Hi
Apologies for the quality of the sketch but in some places the outside ground level of my extension will be just above finished floor level. There are no door openings in this area. I'm having 100mm slab on top of 100mm insulation.
I'm wondering if what I've tried to draw here is vaguely feasible? I've come up with it through a lot of trawling through similar posts! Really appreciate any advice as ever. I've already poured mass fill foundations to 450mm / 2 block courses below dpc level.
PS I think I might need to fill the cavity (lean mix) higher than I've shown in the pic, if I'm on the right track at all...
Green line on the pic is dpm (and dpc)
Cheers
John
Apologies for the quality of the sketch but in some places the outside ground level of my extension will be just above finished floor level. There are no door openings in this area. I'm having 100mm slab on top of 100mm insulation.
I'm wondering if what I've tried to draw here is vaguely feasible? I've come up with it through a lot of trawling through similar posts! Really appreciate any advice as ever. I've already poured mass fill foundations to 450mm / 2 block courses below dpc level.
PS I think I might need to fill the cavity (lean mix) higher than I've shown in the pic, if I'm on the right track at all...
Green line on the pic is dpm (and dpc)
Cheers
John