Tiling

What is the best way to seal new plasterboard for tiling?

Anonymous user 23/02/2024 - 3.08 PM

What is the best way to seal new plasterboard for tiling? I was once told to use diluted PVA and now know for certain that's the wrong answer as if it ever gets damp, the tiles just fall off. Ideally I'd like something which still allows the tiles to be removed without too much wall damage in the future as the tiles I've just taken off from this room were completely bonded to the plasterboard in such a way that there was no way to separate them (hence having to plasterboard the whole room). From what I'm reading, perhaps I should have used a different type of board in the shower area (over a bath). I'm wondering if I can fix this by applying a waterproof primer. It was previously tiled on to bare plasterboard in the wet areas with no issue for 20 years, but I'd prefer to prime it with something if that's best-practice. Should I use a standard acrylic primer or is there something better to use for tiling?

Anonymous user

Hi Nick, I normally use Mapei Primer G or a good quality SBR but either way if you try to remove tiles in the future it will likely mean reboarding. Best of luck, Rob

Answered10 April 2017

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Woodys Interiors

Rating: 5 out of 5

5/56 reviews

Doncaster

it won't matter if you do prime the boards before tilling if your going to change the bathroom in future the plasterboard will get damaged again a full replace will need to be done.

Answered10 April 2017

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Jag Interiors Services Ltd

Rating: 5 out of 5

5/555 reviews

Golders Green, London

Tanking is the best and you can get that from a tiling shop (Tanking Kit) to avoid wall damaging in future (while removing tiles) I would suggest installing 12mm WBP Plywood instead of plasterboard or Aqua boards (Hardy backer) both products must be tanked before tiling.

Answered10 April 2017

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