Attic Insulation Around Fireplace Flue

A chimney liner or flue lining is a conduit that runs from a fireplace firebox to the top of a chimney.

Attic insulation around fireplace flue.

Insulating your chimney liner helps to. More often there s a similar problem. Because the pipe gets hot building codes usually require 1 inch of clearance from metal flues 2 inches from masonry chimneys to any combustible material including insulation. Although the cellulose insulation piled up around the gas flue in an attic in the photo above is an extreme example we find missing shields around gas flues in attics occasionally.

Insulation has been sprayed inside the shield eliminating the required air gap. 2 increase fireplace efficiency by funneling air in and out of a home. Fiberglass insulation is naturally fire resistant. 1 prevent problematic heat transfer from hot masonry to dry home frames in turn decreasing the risk of combustion.

As such it can be used to insulate a chimney. Remove the insulation between the joists where the flue is located to clear an area about 18 inches away from the flue on each side. Insulating around a fireplace prevents drafts. Most all insulation manufacturers recommend a 3 clearance to any heat producing device be maintained.

If the point where your chimney passes through your wall or roof is badly insulated there is a lot of heat passing through that area and. This makes it an ideal insulation material for use in areas that experience high temperatures. Fireplaces emit a comforting glow during cold winter nights but if they are poorly designed they may take more heat out of your house than they put into it. 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.

Apply a thick bead of high temperature caulk the flue on one side. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. The projects recommended in this guide can usually be completed in a day or two and will provide beneits for years to come.