This has been a debated topic in my office for a few days now.
Insulation around chimney in attic.
This makes it an ideal insulation material for use in areas that experience high temperatures.
A chimney flue passing through a second floor ceiling into an attic space.
As such it can be used to insulate a chimney.
I m just looking for some more ammunition for my arguement.
It is often installed in gaps around the chimney and flue to prevent airflow that can siphon the heat away from the interior of the building.
Insulating around these ixtures see page 2 2 attic air sealing and adding insulation are do it yourself projects if your attic is accessible and not too dificult to move around in.
The projects recommended in this guide can usually be completed in a day or two and will provide beneits for years to come.
Should it be insulated and or airsealed around the ceiling penetration.
Fiberglass insulation is naturally fire resistant.