hearth cement/mortar

24 Nov 2004
Reaction score
United Kingdom
I am considering to refresh an existing woodburning/multifuel stove "hearth".
the stove flue exits the back of the stove unit and proceeds horizontally into the vertical wall of the room.
the wall in this area is some sort of fireproof board (something slightly different to plasterboard, appears to be fibreboard (too late to be asbestos but that sort of thing), on top of breezeblock which forms the chimney breast.
the hearth was backed in floor tiles before, which was fine just a bit naff.

I am considering to rebuild the hearth with local cut stone (which is a sedimentary mudstone, and - with careful selection of the stones, is suitable for use around a fire). the flue will go straight through this.

what sort of mortar should I use for this, bearing in mind that it will be up close to the flue which proibably gets up to 300 degrees C?

4sand:1cement + good dollop of PVA is good for holding these stones together in general but not sure of its performance under intense heat.
Sponsored Links
Sponsored Links
Please make arrangements for the flue to be swept.....did one today with no access so had to sweep from above.
65 years old, pirouretting about on the top of a chimney :eek: Bloody nuts.
John :)

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local