Hi, new to the forum, thanks for such a great resource. I'm installing a supervent chimney and I'm a little confused. The installation instructions call out for heat shielding @ joists / rafters which makes sense. However they don't elaborate on the immediate location of the decorator ceiling support (in my case a flat ceiling). It doesn't seem to offer much joist protection. The instructions do indicate the attic heat sheild can be used w/ the ceiling support in the case of an attic immediately above but doesn't elaborate on my situation of a living area directly above. I called Selkirk and they said the ceiling support provides enough protection but I find it hard to believe as it is just 4 fastening straps from the looks of it. The joist shield is never called out in conjunction with the ceiling support. I'm sure one of you guys is a wiz with this system. Any help is much appreciate.