Right,
Played with Google Sketch-up and it looks feasible. Oven is half hidden in the shed but with no shed roof changes, just the wall. This now complies with Building Regs (I believe).
Minuses I can see:
- the cooking surface is low, but then I wanted it to be visible from sitting position - the oven is in a covered sitting area - a useful sort of fireplace, where you can see tasty things not just embers.
- the passage between the oven and the raised flower-bed/planter is narrow - can be sorted out
- anything else?
In the attached you have a "finished" version, with shed wall taken out for clarity and the sides of the insulating enclosure not included inside the shed - they will be there and filled with perlite too. You will also see the "naked oven" version, for interest. I have downloaded a sensible pizza oven component model from Google Sketch-up site and edited it quite a bit.
Does this look sensible now?
Best wishes,
W.