Looking for some advice.
See the sketch above. The wall behind the range would be vertical for about 24", then begin to curve inward, a "barrel" shape, with the top of the curve about 48" above the range burners and overhanging those burners. The curve will lead to the vent hood.
If the wall is wood framing, covered with two layers of Durock (concrete board), covered with ceramic tile, would that pose a fire hazard or be a code violation, do you think?
The range's installation instructions say that combustible material directly above the range must be 30" from the cooking surface, and non-combustible material must be 24".
(The ducting for the vent runs in the pushed-out area of the wall.)