harry wrote in
:

On 21 July, 17:13, "AL_z" wrote:
I'm installing a new bathroom in my house. One of the jobs is to tile
the walls adjacent to the bath, as I'm going to install a shower
attachment.

One of the walls seems to be made of thin (8mm or 10mm?)
plasterboard. On that wall, I'll be fixing a shower attachment
holder. Is it OK to stick the tiles directly onto the plasterboard?
Or should I face the plasterboard with say chipboard first, to
increase the rigidity and strength?

Also, should I use a special waterproof adhesive and waterproof grout
with the tiles, or is the regular stuff considered OK for shower
areas?

The tiles I bought are 300 x 250mm granite effect tiles which are
almost twice as thick as the average small 150mm square wall tiles.
So they do have a lot of rigidity and strength of theor own.

Thanks...

Al

Depends on your showering habits. Years ago, no-one worried about it,
the tiles would be stuck straight on and I remember few problems.
Nowadays there is special plasterboard for damp areas, (the green
stuff). Also special adhesives and grouts too. Depends really how
good a job you want to make of it. The main area of leakage is where
the tiles meet the shower tray, so do a good job round there.
If you have a power shower, or poor area ventilation it may be a good
idea to put the water resistant plasterboard in. Lot of work
otherwise.


Thanks to everyone for the replies. After considering the products and
methods suggested, I'm now thinking of using WBP or similar, fixed over the
existing studwork, (a) because I can srew into it (when fixing the shower
head holder and the hinged shower panel. It would also give extra rigidity
to the cheapo studwork. The wall in question is 5ft wide by 7ft tall. Just
to be safe, I am thinking of painting the WBP with soma kind of waterproof
paint, as I gather that WBP ply is not 100% waterproof - especially the
surface ply which I gather isn't primed, as supplied. I have a spare tin of
exterior masonry paint. Would that do? Or should I fork out for a bitumen-
based tanking paint? Will tile adhesive stick to this? Can anyone recommend
a truly waterproof and slightly flexible tile adhesive?

Al.