As such it can be used to insulate a chimney.
Insulation around chimney in attic.
8 cut a piece of flashing to measure the circumference of the flue plus 6 inches.
Apply a thick bead of the high temperature caulk around the joint where the flue enters the attic.
This has been a debated topic in my office for a few days now.
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.
I m just looking for some more ammunition for my arguement.
A chimney flue passing through a second floor ceiling into an attic space.
Should it be insulated and or airsealed around the ceiling penetration.
This makes it an ideal insulation material for use in areas that experience high temperatures.
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.