The Chimney Sweep Online Fireplace, Woodstove, Gas Stove and Barbecue Shop
" Where a wood-burning fireplace insert is vented
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Q: We're about to buy a new wood-burning fireplace insert, and our local dealer refuses to install it unless we buy a stainless steel liner that goes all the way out the top of the chimney. Do we really need to do this? If so, is it something we can do ourselves?You're required to reline a chimney for a woodstove or wood insert if the existing flue is oversized, unlined, or has a cracked or damaged liner. The big issue with fireplace insert installations is flue oversizing: most fireplace flues are WAY too big to efficiently vent the exhaust coming out of the 6" or 8" flue collars on today's inserts. Installing the liner eliminates flue oversizing violation, ensures the best possible insert performance, and eliminates the need to pull the insert out of the fireplace every time you clean the chimney. The job doesn't really require much mechanical aptitude, and many of our online customers choose to do it themselves.Our Forever Flex liner kit for fireplace insert installations consists of a rain cap, a top sealer plate, a caulk tube of silicone sealant, a length of flexible stainless steel pipe and an adapter to allow attachment of the flex to the flue collar on the insert. For pricing, click here.
Note: Each Code Authority chooses the standards that regulate appliance and chimney installation and usage in their jurisdiction, and may modify code specs as desired. The above-referenced specification is from the Washington Association of Building Officials Woodstove Installation Code Book, and may not reflect the code requirements in your area. Contact your Code Authority for local regulations.Manufacturers who submit an appliance to a recognized laboratory for safety testing may receive a specific listing for that appliance which may be accepted by your Code Authority in lieu of the standard code requirements. These listings are unique to each model, and can be found in the appliance's installation manual.
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