I am living in a multi-family house which happens to be an old building. The person living under my room is a chain smoker. Unfortunately, the smoke is smellable in my room, even if I close the window and the doors. The only direct connection beween our flats is the heating pipe passage way.
Now the passage way was proofed with silicone. I wanted to renew the silicon because I thought this might help.
This is how it looked with silicone:
This is how it looks after removing it:
What is this stuff inside that looks like loose wool? Should I replace it with something before I put silicone on it? Any ideas how can improve the proofing so that almost no smoke will pass through?
Edit: Heres a requested picture of the floor:
Best Answer
It will very hard to prevent the odor of tobacco smoke from getting into your flat. I would not attempt to renew with that seal, you could make it worse. That wool could be anything from steel wool to copper wool to other fibers that you definitely don't want to do anything to. You don't want to disrupt it.
You could put some duct tape over the existing seal, but even that could cause problems. If any tape you placed there were later pulled off, it could pull apart the existing seal.