Gas range to range hood clearance
The clearance between the top of the burning element and the bottom of the cabinets that are beside the range, is 18" sharp. So that appears to meet the building code. I had to remove the skirting under the cabinets to get to that 18" clearance, because with the skirts it was a couple of inches too low. There aren't any under the cabine light, so that wasn't a problem. The cabinet and counter actually looks better with those silly skirts removed anyway.
Next problem, and this is the skicky point. The clearance above the gas range. The way I'm interpreting the Ontario building code is that a combustible cabinet must be situated 30" above the range or higher, but can be as low as 24" if it is protected by a protective board (gipsum?) or whatnot - or - a metal range hood that stick out 125mm in front of that cabinet.
So, I didn't feel comfortable with that, and I discovered that the existing hood is too weak, so I ripped out the hood and also ripped out the cabinet above the range. I've installed nice not-combustible marble tiling going to the ceiling, and installed a metal range hood above the range, as high as I could get it. The exhaust out of the house is on the wall, and I've tried to get the wall mounted metal range hood to go as high as possible.
The clearance between the top of the burning elements and the bottom of the new hood is 27 inches. So that's well above the 24 inches, where there is talks about a hood protecting a cabinet, as discussed in the code.
But in my case there is no longer a cabinet.
So my question is, is it ok for the hood to be 27" above the range? The manual of the hood says 600 to 700 mm. So that's withing that range. The range's manual, however, says 30". But that's just a product, and the code is clear about inches, and doesn't say to refer to manuals or manufacturer instructions.
The gas mechanic say 30" in any case. I'm not buying it. I think the code says the minimum legal limit is 24", 30" for cabinets. What am I missing here?
The reason why I find the mechanic shady and fuzzy, is that he's telling me that so long as there are plastic parts inside the hood, it's combustible, and nothing combustible is to be below 30" period.
If that is true then countless of houses are not meeting code. I know a person that has a new range installed a few months ago, that has a cabinet above the range at about 30" above the range, but with a very tall range hood that is very thick, making the clearance only 22" !!! So, why would that under-the-cabinet hood be to code, and my non-cabinet wall mount one at 27" not be to code?
I'm very frustrated at this point and I don't know what to think... Is this mechanic a shady person that is looking for work? Is he working together with someone to create work that technically isn't necessary?
Also, the new hood has well above the required CFM, no issues there.
That person I know that had their range installation approved and installed (22" clearance to hood), that range has 6 burners, and is a much fancier one. I anticipate someone saying that the manufacturer's claim of clearance, is what the mechanic will go by, but there is no way, in my mind, that that manufacturer would say that 22" is ok, while mine says 30". It seems to me that what the manufacturer says, is adhered to by some mechanics and not others, and that ultimately it is the codes that determines what's really allowed.
I would love some opinions about this! It really sucks right now. All this effort to renovate the kitchen, and now I'm stuck with this new range ready to go in, but can't proceed.