How is the drop between the existing and new done? Will you have to excavate it or is it just the difference between a suspended floor and non-suspended?
Existing ground floor is a concrete slab, ~400mm or two steps down to the garden which I really want to maintain. Think the new floor will be a slab too, though hopefully with some insulation and underfloor heating!
How is the drop between the existing and new done? Will you have to excavate it or is it just the difference between a suspended floor and non-suspended?