I am putting in a woodburner in an existing fireplace which I have opened up back to the original brick opening.
The constructional hearth is soft brick bedded in sand/weak mortar, and is very damp, and I am going to replace this with concrete. It is an old house (1800) with no DPC, and I want to limit the damp. Can I use viscuin to do this under the concrete as normal, or will the heat melt it/render it useless? I am putting a decorative stone hearth on top of the concrete one.
If this won't work, any alternative suggestions please?
Many thanks for your thoughts.
The constructional hearth is soft brick bedded in sand/weak mortar, and is very damp, and I am going to replace this with concrete. It is an old house (1800) with no DPC, and I want to limit the damp. Can I use viscuin to do this under the concrete as normal, or will the heat melt it/render it useless? I am putting a decorative stone hearth on top of the concrete one.
If this won't work, any alternative suggestions please?
Many thanks for your thoughts.
