Sandwich in concrete slab?

[norfre]

Did this thread die of shock?
If you've read the posts up to this point, you understand the question in the first post better...
It doesn't sound optimal (understatement) to have a sill with concrete on 3 sides.

Do you have any suggestions on what I should do?

 

[Jarlingar]

What is already moisture-damaged must be removed.
If you want to keep the walls, the insulation should be placed on the outside.
Minimum 200mm isodrän or equivalent.

 

[Jarlingar]

Above ground, you can keep the insulation on the inside.

 

[blackarrow]

Well, I'm no expert, but where there was 16% moisture it's acceptable, it's failed at 17%, where there was 22% it's failed.
I would have made some more holes and measurements!
Is it only "down there" that's moist or are the studs moist further up?

If there is any thought behind this "air gap" it would be to reduce the thermal bridge between the floor and the wall.
It's just the "basement wall" that's on this sill, right? Can't you just fill the "hole" with polystyrene that can withstand high pressure? Or possibly insulating concrete, but that only insulates half as well as polystyrene.

 

[norfre]

Yes, the problem is that a gap forms between the slab and the leca wall when the framed walls are removed. I've considered that this gap can either be filled with concrete, or a new inner wall with leca can be built inside the existing leca wall. I'm not sure which is best?

Externally, I will insulate with isodrän/pordrän when I'm going to dig in the garden later this fall.