I have a studded bathroom with 90mm insulation between studs and 15mm insulation over the studs, which I intend to board and fully tile.
Want to fit 12mm Hardiebacker board in the shower area and 12mm moisture plasterboard on the rest of the walls, then tile.
Just called Hardiebacker and they said their boards should only be fitted direct to the studs, NOT have any insulation in between (even if only 15mm)? As they can't guarantee it'll hold the weight?
How can this be dealt with? Would the same issue not arise when plasterboarding over the 15mm insulation and tiling on top?
I would have thought long screws were the answer but now am a bit confused on which direction to go, any guidance?
Want to fit 12mm Hardiebacker board in the shower area and 12mm moisture plasterboard on the rest of the walls, then tile.
Just called Hardiebacker and they said their boards should only be fitted direct to the studs, NOT have any insulation in between (even if only 15mm)? As they can't guarantee it'll hold the weight?
How can this be dealt with? Would the same issue not arise when plasterboarding over the 15mm insulation and tiling on top?
I would have thought long screws were the answer but now am a bit confused on which direction to go, any guidance?