How to fill a gap between basement ceiling and brick wall
I live in a house built in 1880s in London that has a basement. Sometimes in the basement, some friends and I will have a chat and smoke a cigar.
Recently the next door neighbour said she could smell the cigar smoke!
I checked along the wall and there is a 1/2 gap between the basement ceiling and brick wall. The smoke must be going up there, and somehow into her living room (through the brick??!, and why not into my living room?)
I've tried putting expanding foam, but she said she could still smell it.
Have thought of nailing in some wood over the gap and sealing it.
Anyone have any suggestions? Thanks in advance!