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Twin Wall Flue

Our twin wall flue systems, are suitable for properties that lack an existing chimney stack. Constructed of double-skin stainless steel, in silver or black finish and diameters from 5 inch to 7 inch (125mm - 175mm), these insulated twin wall flue pipes can be installed on a wall & run through the ceiling and roof. Each section comes with locking bands and the push lock jointing system makes for easy installation. ...

Fully compliant with building regulations & HETAS approved, they facilitate efficient exhaust gas extraction for your wood burner, gas or multi-fuel stove or open fireplace.

We carry a full stock of other flue parts such as flashing kits, elbows, bends, cowls & adaptors and our twin wall flue is covered by a full 25 year warranty.

Twin Wall Insulated Flue System

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Choosing The Right Twin Wall Insulated Stove Pipe

Twin wall flue pipe, insulated chimney system ,consisting of insulated core, sandwiched between an inner layer of 316 stainless steel and an outer layer of 304 stainless steel.

Suitable for use with appliances that burn wood, gas, oil and low sulphur coal.

Where to use twin wall insulated flue systems

Our twin wall flue system is suitable for use in the following situations:

  • As an external flue system, where no external chimney stack exists
  • As an internal chimney system, where no chimney stack exists.

Twin wall flue installation

Our twin wall insulated flue consists of a simple push fit joint system. Sections push together to form a continuous length, secured with a locking band (included).

How to order 

Simply select the combination of lengths you require, in the correct diameter, to build your chimney:

We also stock adaptors, bends, firestops, brackets, supports and all components you may require.

Also in stock: Matt black finish twin wall flue

Order online or call us on 01143 583399.

Delivery information

Delivery to UK mainland is usually next day , and free on orders over £125 (ex Vat). For current information see our delivery information page.

Guarantee & warranty information

This product benefits from a 25 year manufacturers guarantee.

Building regulations

Design and installation of twin wall chimney flue systems is covered by Part J of the building regulations .

Vat no. 173389871- Company No. 08618240 - Registered Name: Chimney Supplies Ltd t/a NCS - Copyright © 2023-present National Chimney Supplies