Insulation Around Metal Chimney

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.

Insulation around metal chimney.

Airflow through the 2 airspace or just 2 clearance to combustibles. As such it can be used to insulate a chimney. Finally prepare for adding insulation foam or additional fiberglass batts by installing a second piece of vertical sheet metal that provides a 2 inch airspace around and parallel to the chimney. Those clearance spacings are normally found in at least two locations.

Notes to the metal chimney fire clearance table above. The flue is the metal tubing that extends up from the top of your gas furnace or water heater that carries the carbon monoxide gas from the heating unit to your. Yes if the particular metal chimney system was not tested with an airtight firestop attic insulation shield. Place the liner in the middle of the insulation material and begin wrapping the liner allowing for at least 1 inch in overlap along the seam.

This makes it an ideal insulation material for use in areas that experience high temperatures. And creating hot spots in the metal exterior shell if its airflow around the chimney wouldn t airsealing be a bad thing for the chimney in this case. How to insulate a metal flue pipe. The installation instructions for the specific flue vent connector or metal.

Leaving more than around 1 11 2 inches in overlap can cause some difficulties when attempting to install the liner.