Installation of a firebox in a very old stone fireplace that is on an external stone wall and is very damp.
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Do I install a vapour barrier first and then rock wool or ceramic wool with aluminium foil in order to insulate the interior of the existing fireplace? would I use similar techniques to the techniques of shower construction e.g.. backboard etc?
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Replies
Marina,
Are you building a traditional firebox out of fire bricks and mortar? Or are you installing a manufactured sheet-metal firebox?
If you are installing a manufactured component, you need to follow the instructions provided by the manufacturer.