Help pls!

[AJL Plumbing]

Hi All
As my title says, im a plumber, not a tiler, if the plumbers forum is anything to go by you guys and girls should be the people to ask the following.
I am just about to tile my own bathroom, i dont do any tiling work for customers as i solely do plumbing, but want to tile my own bathroom as so far i have refurbed the whole house, i have tiled before, but not this much!

The room is quite small, its 3m long, 1.5 wide and standard height,
There is a bath, and sepaerate shower enclosure,
The walls are plasterd plaster board that has been painted ( i know this will need keying up a with a da?)
There are two walls that are 12mm ply lined, above the bath and one side of the shower, i know ply isnt ideal, but from a plumbing point of view it is the easist materail to fix fittings to (like shower screens)
We havnt decided the tiles yet, as the mrs and i cant agree! but would like to go with a large tile
These are my questions!
Wall tiling
1) what type of paintable tanking would you use to tank the shower, one side ply, one side plaster
2) what sealer would need to go on the walls plaster and ply prior to laying the tiles
3)what would be the best adhesive to use on the wood and plaster
4)what grout for the above

floor tiling
1) its a chipboard floor, i have joisted and strengthened and was going to lay 6mm ply down over the top screwed at 300mm centres
2) what sealer would need to go this first, and again what adhesive and grout

Hope all the above makes sense, sorry if it seems silly questions or wrong methods, want to do it once, and do it right, even if it does have ply! and no i havnt pva'd it after looking on here!

Kind Regards

Andrew

[poynton phil]

6MM Ply on the floor is not any good, use hardie backer, and i dont think the 12mm ply is good enough on the walls either.

[AJL Plumbing]

great prompt feedback thanks guys, what depth is the hardie backer board, i dont want to use a stepladder to get over the lip into the bathroom thats why i thought 6mm ply was the norm?! BUt your the tilers!

[Sir Ramic]

6mm ply is a big no no. Hardibacker and the likes are 6mm. Use SPF adhesive and screws to fix. Or if using NoMorePly backer boards their mega strength adhesive and screws.

[AJL Plumbing]

Ok so its hardibacker 6mm glued and screwed for the floor, will the adhesives mentioned in the first reply still be ok for this, also a dumb question proberley but is it wall then floor tiles or vice versa?!

thanks and regards

Andrew

[whitebeam]

Yes spf for the hardie, wall first but if you are following the grout lines from floor to wall then the floor first.

[jwatson]

do the gaffer tape test on the painted walls too. make sure the paint has a good bond with the plaster or else the belt sander will need putting to use.

[Mike]

i would plasterboard/backerboard over the ply on the walls as ply is not a good substrate to tile onto. also it is advisable to tank the shower walls before tiling

[AJL Plumbing]

Ok, it seems that the first reply to this thread has gone??! It had which adhesives and tanking and primer i needed and grout, i will use the hardibacker board for the floor, sand the walls, cant change the ply now as to late, is there someone that could repost the first post, or advice on the materials needed again, thanks in advance
Andrew

[Sir Ramic]

http://www.mapei.com/public/GB/pdf/S...erproofing.pdf
MAPEI - PDF Flip Pages