I've been trying to paint old soft coving..After sanding down I put a coat of PVA (3:1), and then emulsion. However, after the second coat (left first overnight) there are many flaking/peeling areas. What should I do to rectify the situation?..cheers
painting old coving..
- Thread starter ellal
- Start date
Sponsored Links
What type of coving is it ? 1/gyproc. 2/polystirine. 3/old ornamental coving. 4/up-to-date ornamental coving i.e. 4 inch or 5 inch or 6 inch ? Also, u should have not applied Pva on an previously painted surface for over-coating with water based paint.
Quite right 
Sponsored Links
The coving is old and appears to be made of soft plaster - it is approx 30cm deep on the ceiling, and 20cm down the wall, consisting of a series of curves (concave & convex)Third_Eye said:
In preparation, all the exising paint was removed and that was why I thought 'sealing' with PVA was a good idea..
If that says DANGER its too many letters! Or have I lost the plot
- Joined
- 14 Mar 2005
- Messages
- 5,777
- Reaction score
- 30
- Country
It certainly sounds lie the 'big 'd'...or it could be fiberous plaster thats had its day...its it distemper then its ot going to be easy...id wash it down and scrub it back to the plaster of poss then give it a coat of thinned alkali resisting primer.
"ellal" you wrote, "In preparation, all the exising paint was removed and that was why I thought 'sealing' with PVA was a good idea.." However in your previous post you wrote, "After sanding down I put a coat of PVA (3:1)" Therefore IF u used the PVA mix at PVA 3/1 WATER then this mix is to thick for porous surfaces i.e. causing blistering. U should have done a PVA 1/5 WATER mix. Also, even a PVA 1/3 WATER is to thick. How did u get paint off in the first place ?
- Joined
- 14 Mar 2005
- Messages
- 5,777
- Reaction score
- 30
- Country
Could be a combination of the PVA and possibly the paint too thick maybe?..always a risk using PVA on distemper..its ok if its being washed off and just a bit of washing residue left but isnt a cure as such...there are a few paints out there that claim to be but Ive not used em.
The paint was removed by sanding/knife (2 bl**dy days worth..!)...
The mixture was 1 PVA to 3 water.
Between the paint and plaster was a grey/green coating which I assumed was the distemper, and which I thought I had fully removed (it wasn't everywhere - probably only made up approx 10% of the coving area) - does the distemper leave a residue in the plaster?
The mixture was 1 PVA to 3 water.
Between the paint and plaster was a grey/green coating which I assumed was the distemper, and which I thought I had fully removed (it wasn't everywhere - probably only made up approx 10% of the coving area) - does the distemper leave a residue in the plaster?
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
