Lightest weight backer boards

[acaciaguy]

hello all

I have a job where the walls are double thick plasterboard (both 18mm) on a stud wall ( between two flats to meet fire and sound regs etc). I don’t want to add the weight of a cement backer board (like nmp or hardie) on top of that.

What is the he lightest board out there? Wedi ? Jacko?

Tiles plus addy will be 38 kg a meter.

Many thanks

 

[J Sid]

don't know, but would of thought not much difference in the two

 

[acaciaguy]

Thank you for the reply

 

[Time's Ran Out]

Both light and will take ++kg weights.

 

[Flintstone]

There all very light and you could use 6mm in that situation on a bed of adhesive with fixings

 

[acaciaguy]

Thank you for that. Appreciated.

 

[Adrian mcc]

Stick extra screws into the framing I’m guessing it’s tin studding. Working on a site at the minute the boarders are on price and like to save on screws

 

[One Day]

Kerdi board is lightest. No cement face.