1. 95mm - 135mm Twin Wall Flat Adjustable Wall Support in Stainless Steel - 150mm

    Key Features:

    Used to connect twin wall flue pipe to the wall. The bracket can be placed anywhere on a length of pipe, except for on the joints. The support allows the pipe to be fitted 95mm - 135mm away from the wall. Learn More
    Special Price £62.49 Regular Price £81.24
    • In Stock | 48 Hour Delivery
  2. 250mm Twin Wall Flue Pipe in Stainless Steel - 175mm

    Key Features:

    This 250mm twin wall insulated flue pipe is used to extend the height of a flue system by 250mm. Supplied with a locking band. Learn More
    Special Price £62.02 Regular Price £80.63
    • In Stock | 48 Hour Delivery
  3. Twin Wall Rain Cap in Stainless Steel - 150mm

    Key Features:

    A rain cap is used at the end of a flue system it helps to prevent rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £61.92 Regular Price £80.50
    • In Stock | 48 Hour Delivery
  4. Twin Wall Weathering Cap in Stainless Steel - 150mm

    Key Features:

    A weathering cap is used at the end of a flue system it helps to prevent down draught and rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £61.86 Regular Price £80.42
    • In Stock | 48 Hour Delivery
  5. 45 Degree Twin Wall Sleeve in Stainless Steel - 175mm

    Key Features:

    A wall sleeve used where the flue passes through a wall at 45 degrees. Learn More
    Special Price £61.29 Regular Price £79.68
    • In Stock | 48 Hour Delivery
  6. 95mm - 135mm Twin Wall Flat Adjustable Wall Support in Stainless Steel - 125mm

    Key Features:

    Used to connect twin wall flue pipe to the wall. The bracket can be placed anywhere on a length of pipe, except for on the joints. The support allows the pipe to be fitted 95mm - 135mm away from the wall. Learn More
    Special Price £60.66 Regular Price £78.86
    • In Stock | 48 Hour Delivery
  7. 0-30 Degree Twin Wall Square 2-Part Finishing Plate in Matt Black - 175mm

    Key Features:

    A two part square finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 0-30 degrees. Learn More
    Special Price £60.47 Regular Price £78.61
    • In Stock | 48 Hour Delivery
  8. 30-45 Degree Twin Wall Square 2-Part Finishing Plate in Matt Black - 175mm

    Key Features:

    A two part square finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 30-45 degrees. Learn More
    Special Price £60.47 Regular Price £78.61
    • In Stock | 48 Hour Delivery
  9. Twin Wall Firestop Masking Plate in Stainless Steel - 150mm

    Key Features:

    A masking plate used to give a neat finish to the underside of a fire stop plate. Learn More
    Special Price £60.13 Regular Price £78.17
    • In Stock | 48 Hour Delivery
  10. Twin Wall Rain Cap in Stainless Steel - 125mm

    Key Features:

    A rain cap is used at the end of a flue system it helps to prevent rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £59.35 Regular Price £77.16
    • In Stock | 48 Hour Delivery
  11. Twin Wall Weathering Cap in Stainless Steel - 125mm

    Key Features:

    A weathering cap is used at the end of a flue system it helps to prevent down draught and rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £59.26 Regular Price £77.04
    • In Stock | 48 Hour Delivery
  12. Twin Wall Conical Adaptor in Matt Black - 150mm

    Key Features:

    A conical adaptor used to connect twin wall insulated flue pipe to the appliance. Supplied with a locking band. Learn More
    Special Price £58.88 Regular Price £76.54
    • In Stock | 48 Hour Delivery
  13. 250mm Twin Wall Flue Pipe in Matt Black - 125mm

    Key Features:

    This 250mm twin wall insulated flue pipe is used to extend the height of a flue system by 250mm. Supplied with a locking band. Learn More
    Special Price £58.76 Regular Price £76.39
    • In Stock | 48 Hour Delivery
  14. Twin Wall Appliance Connector in Matt Black - 200mm

    Key Features:

    Used to connect the appliance flue outlet / single wall flue pipe to twin wall insulated flue pipe. Supplied with a locking band. Learn More
    Special Price £57.72 Regular Price £75.04
    • In Stock | 48 Hour Delivery
  15. Twin Wall Firestop Masking Plate in Stainless Steel - 125mm

    Key Features:

    A masking plate used to give a neat finish to the underside of a fire stop plate. Learn More
    Special Price £57.28 Regular Price £74.46
    • In Stock | 48 Hour Delivery
  16. Twin Wall Conical Adaptor (125mm) in Stainless Steel - 150mm

    Key Features:

    A conical adaptor used to connect a 125mm appliance outlet to twin wall insulated flue pipe. Supplied with a locking band. Learn More
    Special Price £57.26 Regular Price £74.44
    • In Stock | 48 Hour Delivery
  17. Twin Wall Conical Adaptor (125mm) in Matt Black - 125mm

    Key Features:

    A conical adaptor used to connect a 125mm appliance outlet to twin wall insulated flue pipe. Supplied with a locking band. Learn More
    Special Price £57.06 Regular Price £74.18
    • In Stock | 48 Hour Delivery
  18. Twin Wall (Below) to Flex Liner Adaptor in Stainless Steel - 150mm

    Key Features:

    Used to connect twin wall insulated flue pipe (below) to a flexible flue liner (above). Supplied with a locking band. Learn More
    Special Price £56.71 Regular Price £73.72
    • In Stock | 48 Hour Delivery

Twin Wall Flue Systems

Twin wall flue systems allow you to install a stove safely and efficiently in homes without an existing chimney. Designed with double insulation, these flues ensure that exhaust gases are expelled correctly while keeping the outer pipe cooler, making them ideal for stoves installed outside a traditional chimney.

Why Do You Need a Twin Wall Flue?

  • Safe operation – expels fumes safely while maintaining appropriate surface temperatures
  • Compliance – meets UK building regulations for wood, multi-fuel, or gas stoves
  • Non-chimney installation – allows a stove to be installed in homes without an existing flue
  • Flexible setup – can be used for single or multi-storey installations with straight or angled runs

Styles and Components

Our twin wall flue range includes:

  • Double insulated pipes – available in multiple diameters for different stove types
  • Adapters, bends, and T-pieces – to configure the flue according to your installation
  • Top caps and rain cowls – protect the flue from the elements while ensuring proper draft

Before You Choose

Not all stoves require a twin wall flue. These systems are primarily for homes without an existing chimney or for installations outside a standard flue. Check your property layout and stove type carefully to determine if a twin wall system is necessary. Professional installation by a HETAS-qualified engineer is strongly recommended.

Explore Our Range

Browse our selection of twin wall flues and accessories to find everything needed for a compliant, safe installation. For guidance, contact our HETAS-trained team on 0161 376 4191 or see our stove installation guide.

Visit our Showrooms

Explore our full range of wood burning stoves, BBQs, grills and outdoor heating at our showrooms.

Cheadle

Stanley Green Retail Park, 
Earl Rd, Cheadle
SK8 6PT

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Stockport

137 Wellington Road North
Stockport, Cheshire
SK4 2PF

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Bromsgrove

15 Sherwood Rd
Bromsgrove
B60 3DR

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Package includes: 

Woodford Carrington 5 Multifuel Stove (Ideal Home Award winner), Flue liner Pack (flue liner, adapter, chimney cap), Fitting Kit (stove pipe, register plate, carbon monoxide detector) Full Installation (by a HETAS registered installer)