Air Seal Attic Chimney
Once the air seal was accomplished jerome installed a roxul mineral woolinsulation barrier around the chimney.
Air seal attic chimney. Seal air leaks around fireplace chimneys furnaces and gas fired water heater vents with fire resistant materials such as sheet metal or sheetrock and furnace cement caulk. If you do seal air leaks around flues make sure that you use heat resistant caulk. The opening around a furnace or water heater flue is a major source of warm air into the attic photo 5. Attics are often under insulated and under sealed leading to wasted energy and wasted spend by the homeowners.
Measure the four sides of the chimney where it goes through the ceiling framing and add up the. I am installing the chimney using a square cathedral support which doubles as an attic radiation shield. Foam or caulk small gaps in your attic. This isolated the masonry from an r 60 blanket of cellulose insulation that was blown in place after all the airsealing measures were implemented.
Once the metal is in place. Attic air sealing is the priority your focus should be on the attic when you begin air sealing. Hello gba community i have a question about air sealing an icc excel chimney servicing a woodstove in manitoba canada. Keep the fireplace flue damper tightly closed when not in use.
Of clearance from class b flues 2 in. Access the attic through a crawl space in the ceiling using a stepladder or use or the attic stairs. Watch and see how to air seal attic penetrations to improve energy efficiency and prevent warm air rising inside a home from entering the attic space. During the construction of your home they drill and cut holes through the walls to run these pipes and wires.
Because the pipe gets hot building codes require 1 in. Imagine that you have a small boat and steered it into a cluster of jagged rocks. From masonry chimneys to any combustible material including insulation. I have already purchased the support and chimney components and am ready to install the chimney.
The dirt comes from dusty air leaking into your attic.