Twin Wall Flue

Twin Wall Flue

Twin wall flues are specialised insulated chimney systems designed for use with open or closed solid fuel stoves. They can withstand continuous operating temperatures of up to 450°C and are perfect for heating appliances such as wood-burning stoves, gas coal effect fires, and oil boilers. These flues are ideal for new build projects and renovations as they are a simple, cost-effective solution for those without a brick chimney stack. Take a look at our article on fitting a twin wall system.

Nationwide Chimney Components only supplies premium, high-quality twin wall flue systems and twin wall flue pipes. Our twin-walled flue products include pipes with adjustable lengths, making them suitable for indoor and outdoor flues and biomass boiler installations. These products have a simple twist-lock bayonet jointing system and are available in high-grade stainless steel finish or black twin wall flue pipe in all sizes. They are also HETAS-approved, ensuring that they meet building regulations.

PLEASE NOTE DIAMETERS 180mm & 200mm ARE NO LONGER AVAILABLE IN SCHIEDEL'S ICID RANGE

  • Black Dragon Self Rotating Cowl

    Dragon Self Rotating Cowl

    £255.00 Inc. VAT
    £212.50 Ex. VAT
    A Dragon Self Rotating Cowl  is suitable to be installed within an existing twin or single wall flue system using the specially designed "Push Fit" system.  The Dragon Cowl always rotates and places itself in the opposite direction to the...
    £255.00 Inc. VAT
    £212.50 Ex. VAT
  • Schiedel 460mm Effective Length

    460mm Effective Length

    £102.11 Inc. VAT
    £85.09 Ex. VAT
    460mm Effective Length are used to make up spaces in order for the system to operate. The chimney flue pipe lengths can be applied either vertically or horizontally. The shorter chimney pipe lengths are great for making up spaces in tight room areas...
    £102.11 Inc. VAT
    £85.09 Ex. VAT
  • Insulated Tee Plug with Drain

    Insulated Tee Plug with Drain

    £118.10 Inc. VAT
    £98.42 Ex. VAT
    This Insulated Tee Plug with Drain is used at the base of the vertical chimney to provide a drain off point for rainwater and condensate. It also provides inspection or cleaning access. It may be used in both dry and wet conditions and on both...
    £118.10 Inc. VAT
    £98.42 Ex. VAT
  • Top Plate

    Top Plate

    £122.94 Inc. VAT
    £102.45 Ex. VAT
    The top plate ICID plus is designed to be used internally or externally to provide either initial or intermediate support for the vertical chimney. It is used in combination with side plates or with cantilever brackets. Top Plate benefits ...
    £122.94 Inc. VAT
    £102.45 Ex. VAT
  • 2 Piece Trim Collar 45°

    2 Piece Trim Collar 45 Degree

    £45.38 Inc. VAT
    £37.82 Ex. VAT
    The trim collars are used to give an aesthetic finish where the chimney penetrates the wall of a building. The 45 version should be used in combination with a 45 tee connection. NCC only stock the very best chimney and flue components so you can be sure...
    £45.38 Inc. VAT
    £37.82 Ex. VAT
  • Retro Fit Wall Support

    Retrofit Wall Support 60mm-200mm

    £108.44 Inc. VAT
    £90.37 Ex. VAT
    This Retrofit Wall Support 60mm- 200mm is exceptionally easy to install, comes with a Lifetime Guarantee, but also saves up to £120 on a typical Ø150 4.5 m bungalow installation using standard black painted components.  ...
    £108.44 Inc. VAT
    £90.37 Ex. VAT
  • 2 Piece Trim Collar 90°

    2 Piece Trim Collar 90 Degree

    £38.18 Inc. VAT
    £31.82 Ex. VAT
    9580P0180 2 Piece Trim Collar 90 Degreeis an item used with ECO ICID twin wall insulated flue. It is insulated with a 25mm thick high density rockwool insulation. Generally used to cover a hole around the flue system, NOT to used as a...
    £38.18 Inc. VAT
    £31.82 Ex. VAT
  • Ventilated Support Plate

    Ventilated Support Plate - 2 Piece

    £105.16 Inc. VAT
    £87.63 Ex. VAT
    Ventilated Support Plate – Designed to support the twin wall flue system as it passes through a combustible floor.
    £105.16 Inc. VAT
    £87.63 Ex. VAT
  • Schiedel 90° Inspection Bend

