I'm bricking up an old fireplace and was wondering if getting a core drill and going down through the old hearth into the floorspace underneath would be ok as venting for the chimney stack (to avoid venting into the room)?
why?wilco - whatever you do don't do what vinn says
@Burnerman and @tireetim
Did you ever end up venting through the hearth in to the floorspace?
I am thinking of doing the same thing.
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