- Joined
- 24 Nov 2004
- Messages
- 420
- Reaction score
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- Country
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.
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.
Bloody nuts.