    90 Degree Inspection Bend

    £230.62 Inc. VAT
    £192.18 Ex. VAT
    This 90 Degree Inspection Bend is used to provide a change of direction on a connecting flue pipe. The cover plate on the middle section may be removed to allow inspection and cleaning access. 90 Degree Inspection Bend Features Allows change in...
    £230.62 Inc. VAT
    £192.18 Ex. VAT
  • Insulated Tapered Terminal

    Insulated Tapered Terminal

    £131.95 Inc. VAT
    £109.96 Ex. VAT
    DN8A038125ECO ICID is a twin wall insulated flue manufactured with a 316L grade stainless steel liner and a stainless steel case. It is insulated with a 25mm thick high density rockwool insulation. Liner Thickness:- 0.5mm Case Thickness:- 0.5mm CE...
    £131.95 Inc. VAT
    £109.96 Ex. VAT
  • Wall Support Side Plates

    Wall Support Side Plates

    £106.49 Inc. VAT
    £88.74 Ex. VAT
    £106.49 Inc. VAT
    £88.74 Ex. VAT
  • 293mm Effective Length

    293mm Effective Length

    £70.86 Inc. VAT
    £59.05 Ex. VAT
    £70.86 Inc. VAT
    £59.05 Ex. VAT
  • Draught Stabiliser

    Draught Stabiliser (Twin Wall)

    £93.66 Inc. VAT
    £78.05 Ex. VAT
    The Draught Stabiliser Section is installed where there is excessive draught on a system. This is connected onto the system usually via a 90° tee.
    £93.66 Inc. VAT
    £78.05 Ex. VAT
  • Schiedel ICID Anchor Plate

    Schiedel ICID Screwfit Anchor Plate (Screwfit Spigot)

    £131.95 Inc. VAT
    £109.96 Ex. VAT
    The Schiedel SCREWFIT Anchor Plate is used when commencing an installation with a fire chest, or when extending an existing brick or masonry chimney stack, an anchor plate must be used. The plate screws directly onto Schiedel Tecnoflex flue liner and is...
    £131.95 Inc. VAT
    £109.96 Ex. VAT
  • Raincap with 10mm Sparkguard

    Raincap with 10mm Sparkguard

    £57.28 Inc. VAT
    £47.73 Ex. VAT
    This Raincap with 10mm Sparkguard is used to terminate the system and also prevents ingressive rain entering it, the 10mm mesh offers protection against sparks leaving the flue system onto easily ignited roofs such as Thatched or Shingles. Raincap...
    £57.28 Inc. VAT
    £47.73 Ex. VAT
  • Adjustable Trim Collar 0-20°

    Adjustable Trim Collar 0-20 Degree

    £42.59 Inc. VAT
    £35.49 Ex. VAT
    The Adjustable Trim Collar 0-20 Degree provides a very flexible way of giving an aesthetically pleasing finish to any chimney flue system.These collars are lightweight and easy to fit.
    £42.59 Inc. VAT
    £35.49 Ex. VAT
  • non combustable floor support plate

    Support Plate (Non Combustible Floor)

    £46.75 Inc. VAT
    £38.96 Ex. VAT
    Support Plate designed to support the Twin Wall flue through a non combustible floor (i.e concrete).
    £46.75 Inc. VAT
    £38.96 Ex. VAT
  • 160mm Effective Length

    160mm Effective Length

    £58.12 Inc. VAT
    £48.43 Ex. VAT
    160mm Effective Length are used to make up spaces in order for the system to operate. The chimney flue pipe lengths can be applied either vertically or horizontally. The shorter chimney pipe lengths are great for making up spaces in tight room areas...
    £58.12 Inc. VAT
    £48.43 Ex. VAT
  • Cantilever Support

    Cantilever Support

    £142.25 Inc. VAT
    £118.54 Ex. VAT
    The Cantilever Supports are used once the position of the support has been established in relation to the chimney route. The plates are secured to the wall using expansion bolts to ensure adequate attachment and support. Supports the system when used...
    £142.25 Inc. VAT
    £118.54 Ex. VAT
  • Schiedel Screwfit Flex to ICID Adaptor

    Schiedel ICID Screwfit Adaptor from Flex to ICID

    £131.95 Inc. VAT
    £109.96 Ex. VAT
    The Schiedel SCREWFIT Adaptor is used to connect from Schiedel Tecnoflex flexible flue liner onto ICID at the top of an existing chmney stack. Suitable for use on solid fuel appliances. Simple and fast to install. Compatible with Schiedel...
    £131.95 Inc. VAT
    £109.96 Ex. VAT
  • Adjustable Trim Collar 20-35°

