After fitting together a stove pipe, it is important to seal it properly, in order to ensure that it is protected against smoke being blown back down the chimney.Sealing a stove pipe should be done before it is used for the first time, in order to protect users against smoke and … Thanks . If you have a visible leak in the double wall pipe then flue gasses are getting in between the layers for some reason. For a heater. And it leaks at the flue connection. Sealing flue joints using fire cement or fireproof webbing If you are NOT fitting a liner but installing a clip-together chimney system (twin-wall) then you will secure your twin-wall adaptor to your vitreous (or to your stove if directly attached) using fire cement or fireproof webbing . 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. Each joint in the assembly must be fastened with at least three screws. Use black painted flue pipes. 6-, 7-, and 8-inch diameter flue pipes must be at least 24 gauge in thickness. Y. yamahamark. From this pipe, you can connect to either flexible flue liner if going directly through an existing chimner, or to twin wall flue pipe if you need to pass through a wall or ceiling or route your flue pipe externally. How should I seal the flue pipe to the stove? Recommended for sealing the firebox assembly and venting of direct-vent balanced flue. For gas / wood fireplaces, pellet and corn stoves. Built a smoker wood stove for outside use and new we're trying to use it inside. Maximum temperature range for use: 1050° F/566°C. I need to seal the whole around the flue pipe, so can i use expanding foam or does it have to be mortar? The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. Which it isn't. The outer layer of double wall isn't really intended to contain exhaust, it's more for heat shield / clearance, I believe. Mar 28, 2013 #2 Just use sand a d cement its what I always use . So it needs to be smoke tight. Good up to 600 degrees F. when applied to a cooled-down pipe; heat will seal the tape to the metal pipe as the temperature climbs. D. Destroyer2813. Pellet stoves come in a variety of sizes. Gas Engineer. Mar 28, 2013 #3 It leaks along both sides of the top which just sits down on the sides. Applying caulk around the vent pipe creates a barrier that prevents heat loss and cold air entry. Note: Some building inspectors discourage taping up furnace, clothes dryer, and water heater flue joints, so check your local building codes before using this tape, especially when selling your home. Plumber. The end of one flue pipe is crimped and fitted into the end of the next (uncrimped) pipe. Messages 3,407. Product cures with heat from the appliance. Venting pipes carry harmful gases including carbon monoxide that require an outside vent to keep the occupants of the home safe. Flue pipe joints should overlap 30 mm (1 1/4 in.) Single-wall sheetmetal flue pipes are joined without sealants. Each size designates the amount of heat the stove will provide. Furnace Flues Require Special Sealing Techniques. You need at least one length of stove pipe to connect directly to your log burner's flue outlet. This is not an adhesive. Using Vitcas products to seal the flue pipes to the stove Filling the gap with thermal rope and using black fire cement Read our FAQ now! Galvanized flue pipes must not be used because the coatings vaporize at high temperatures and release dangerous gases.
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