What to tile onto

[chr15b]

Going to help a friend next week, we've discovered the plaster under the old tiles is awful and going to come off in large chucks with the tiles. I suspect we're going to have to take most of it off.

The room is a bathroom and the tiles are mostly in the wet areas round the bath, sink and toilet.

When I did my own, I battened the wall and fitted aqua panel, but what other options are there. I figured plasterboard via dab n dot with a skim coating.

It's been suggested that tiling directly onto plasterboard is possible, though this sounds dodgy to me as any moisture that accidentally gets through is going to soak into the board.

Another option that's been mentioned via a 3rd party is using ply, again this seams a bit strange, though possibly better with water than plasterboard but how is this used, is it fitted directly to the brick?

Cheers
Chris

[rsv gone!]

An alternative is wedi-board.

[993AL]

Or Hardibacker http://www.pureadhesion.co.uk/tile-backer-boards/h...

[chr15b]

Sorry, should have been more specific.. Options other than cement based boards.

[Spudler]

Moisture resistant (green) plasterboard is perfectly adequate for the job.
As long as the tiling is a quality install you won't have a problem re water ingress.

[bod27]

You could also use a tanking kit (rubber paint) on std platerboard, Lastogum and Bal do one , they are about £80.

[B17NNS]

Hack off any blown plaster, fill with bonding, tile.

[Spudler]

B17NNS said:

Hack off any blown plaster, fill with bonding, tile.

DO NOT do this ^^^^

[B17NNS]

Spudler said:

DO NOT do this ^^^^

Wet rooms aside, it's a perfectly acceptable solution providing subsequent tiling is done to an acceptable standard using appropriate materials.

As is plain old plasterboard for that matter. The point of the tile, waterproof adhesive/grout and sealant is to create a waterproof barrier to any background material.

Gypsum, cement based boards, whatever. If they are getting wet you've messed up with the tile.

Edited by B17NNS on Saturday 23 February 12:01

[Spudler]

I agree tiling on plasterboard is perfectly acceptable, tiling on bonding is not.
No tiler worth their salt would carry out work in this way.
You tile how you see fit but its best not to advise a practice that not an industry standard.

[chr15b]

So, as long as the tiling and grouting is up to scratch, its perfectly acceptable to tile direct onto plasterboard, recommending the green water resistant variety..?

Cheers for all the advice

[Spudler]

chr15b said:

So, as long as the tiling and grouting is up to scratch, its perfectly acceptable to tile direct onto plasterboard, recommending the green water resistant variety..?

Cheers for all the advice

No ifs, buts or maybes....it's 100% accepted / recommended.

[chr15b]

Spudler said:

chr15b said:

So, as long as the tiling and grouting is up to scratch, its perfectly acceptable to tile direct onto plasterboard, recommending the green water resistant variety..?

Cheers for all the advice

No ifs, buts or maybes....it's 100% accepted / recommended.

Thanks all, dont know why but i'd got the idea in my head that tiling straight onto the paper backing of plasterboard was a bad idea..

[Radders360]

Just make sure you use a good quality adhesive that is flexible, Bal or Ardex are the only ones I use. Also make sure the grout has a flex agent in it to and again Bal or Ardex. Imperative to make sure you do a good job with the silicon. Little tip for you is to use wet wipes with a sealant moulding tool. Gives a very good smooth finish. Here's a link for the tool. http://www.bathroom-trends.co.uk/acatalog/Fugi-Kit...

[Muncher]

Isn't grout actually permeable therefore some degree of waterproofing is needed?