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Painting over damp stains

  • 17-05-2014 9:13pm
    #1
    johnnyb6
    Registered Users, Registered Users 2 Posts: 591 ✭✭✭


    Hi I have some damp stains on white ceiling and I have painted white over then a few times but dark stains still come out. Has anyone any advice on how I can sort this.


    Thanking You


Comments

  • #2
    muffler
    Registered Users, Registered Users 2 Posts: 46,547 ✭✭✭✭muffler


    Just buy a tin of "stain blocker". There's different types and brands but any paint shop will have it.


  • #3
    game4it70
    Registered Users, Registered Users 2 Posts: 2,125 ✭✭✭game4it70


    No need to buy a stain blocker as some of them are rubbish (mainly the water-based ones).
    Just use a oil-based undercoat or flat oil.If its a biggish area use a mohair roller.


  • #4
    shroom007
    Closed Accounts Posts: 425 ✭✭shroom007


    bit of undercoat will do the trick


  • #5
    johnnyb6
    Registered Users, Registered Users 2 Posts: 591 ✭✭✭johnnyb6


    shroom007 wrote: »
    bit of undercoat will do the trick


    thanks for the help. I had heard of using the undercoat but wasn't sure the white emulsion would paint over it.


  • #6
    mymo
    Registered Users, Registered Users 2 Posts: 3,553 ✭✭✭mymo


    So long as you use undercoat (oil based is best) and not a gloss, you can paint emulsion over no problem.


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  • #7
    dharn
    Registered Users, Registered Users 2 Posts: 2,574 ✭✭✭dharn


    I have a problem with hardwall plaster the house was let get cold and damp so the paint peeled in places and the plaster is dusty underneath, what is the best way to treat this


  • #8
    johnnyb6
    Registered Users, Registered Users 2 Posts: 591 ✭✭✭johnnyb6


    dharn wrote: »
    I have a problem with hardwall plaster the house was let get cold and damp so the paint peeled in places and the plaster is dusty underneath, what is the best way to treat this


    I am no expert , but if it was me, I would remove all the loose plaster and re skim walls again and leave to dry then before painting.


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