Bathroom floor tiling

[mccben9]

Hiya
I'm planning on tiling my bathroom floor. It is currently lino over plywood (tongue and groove underneath) my plan is to:
Rip up the lino/plywood
Place down some 6mm backboards for the floor with adhesive
Add tape over the joints
Screw down
Tile over

Questions are:
Does this sound right?
What is a good backer board to use? I want good quality but I am on a budget so have been looking at the prowarm ones - can anyone recommend?

I also need to do the walls. Any tips on this would be great. Can you tile straight over the removed tiles depending on what's behind?

Thank you

 

[simplesteve]

Having tiled loads of bathroom floors, I would say you're on the right path. Get the Lino and ply up, then go over it all with your bare hands to make sure you havn't missed any nails/screws.
Then coat the floorboards with a SBR primer and allow to dry.
I would only ever use 'Hardi' backer boards - a 6mm notch Trowel with Rapidset adhesive will let you get 2or 3 down at a time, before using Screwfix Turbogold ( the best sharp point ) screws to 'screw as you go'. The boards are marked with the correct spacing for the screws.
Don't buy cheaper boards, is it with saving 2 or 3 quid a board on something you can't fix after its done ?
I've never used the joining tape, just scraped a very thin bit of the aforementioned adhesive over the joins with the back of the trowel.

Re the wall :- that all depends on what you find after taking the tiles off. 9/10 times for us guys it's quicker, cheaper and you get a better surface to work on, to just rip the tiles AND the plasterboard off the wall and re-sheet with new plasterboard.

P.S. A lot of customers later regret NOT putting in underfloor heating mat when they had the chance !

 

[mccben9]

That's really helpful thank you. Ad for the walls, I've just taken off a couple of the tiles to see what's behind and it looks so far to just be plaster and in ok condition. If I smooth it down, will it be ok to tile directly onto or does it need some prep work too?