Using primer in a wet area

[mrbg07546]

Hi.

I am tiling a bathroom on newley skimmed wall as (brick). I will be using a tile which weighs 23.7kg

1) given the tile is over the 20kg weight limit for skim. I will be using primer. What Weber brand of primer should I use. Weber said PR360. But I’m not sure this is a Arcylic primer (which is better?). Such as AD250

3) I am gonna tank the shower area (with some tanking primer. Do I put this before or after the primer above? Any suggestions on products.

 

[JaimieH]

You are still exceeding the safe limit for skimmed gypsum plaster. Primers will not increase the weight carrying capacity of the wall, your easiest option will be to overboard with a thin tile backer board. Don't forget that in addition to the 23.7kg weight of your tiles you will also have up to 4kg sqm of adhesive.