Tile Weights.

[EH TILING]

Hi everyone, just wondered if any of you could help me out. I am going to look at a job tomorrow which is a shower cubicle that needs tiling the client has told me that 2 walls are sand and cement render with skim and the other wall is plasterboard(not skimmed) Tiles are B&Q travertine but dont know size yet she just says they are big, heavy and rectangular. can anybody tell me the maximum weight per m2 for the different substrates so I can explain to the client why I will be recommending using backer board at least for the plasterboarded wall.
Thanks
Ed

 

[nybor62]

plaster board is about 30 kg, the render would have been fine if it was,nt skimmed , skimmed walls about 20 kg

 

[EH TILING]

Thanks alot for the info. much apppreciated.

Ed