Self levelling compound and heat

Leif

Is SLC heat resistant as per cement/mortar? I will be laying an inner hearth in my fireplace, and I want it to be level with the granite hearth that goes over the constructional hearth. The easiest way (?) to is put down a couple of inches of concrete, leave to dry a few weeks, then some SLC mixed with sand to get the flat surface. Also, is the concrete/SLC okay up to the edge of the granite, or does it need some thing to allow for expansion?

ormus

afaik its non combustible. which is what the regs require.
i wouldnt bother with any expansion gap for that situation.

Leif

ormus wrote: »

afaik its non combustible. which is what the regs require.
i wouldnt bother with any expansion gap for that situation.

Thanks. I thought it best to check, as I am not sure what goes into SLC.

tony6403

You should not really need SLC in this situation. It is not difficult on such a small job to "screed" the concrete with a straight piece of wood and then to trowel to get a smooth finish.

Leif

tony6403 wrote: »

You should not really need SLC in this situation. It is not difficult on such a small job to "screed" the concrete with a straight piece of wood and then to trowel to get a smooth finish.

It's more for getting it level rather than flat. I assume it needs to be level for the stove.

DVardysShadow

Leif wrote: »

It's more for getting it level rather than flat. I assume it needs to be level for the stove.

If the granite is level. then just take your level off that.

Concrete will self level too, if it is the correct consistency. I suggest a fine concrete, level off the granite, adding or taking away material to get the precise quantity and trowel off once it has begun to set.