Tiling behind log burner help

[Talcy]

At the planning stage of my log burner install. And need some advice regarding tiling behind the stove.
Free standing stove with tiles behind and granite hearth.

So currently the wall is dot and dabbed plasterboard onto breeze block wall I installed 10yrs ago.
So as the plasterboard is combustible I’m looking at a solution to make it non combustible behind the stove.
So I’m thinking chop out plasterboard behind stove and install cement board in its place as I will need to make up approx 30mm to meet up with plasterboard again.
Can I use board addy or tile addy to make up the difference in height then mechanical fix thro board to breeze blocks and tile straight onto of cement board. Was thinking of cement rendering it but my rendering isn’t the best so boarding will be easier.

Any other solution for my issue,


Any advice would be greatly appreciated.

 

[foxhole]

You can just add cement board to current wall, no need to chop out.(my heatas installer did mine)
Used slate walling behind mine (less than 3mm thick)

 

[Talcy]

Thanks for the reply.

So no need to remove plasterboard,
So I can mechanically fix cement board straight to plasterboard then tile on top. What could I use at the edges to blend height difference as I would be high on the edges with cement board and tile. Compared to plasterboard.

 

[foxhole]

Thanks for the reply.

So no need to remove plasterboard,
So I can mechanically fix cement board straight to plasterboard then tile on top. What could I use at the edges to blend height difference as I would be high on the edges with cement board and tile. Compared to plasterboard.

Depends on you style choice , but lots of metal tile beads available or other types of trim .

 

[OvertonPlumber]

I looked at brickslips and lime rendering but by far the cheapest and fastest thing to do is dot and dab cement board then sheet up and spray it all with vht spray paint make sure you have a respirator on though. My front edge is easy fill where it meets the cement board been in two years had no problems. Used an old granite worktop offcut for the hearth.

 

[Murdochcat]

Ask the HEATAS installer ?