Millboard and metal sheet, under wall cabinets over range?
Inspector failed my new gas range install because I've got wood cabinets (no hood or anything) 28" over the cooktop and not the required 30". Whoops--I got so hung up making sure the gas install was great that I missed the simple clearance req. Live and learn.
Anyway, I've got 0.025" aluminum sheeting, but apparently that needs to be mounted to millboard and then the millboard mounted to the underside of the cabinets. I've never heard of the stuff and the guys all over Lowes looked at me like I had two heads when I asked.
Where can I find this stuff? Is it an old name for something like cement board? My google fu turns up that it used to have asbestos, but now some companies tout theirs as asbestos free...