    Adjustable Trim Collar 20-35 Degree

    £43.54 Inc. VAT
    £36.28 Ex. VAT
    The Adjustable Trim Collar 20-35 Degree provides a flexible way of giving an aesthetically pleasing finish to any chimney flue system. These are lightweight and easy to fit
    £43.54 Inc. VAT
    £36.28 Ex. VAT
  • Firestop Plate

    Firestop Plate 2 Piece

    £42.65 Inc. VAT
    £35.54 Ex. VAT
    This fire stop plate is used exclusively where the chimney passes through a non-combustible floor. Fire Stop Features Fast inter fit with ICID System Chimney. Suitable for use on solid fuel appliances.
    £42.65 Inc. VAT
    £35.54 Ex. VAT
  • Adaptor Prima Smooth to ICID Plus

    Adaptor Prima Smooth to ICID Plus

    £58.66 Inc. VAT
    £48.88 Ex. VAT
    This Adaptor Prima Smooth to ICID Plus is used to convert from Prima Smooth to ICID Plus. The Schiedel Eco ICID range has evolved into a multi-application system adaptable for Dry (D), Fu (W) and even Positive Pressure (P) applications...
    £58.66 Inc. VAT
    £48.88 Ex. VAT
  • Storm Collar Flat

    Storm Collar Flat

    £59.44 Inc. VAT
    £49.53 Ex. VAT
    This Storm Collar Flat  is used with a flashing kit to add additional protection against the ingress of rainwater.
    £59.44 Inc. VAT
    £49.53 Ex. VAT
  • Structural Wall Band (50mm)

    Structural Wall Band (50mm)

    £39.37 Inc. VAT
    £32.81 Ex. VAT
    95430180 This Structural Wall Band (50mm) is used to fix the chimney to a supporting wall and provides lateral support only at a fixed distance of 50mm. It can be used in conjunction with Wall band extensions to provide adjustments in distance from...
    £39.37 Inc. VAT
    £32.81 Ex. VAT
  • Adjustable Trim Collar 35-45°

    Adjustable Trim Collar 35-45 Degree

    £44.56 Inc. VAT
    £37.13 Ex. VAT
    This Adjustable Trim Collar 35-45 Degree provides a flexible way of giving an aesthetically pleasing finish to any chimney flue system.They are very lightweight and easy to fit.
    £44.56 Inc. VAT
    £37.13 Ex. VAT
  • Adaptor Prima Plus to ICID Plus

    Adaptor Prima Plus to ICID Plus

    £58.79 Inc. VAT
    £48.99 Ex. VAT
    The Adaptor Prima Plus to ICID is used to convert from the Prima Plus single wall connecting chimney flue pipe to the ICID system chimney. The Schiedel Eco ICID range has evolved into a multi-application system adaptable for Dry (D), Fu (W) and even...
    £58.79 Inc. VAT
    £48.99 Ex. VAT
  • Structural and Retrofit Wall Band Extensions

    Structural and Retrofit Wall Band Extensions

    £37.19 Inc. VAT
    £30.99 Ex. VAT
    These Structural and Retrofit Wall Band Extensions are used in conjunction with the Structural Wall Band to provide varying adjustments in distance from the wall.
    £37.19 Inc. VAT
    £30.99 Ex. VAT
  • Retrofit Wall Band

    Retrofit Wall Band

    £88.18 Inc. VAT
    £73.48 Ex. VAT
    This Retrofit Wall Band is used as part of teh Schiedel ECO ICID range, ICID Plus is ideal not only for traditional stoves but also for pellet stoves, biomass appliances, mini/micro CHP and even condensing boilers capable of...
    £88.18 Inc. VAT
    £73.48 Ex. VAT
  • Appliance Connector (Open)

    Appliance Connector (Open)

    £41.70 Inc. VAT
    £34.75 Ex. VAT
    The ICID Insulated Appliance Connector is used to push into the appliance spigot with the male collar pointing upwards. It is used on solid fuel appliances and is sealed to the appliance with fire rope and fire cement or high temperature sealant to...
    £41.70 Inc. VAT
    £34.75 Ex. VAT
  • Loft Guard

