Twin wall flue
Twin wall flue
If you are installing a new heating appliance, such as a woodstove, gas coal-effect fire or an oil boiler, you will probably need a isolated flue system, certainly if you do not have a brick chimney stack. Twin wall systems can be constructed to produce a safe chimney system for your appliance.
Twin wall flue pipes are suitable for the creation of both indoor and outdoor flues and they can be used to pass through roofs and floors. Our double wall flues are suitable for use with wood, coal, gas and oil appliances. Our Twin wall flue system is also perfect for biomass boiler installations.
The outside diameter of twin wall flue pipes is 60 mm more than the inside diameter. So a 150 mm mm pipe has an outer diameter of 210 mm.
Dinak DW is a class 1 isolated flue system manufactured in Europe. This double wall flue is suitable for use with wood, coal, gas and oil appliances - Stainless steel - The Dinak Twin wall flue pipe is also perfect for biomass boiler installations.
- Push fit jointing system - secures using locking band
- 10 year warranty
- 30mm of insulation
- Internal joint system prevents moisture draw through
- HETAS listed for use on solid fuel applications
Dinak double wall flue stainless and black powder coated systems are fully interchangeable.
Twin wall flue pipe is a metal tube (flue) insulated with approx. an inch of insulation (two layers of stainless steel with insulation between). The insulation is necessary to keep the gases hot. Were you to use non-insulated flue pipe for the whole of your chimney, then the gases would likely cool too much and start to slow rather than rise with this causing the smoke underneath to “dam”. This might cause the smoke below to exit out of the vents in your stove instead of the top of your chimney.
Cooling gases also form condensation which forms on the inner walls of the flue and runs down into the stove (mixed with soot it is a disgusting brown liquid).
We have a wide selection of Insulated Flue Systems in 3,4, 5, 6, 7 and 8 inch pipes, including twin wall insulated flue pipes, cowls, flashing and bends to ensure you can buisl a complete twinwall flue system.
All our double walled flues are fully approved by HETAS, and have the EN-1856-1 test certificate.
We can help you to design your system. You can either use our online twinwall calculator. Or you can send us a simple diagram, with dimensions to email@example.com. A member of our trained technical team will answer with a complete quote for your double wall flue system.