Planning to move a bathroom in our basement.
The ground under the slab has sunk, about 100 mm. The slab thickness is about 180 mm.
I don't want to break up the entire area, just channels where the drainage requires and the upper 80 mm of the affected area, about 14 sqm. I then plan to restore everything with waterborne underfloor heating + concrete on the 80 mm that is freed up.
Construction as follows. See image 001 from the construction documents from 1966, the detail is not quite accurate but the principle is the same.
My considerations:
If I break up parts of the slab, can I somehow insulate under the remaining slab? Insert foam plastic or maybe spread out leca beads. Is it necessary, does it make any difference?
See sketch 002
The existing vent is located about 2m from the new toilet. It will be connected but is the distance problematic in any way? I can also add that this vent already ventilates a small WC, just as it has been since the house was built.
The ground under the slab has sunk, about 100 mm. The slab thickness is about 180 mm.
I don't want to break up the entire area, just channels where the drainage requires and the upper 80 mm of the affected area, about 14 sqm. I then plan to restore everything with waterborne underfloor heating + concrete on the 80 mm that is freed up.
Construction as follows. See image 001 from the construction documents from 1966, the detail is not quite accurate but the principle is the same.
My considerations:
If I break up parts of the slab, can I somehow insulate under the remaining slab? Insert foam plastic or maybe spread out leca beads. Is it necessary, does it make any difference?
See sketch 002
The existing vent is located about 2m from the new toilet. It will be connected but is the distance problematic in any way? I can also add that this vent already ventilates a small WC, just as it has been since the house was built.
