Any recommendations of how to hide the stains? Tried a Homebase 'damp stain remover' and no success.
A coat of gloss then Matt or Silk will do it
Has it thoroughly dried out? Use a branded product too.
There's plenty of stain sealing products about but giving it a coat of some oil based undercoat will do.
Not gloss.
thanks - maybe a daft qn, is solvent based undercoat the same as oil based? And can I then just emulsion paint over the solvent paint once dry? Sorry for the numpty questions!
Read title as "Painting over a Blood stained ceiling" and was a tad worried!
I think the solvent based will be too thin.
http://www.zinsseruk.com/product/cover-stain/
used this to cover a wall painting I'll see if I can find pic of it
posting pics from a mobile is a pain in hoop.
2 two coats of stain block and 2 coats of magnolia and the wall "art" was gone
Depends on the size of the damp stain. You can get a tin of spray on stain block or a tin of brush on stuff like Zinsser BIN then just emulsion over the top. Solvent/oil based is the same stuff.
As above, I'd use a couple of coats of BIN then emulsion.
Used a spray can of Zinsser BIN a couple of weekends ago, painted over with kitchen paint 2 hours later.........one of those "I wish i had done that sooner' jobs
Zinsser, it's expensive and absolutely stinks but does the job.
The Zinsser cover stain, despite its name is useless, utterly rubbish on water stains. Zinsser bin (shellac) works a treat. Hands down easiest and cheapest is a solvent based, wrongly named but yes also known as oil based, undercoat. Dulux or the cheaper glidden one will do
Oil based undercoat. Job done.
Just used a lot of coverstain to sort a flooded property and wasn't too impressed like some others.If it's not too important it seems oil based undercoat will do but many pros don't use it anymore since voc changes made it less efficient.Never tried BIN but I know what it stands for ..bet none of the other posters do.I was interested and asked on their tech helpline..who didn't know! After further research found it was shortened version of from Bulls I Namel ! Useless info but true!
You could try sanding it, then a 50/50 mix of emulsion and water to soak into the board. Then when dry, paint as normal.
Zinsser 123 is their water-based one and works almost as well. Covered a fire/smoke damaged wall (cooker hood electrical fire) nicely, one coat of that then two of the coloured emulsion and its looking perfect again.
Oil based undercoat still works fine despite VOC changes. On average Ive painted five bathroom conversions or newly fitted kitchens a week for past 3 years never had an issue with it. Covers water, smoke, fat, blood and unknown stains very well.
Thanks all ... have some solvent based paint so off to give it a go