Help!: Help With Porcelain Tiles etc Please

[tbox]

Hi all, new here and I'm about to embark upon a project and require some assistance/advice please?

I've removed the old tiles from my bathroom and some of the old plaster has come off in some places right back to the brick. I obviously need to patch it back up and I was considering using plasterboard to do this. However, the original plaster is around 18mm deep and the plasterboard is only 12.5mm thick - which will leave approx 6mm difference.

After thinking about different ways of sorting this out, I thought about using 18mm plywood instead as it is around the same thickness as the original plasterboard. It would be screwed straight into the brick at regular intervals.

The tiles I am using are 600mm x 300mm procelain and so my question really is this:

Can I tile directly onto plywood on walls - providing I used the appropriate adhesive etc? Is there anything I need to do in particular to prepare the surface?

If this can't be done, can anyone offer any advice on an alternative way patch up the walls without re-plastering?

Many thanks

[nybor62]

a lot of the plaster will now be loose. the wall or walls were the brick work is showing. i would take it all of to the brickwork. and re-board with plaster board using dry wall adhesive. not knowing how flat the brick work is , you might struggle to get it flat with ply , which i would,nt use any way, hope this helps

[tbox]

Thanks for the quick reply.

Theoretically though, using a decent adhesive for porcelain tiles, would the 18mm plywood suffice as a substrate - providing of course that it is sercured very well to the brickwork?

[Scott]

Thanks for the quick reply.

Theoretically though, using a decent adhesive for porcelain tiles, would the 18mm plywood suffice as a substrate - providing of course that it is sercured very well to the brickwork?

No, ply wont be any good. Id stick with the advise you have been given, it wont take much to hack the other plaster off and providng you have some diy skill reboarding with drywall adhesive (dot and dab) is relativley straight forward

[tbox]

OK. Thanks for the advice guys - I'll take it and it's very much appreciated.

[nybor62]

OK. Thanks for the advice guys - I'll take it and it's very much appreciated.

your welcome

[peckers]

I would just like to add that before you dob and dab plasterboard back on you want to brush the walls down with a stiff brush to remove any dust etc and i would prime the bricks and joints with an sbr so as the adhesive gets a good key to the joint areas as well as the bricks

[Daz]

Don't forget to scrim tape the joints too.
Then prime the plaster board and use a flexible cement based addy to stick your tiles.

Good luck and don't forget the pics .