Chimney Liner Insulation Required

National chimney offers a line of metal chimney liners that have been accepted by csia as safe for home use when properly installed.

Chimney liner insulation required.

Duraliner chimney liner requirements and tips. When installing a new liner for your heating appliance whether it is a furnace hot water heater wood burning insert or stove or existing fireplace consider insulating the liner. Cast in place chimney liners are lightweight cement like products that are installed inside the chimney forming a smooth seamless insulated passageway for the flue gasses. The blanket is made of a high density insulation material know as alkaline earth silicate.

There are two main types of chimney liner insulation. This will add to the diameter of the chimney liner so this route is not always practical. Duraliner ensures safe and efficient venting of heating appliances while protecting the masonry chimney from the damaging effects of flue gas. The most common type of chimney liners are clay tiles.

Insulation kit for 6in x 30ft liner. By keeping combustion gases hot until they leave the flue your insulated chimney liner will accumulate less moisture. It is the only factory insulated product with zero zero clearance for high heat wood burning appliances. It s typically required to insulate your new stainless steel liner for solid fuels according to ul 1777 if your chimney is non code conforming.

Insulation kit for 5in or 5 5in x 25ft liner. However building regulations do state that gases must be safely taken away from the building and by insulating your flexible flue liner within the chimney cavity will ensure that the gases will travel directly up from the stove and out through the chimney top. There is no building regulation that says you must insulate around a flexible flue liner within a chimney stack. No need to uncoil flex insulate a majority of the pipe or protect the insulation when installing.

Multiply this number by the chimney height in feet. The three primary types of chimney liners used are clay tile cast in place and metal flue liners. It is always a good idea to insulate your flexible chimney liner. Having 1 2 thick insulation will maintain your liner to the ul1777 standard.

Divide this number by 461. The most user friendly chimney liner insulation is the insulation blanket. Types of chimney liners. The insulation will enable the flue to heat up more quickly and this increases your draft reduces creosote making it easier to clean and makes your system more efficient safer.

Which one you choose largely depends on how old your home is and when you had the liner repaired or replaced last. The blanket will get wrapped around the chimney liner the entire length. If you are required to insulate your liner or just want the added benefits and performance you will want to measure the flue tile dimensions.