I'm not sure if this should come under the building or flooring section?
My perimeter to floor ratio is 2.1. That's off the scale on the local authority guides that you see, meaning a huge amount of insulation would be required to achieve an adequate thermal standard.
As this is down to the thermal bridge that's around the perimeter of the wall - where the concrete slab meets the inner leaf of the cavity wall - is there a way I can construct the floor upside down:
25mm chipboard
100mm (say) kingspan
concrete
DPC
hardcore
earth
An immediate problem I can see is that the DPC is vulnerable to getting battered by the insulation and chipboard floating around, but I'm just thinking out loud really.
The room is a 4M x 1.8M porch, probably with a stud wall separating it into 33% / 66% sections.
Gary
My perimeter to floor ratio is 2.1. That's off the scale on the local authority guides that you see, meaning a huge amount of insulation would be required to achieve an adequate thermal standard.
As this is down to the thermal bridge that's around the perimeter of the wall - where the concrete slab meets the inner leaf of the cavity wall - is there a way I can construct the floor upside down:
25mm chipboard
100mm (say) kingspan
concrete
DPC
hardcore
earth
An immediate problem I can see is that the DPC is vulnerable to getting battered by the insulation and chipboard floating around, but I'm just thinking out loud really.
The room is a 4M x 1.8M porch, probably with a stud wall separating it into 33% / 66% sections.
Gary