Thanks all for your input. I had a second thought. Would the expanding foam be a good ideal to fix and fill the holes? It should fill the hole above the felt and hopefully stick to it. Also, it may even reach the crack of the tilt. I wonder, would this have any side effects, like trap water...
Hi,
Sometime ago, I noticed there were quite a few holds in the under layer (what's the proper name of it) of the roof, which caused the loft a bit damp.
The ceiling of the living rooms is still ok. I found the problem because I could hear a tiny dripping noise when there was a heavy...