screw heads.
Screw them in a bit more if you can... sometimes the plaster shakes off cos the screws are loose and move. Sometimes filler doesn't take well if youve got a shallow layer on steel because the layer is too thin to be strong.
If you use powder filler mix a bit of PVA (white wood glue or runny paper glue) in with the mix - makes it more sticky and makes it stick to the edges of the hole as well as the screw. About a teaspoon full of glue to an egg cup of powder should be OK. Shove it in firmly so it gets into the screw slot too. If you use ready-made filler then adding this much glue maybe will make it too runny to use so don't try it.
Alternatively, use frame sealant in a tube for these screws... it sticks better and is a bit flexible, but it shrinks in deep layers so will need 2-3 goes. It can be painted with wall paint once its dry.
2007-01-04 20:39:05 · answer #1 · answered by bambamitsdead 6 · 0⤊ 0⤋
Not seen this before. Tap the plaster that is still there with your knuckles. Does it sound hollow? If so get a damp meter. If it is damp you need to find out why and rectify. If it is dry the plaster is not keyed on properly. In any case it will mostly need to be removed so just fetch off the loose stuff. Test it for damp. If it`s Ok clean up your walls to save money, then get a proffessional in to sort it.
2016-05-23 05:20:19 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Splatweas is correct, prior to painting your newly plasterboad or plaster ceiling that has screws,(poppers) I would go round the whole ceiling, and apply PVA to these poppers, even the ones that has shed its plaster.
Then fill these screwholes with just your ordinary powder filler, rub down when dry, apply PVA again, and if need be re-fill, till the filler is flush with the ceiling.
Rub down again till smooth, then dab PVA again on them, when dry paint as normal, I can assure you they wont crack or pop off again, I do it all the time on new plasterboard that has been skimmed.
2007-01-06 03:30:11 · answer #3 · answered by Gracey 2 · 0⤊ 0⤋
the boards should have been nailed up with proper galvinised nails for boards. (large head clout)
Screws are likely to shift, as is the case and their surface is not ideal for plaster bonding, as you now know.
If it is your property and you intended to stay there, you could re plaster over and hope the extra thickness prevents it happening again. Or a complete re-nail and plaster. Lots of mess involved!!
2007-01-04 20:30:25 · answer #4 · answered by dsclimb1 5 · 0⤊ 0⤋
While in college I learned a neat trick: Buy white toothpaste and backfill the holes. The stuff is sticky and has a lot of white clay content, so that when it dries out it will not shrink off. I've patched so many nail holes like that I am surprised my previous apts didn't end up smelling minty.
2007-01-05 00:39:25 · answer #5 · answered by anon 5 · 0⤊ 0⤋
Paint with PVA to help the plaster stick.
2007-01-04 20:30:16 · answer #6 · answered by Spiny Norman 7 · 1⤊ 0⤋
Drive the screws in further and fill the holes with hot mud
2007-01-05 04:30:34 · answer #7 · answered by Anonymous · 0⤊ 0⤋
try to sink the screws in a little futher:::; apply pva adhisive to the head ,let dry,fill,let dry,lightly sand
2007-01-04 20:32:23 · answer #8 · answered by Anonymous · 1⤊ 0⤋