Strongest lightweight concrete blocks for tiling marble onto

[bmj1]

Any recommendations for the best lightweight concrete blocks for tiling marble onto ? I.e. that can take the weight - ideally on both sides - without reinforcement.

 

Would consider anything <=140mm wide

 

Thank you in advance

[Temp]

I've put 12mm travertine onto cement boards on timber stud walls. I think most blocks will be ok. Unless you're using something much thicker. See what others say.

[JohnMo]

2 hours ago, bmj1 said:

best lightweight concrete blocks for tiling marble onto

Why bother with lightweight?

[bmj1]

I'm worried about 20mm marble on both sides due to the load exceeding the rated amount for the blocks per m2.

 

Lightweight blocks is cheaper to construct and also less weight so reduces loads, otherwise might need to thicken up the steel frame

Edited 4 hours ago by bmj1

[JohnMo]

15 minutes ago, bmj1 said:

Lightweight blocks is cheaper to construct

Not sure how you have worked that out?

 

16 minutes ago, bmj1 said:

steel frame

Think you need to explain in more detail what you are trying to do. 

 

I have thick tiles on a stud wall and plasterboard - no steel in sight. So confused what you are or aren't doing

[saveasteading]

Any blocks will be capable.

When you say steel and reinforcement are you implying that the wall itself may need more support underneath?