Originally Posted by
brian schmitt
the installation instructions for these chimnies usually require a certain clearance to combustibles ergo the guards. this is where the require part is a code issue.
The installation instructions also (almost always if not "always") require a firestop at a ceiling level too, which makes that also a code issue.
Another thing I was pointing out was that, *as installed* no insulation stop is required because *no insulation can be placed around that chimney/vent*, this is because there is no firestop installed.
That means all the insulation fell down on top of the firebox - which is also a code issue as no insulation is (as I recall) allowed on top of the firebox either.