Air Space Along Side Of Chimney In Attic

Can insulation be put next to the matel chimney in the attic area for a gsa furnace.

Air space along side of chimney in attic. Measure the four sides of the chimney where it goes through the ceiling framing and add up the. The space between the center and outer walls circulate air for more cooling. If your chimney runs through the interior of the house look in the attic to see if it is centered in its framed opening. Insulated chimneys differ further from air cooled systems in their structure.

For exterior chimneys a 1 inch minimum air space must be maintained between the chimney and combustibles. Potentially improving the efficiency of the house overall. I m wondering about the efficacy of insulating the outside of a masonry chimney. Keeping the chimney from sucking all of the heat out of this area and 2.

Also the 2 inch air gap that i recommend is generous for some forms of insulated metal chimney which only require a 1 inch airspace. Cut two pieces of sheet metal to cover the chase opening. How to air seal a metal chimney or flue vent pipe option 1 air seal at the bottom of the framing. Allow 1 inch of overlap.

The attic loft will be used as semi conditioned living space and i am concerned about 1. Bill some metal chimneys require an air space while others are rated for zero clearance. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving into the attic. Three wall chimney systems use a combination of air cooled and insulating components.

What kind of flue is this. Fasten the sheet metal to the framing and seal all edges and seams with fire rated caulk. If it s a b vent typically you need to leave a 1 clearance around the vent take a look at the listed clearance for your particular. Combustible material shall be permitted to abut the masonry chimney walls provided there is a minimum of 12 inches to the inside surface of the flue liner or in the case of a fireplace 12 inches from the inside surface of the firebox.

I ve been thinking that i might be able to insulate around the chimney in the loft space. Unless you re sure of the type of chimney you ve got use a 2. If it s pressing against the opening to one side or another that means.