Hello there
I should have thought about this earlier but....
anyway, I've done an extension, there's about a 10 cm gap between the foundation and the floor joist that I need to insulate in a smart way.
Does anyone have any tips?
Trying to fit a narrower joist and attaching it further down could work with a bit of fixing and tweaking.
Attaching sill paper to the joist which is then placed against the foundation (some adhesive to hold the paper)? and then filling it with a suitable material, leca balls?
Do you think that could work?
