thank you guys
but what if i put a lot more dabbing of adhesive on the walls ?
you shouldnt be dabbing tile adhesive, it is applied in a thin spread then combed up! doing it that way keeps the weight to 3-4 kg per meter!

and use plaster boards with Polystyrene backing ?
if you use insulated plasterboard this shoud be mechanically fixed as well as dot and dabbed!

or batten the walls and screw plaster boards ?
if you batten then use a kingspan insulation then use hardi backerboard as that hold 50kg per meter of tile!

i realy need to know if i can tile on plaster boards safely
you can tile straight onto plasterboard as long as your tiles and adhesive and grout DO NOT EXCEED 30KG per meter

just remember your tiling is only safe as long as the substrate is secure fixed!


thank you paul