"Bolted" wrote in message
...
Peter Taylor wrote:

"Kalico" wrote in message
...

Please can anyone tell me what they think the best board to use behind
the tiles of a shower?

Wedi board
http://www.wedi.co.uk/flash.htm
It's lighter and easier to cut and fix than Aquapanel. Might also be
cheaper.

Or similar, hardibacker, and several other trade names for
fibre-reinforced cement-faced foam board. Most useful property is that it
is waterproof, being made of plastic, rather than just water-resistant.
So with a tanking kit you can ensure that the shower is waterproof
irrespective of the integrity of the grout and tile cement. Aquapanel
will let the water through, it just won't disintegrate like plasterboard.

Hardibacker isn't foam based. It's fibre-reinforced cement, similar to
Aquapanel. It comes in 6 and 12mm thickness and sheet size is 900x1500mm.
Sheet weights are 12.5kg and 19kg, even heavier than Aquapanel.
http://www.jameshardieeu.com/assets/HB_BBACert.pdf

wedi board is foam based with cement faces and comes in various thickness
and sizes:
6, 10, 12.5, 20, 30, 40 & 50mm, A 2500 x 900 sheet of 12.5mm weighs only
7.65kg
http://www.wedi.co.uk/flash.htm