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Fat/ grease on plaster before tiling. HELP!

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  1. #1
    Apprentice (new member)
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    Default Fat/ grease on plaster before tiling. HELP!

    Howdy tilers. Iím doing a DIY tile splash back but we used the oven cooktop a bit before Iíve nearly gotten around to actually tiling it resulting in fat and grease ending up on the gyprock/plaster. Will the tiles stick to it? I have a Dunlop brand multipurpose primer for porous surfaces I thought about using on the plaster first. Will this work? Any thoughts and help appreciated.
    Cheers

  2. #2
    Community Moderator phild01's Avatar
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    Un12, please change your profile location, state level as a minimum, it helps with member advice.

  3. #3
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    Quote Originally Posted by Username12 View Post
    Howdy tilers. I’m doing a DIY tile splash back but we used the oven cooktop a bit before I’ve nearly gotten around to actually tiling it resulting in fat and grease ending up on the gyprock/plaster. Will the tiles stick to it? I have a Dunlop brand multipurpose primer for porous surfaces I thought about using on the plaster first. Will this work? Any thoughts and help appreciated.
    Cheers
    Clean ALL the grease off first

  4. #4
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    Quote Originally Posted by cyclic View Post
    Clean ALL the grease off first
    Thatís the thing. The grease has soaked into the gyprock.
    Would cleaning with trisodium phosphate work? And then prime after
    it drys?

    Cheers

  5. #5
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    Is the plasterboard bare with no paint or primer?? If it is, there is a very good chance that the fat and grease has absorbed into the board and the best way to fix it is to replace that section with new stuff.
    If it has been sealed, just clean it with sugar soap and green scotchbrite.
    Never argue with idiots, they will drag you down to their level and beat you with experience.


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