Discuss Sealing plasterboard/moisture resistant board in the America Tile Forum / Advice Board area at TilersForums.com.

I once worked with a tiler. Who when tiling straight to plasterboard he would seal it as he said if any moisture got behind the tiles the paper could come off the front of the boards obviously effecting the tiles. Is this true? He used to seal it with I'm sure PVA, though I've heard this shouldn't be used. If it needs sealing what is best to use? Thanks
 

judge

TF
Arms
351
1,078
Thanks it's for a area that is plasterboarded with moisture resistant board but is having plastic paneling stuck too it. Do I still need to prime?
I don't install panelling but if I was going to I would probably give a few coats of 1 SBR/ 4 water on the boards first
 

Kevbos

Arms
35
443
London, UK
You don't need to seal plasterboard unless it's in wet areas where's then you should be tanking the plasterboard before tiling.i personally seal plasterboard in non wet areas all the time (SBR/water -1-4)
You shouldn't really tile with most tiles onto plasterboard full stop as it's not strong enough to hold the weight
 

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Sealing plasterboard/moisture resistant board
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