st3v3

Guys,
i have recently had my bathroom ceiling re-plastered,but when i painted it with bathroom moisture resistant paint, it started to crack and flake the paint off.

Today i rubbed it all down and used pva to seal it where the problem area was but now it looks like the paint has reacted again.

what do i need to do?

ALSO if it need re-plastering does any one want to do the job (also another 2 ceilings that needs doing aswell )
????
cheers
steve

Lee Reynolds

Does sound like you didn't prime the new plaster properly. A few decorators use a watery emulsion mixed with PVA adhesive first as it soaks into the new plaster to key but also seals it with the PVA. If you go straight on with emulsion especially silk then your gonna get problems If not right away then eventually.

XRdodgybird

Where abouts are you based, I have a house full of plasterers at the moment... lol.... both my partner and his workmate do it!

st3v3

i live in coventry (just outside)

if they want the work i can take good photos and give them area sizes and descriptions of work wanted?

st3v3

so what can i do to make things right lee?

Lee Reynolds

I dont really know ill be honest Steve. Im not a decorator, i dont know if it has to come off. Thing is that paint WONT have keyed to the plaster correctly, so pvs'ing over the paint and reskimming isnt going to solve anything as the plaster will be on the non keyed paint. I think you should be able to strip the paint back and try again, but ive not had to do it myself so not sure

rst in breaking

iTrader: (2)

sizing it with watery pva would have been the right thing to do first off but u obviously didnt know that. sound as though the plaster may have soaked up the paint which as acted as a primer poss? not my trade so just suggesting.

Brookesy

How long ago was it plastered, ideally you should leave it a few weeks before paining it. Fresh plaster is like a sponge it soaks up moisture like a sponge so thats why your paint reacted.

Rub it down & try again.

Basky

you can paint plaster as soon as it drys out(5-7 days usually)
as the paint gone stretchy like,you can sometime pva it 50/50 and whilst wet scrape the paint off

if not looks like the sander has to come out

st3v3

I have sanded down the area today, but also tried to seal it again with pva, but when i re-painted it the paint has reacted again,so im still a bit lost...


but keep up with the sugestions pls

Basky

i personally wouldnt seal it,as you dont on fresh plaster.
use cheap emulsion as an undercoat and you wont go far wrong

the benno

the problem was mate you didn't seal the new plaster first and the moisture resistant stuff you put on was to thick to soak in
unfortunately the only thing you can do is scrape it all off again ,as it's no good putting sealer on top
on new plaster (obviousley when fully dry) put a thin coat or 2 of contract emulsion on thinned with about 30% water (never pva) then whatever you like

dvid

I made this mistake in the first room I decorated having had the ceiling plastered.... My father in law is a decorator by trade lol but I forgot what he told me haven't forgotten this time round, he told me to paint the first coat with 20% water to soak in to the plaster as above, looks ot be much better this time

st3v3

ok thanks for that matey,will start scrapping later me thinks