When lying on my back, and looking up into the fireplace (Damper closed), at the section where the throat of the chimney meets the brick facade inside the room ( I think its called the Lintel) there is no mortar along the whole length of the lintel area. I do feel cold air coming down, but my question is, should this area be closed up with mortar, or should it be mortar-less. I am hoping this is the answer to my smoke problem.
Any information would greatly be appreciated.
Thanks in advance
Any information would greatly be appreciated.
Thanks in advance