    Loft Guard

    £166.45 Inc. VAT
    £138.71 Ex. VAT
    This Loft Guard component is used to protect the flue form accidental touch within the loft space, preventing a fire from starting. Loft Guard Features Prevents the risk of a fire. Specially engineered. Pre-cut ventilation gaps. 1m long in length.
    £166.45 Inc. VAT
    £138.71 Ex. VAT
  • Stainless Angled Storm Collar

    Angled Storm Collar

    £62.95 Inc. VAT
    £52.46 Ex. VAT
    £62.95 Inc. VAT
    £52.46 Ex. VAT
  • Uninsulated Increasing Adaptor

    Uninsulated Increasing Adaptor

    £63.60 Inc. VAT
    £53.00 Ex. VAT
    The ICID Uninsulated Increasing Adaptor is used to start the connection from the appliance to the flue and allows increasing of the flue. It will sink into the appliance spigot and connect to a pipe length. Uninsulated Increasing Adaptor features ...
    £63.60 Inc. VAT
    £53.00 Ex. VAT
  • Inspection Length 125mm

    Inspection Length

    £421.62 Inc. VAT
    £351.35 Ex. VAT
    This Inspection Length is used to provide an inspection or cleaning access on Dry or FU applications under negative pressure conditions (N1). The inspection Box is uninsulated. Inspection Length Features Allows inspection of the pipe for cleaning...
    £421.62 Inc. VAT
    £351.35 Ex. VAT
  • Wall Sleeve 45°

    Wall Sleeve 45°

    £70.22 Inc. VAT
    £58.52 Ex. VAT
    A Wall Sleeve to suit a 45° angle through a Masonry and Timber Wall. 
    £70.22 Inc. VAT
    £58.52 Ex. VAT
  • Roof Support

    Roof Support

    £79.10 Inc. VAT
    £65.92 Ex. VAT
    This item is used to provide the chimney with lateral support as it passes through the roof space. The band is tightened around the chimney and the side plates are rotated and fixed to the roof trusses to suit the angle. Specially engineered Pre drilled...
    £79.10 Inc. VAT
    £65.92 Ex. VAT
  • Schiedel Adaptor ICID Plus To Tecnoflex Plus

    Screwfit Schiedel Adaptor ICID Plus To Tecnoflex Plus

    £78.97 Inc. VAT
    £65.81 Ex. VAT
    The Chimney SCREWFIT Flue Adaptor Eco ICID to Tecnoflex Plus is used to convert the ICID system to the TecnoFlex system. Schiedel Chimney Systems have a range of adaptors to connect all our systems together.
    £78.97 Inc. VAT
    £65.81 Ex. VAT
  • Ceiling Hanger 200mm

    Ceiling Hanger 2pc - 200mm

    £51.17 Inc. VAT
    £42.64 Ex. VAT
    This Ceiling Hanger 2pc - 200mm is used to provide an unsupported chimney with lateral support above roof level. It should be used in conjunction with guy wires or with rigid stays (provided by others) which should be attached to the bracket and...
    £51.17 Inc. VAT
    £42.64 Ex. VAT
  • Wall Sleeve 90°

    Wall Sleeve 90 Degree

    £29.45 Inc. VAT
    £24.54 Ex. VAT
    A Wall Sleeve to suit a 90 degree angle through a Masonry and Timber Wall. 
    £29.45 Inc. VAT
    £24.54 Ex. VAT
  • Ceiling Hanger (1pc) - 180mm

    Ceiling Hanger (1pc) - 180mm

    £37.32 Inc. VAT
    £31.10 Ex. VAT
    This item is used to provide an unsupported chimney with lateral support above roof level. It should be used in conjunction with guy wires or with rigid stays (provided by others) which should be attached to the bracket and then secured to suitable...
    £37.32 Inc. VAT
    £31.10 Ex. VAT

The external diameter of double-walled flues is 60 mm more than the inside diameter. So, a 150 mm pipe has an outer diameter of 210 mm. Our twin wall flues can pass through floors, roofs, or walls, depending on your required flue route. We stock the Schiedel flue system and are one of the UK's leading providers of flue supplies and flue liners.

When installing a twin wall insulated flue system, it is essential to contact a HETAS approved tradesperson to ensure that your flue system is fitted correctly and meets building regulations. At Nationwide Chimney Components, we are committed to providing our customers with the highest quality twin wall flue products and services to ensure a safe and efficient heating system.