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127mm (5 inch) Twin wall flue SFL Sflue

SFL Sflue twin wall flue

Sflue is a mid range twin wall flue chimney system designed for use on woodburning/multifuel stoves, manufactured by SFL.

  • Twist lock jointing system - secures using locking band
  • 15 year warranty
  • Compatible with Excelsior Plus Twin wall flue systems
  • Operating temperatures up to 450 deg C
  • Insulation thickness 25mm
  • Internal skin is corrosion resistant 316L stainless steel
  • External skin is 304 stainless steel
  • Design allows internal expansion at every joint.
  • Internal joint system prevents moisture draw through
  • HETAS listed for use on solid fuel applications

Locking band is included with all parts having a female collar

Diameter is internal


Appliance adaptor - 127mm (5inch) Sflue twin wall
£13.85
inc VAT  £16.62
Use to connect an appliance or stove pipe to the twin wall flue system.
Increasing adaptor 97-127mm - 127mm (5inch) Sflue twin wall
£29.34
inc VAT  £35.21
Increases the appliance outlet size by one diameter. Use to connect an appliance or stove pipe to the twin wall flue system.
Stove adaptor - 127mm (5inch) Sflue twin wall
£13.02
inc VAT  £15.62
Use to connect your twin wall flue directly onto your stove.
Sflue to flue liner adapter - 127mm (5inch) Sflue twin wall
£38.68
inc VAT  £46.42
Designed to connect a flue liner to Sflue.Use this adapter where the flexible liner goes above the twin wall flue.
1000mm straight length - 127mm (5inch) Sflue twin wall
£44.08
inc VAT  £52.90
Straight pipe (effective length). Locking band included.
500mm straight length - 127mm (5inch) Sflue twin wall
£29.23
inc VAT  £35.08
Straight pipe (effective length). Locking band included.
300mm straight length - 127mm (5inch) Sflue twin wall
£23.19
inc VAT  £27.83
Straight pipe (effective length). Locking band included.
120mm straight length - 127mm (5inch) Sflue twin wall
£16.53
inc VAT  £19.84
Straight pipe (effective length). Locking band included.
Inspection length - 127mm (5inch) Sflue twin wall
£102.96
inc VAT  £123.55
Allows for cleaning and inspection of the chimney system. Locking band included.
Adjustable length 350-530mm - 127mm (5inch) Sflue twin wall
£71.87
inc VAT  £86.24
Straight pipe adjustable (effective length). Locking band included.
Adjustable length 200-325mm - 127mm (5inch) Sflue twin wall
£48.52
inc VAT  £58.22
Straight pipe adjustable (effective length). Locking band included.
Locking band - 127mm (5inch) Sflue twin wall
£4.94
inc VAT  £5.93
Locking band for use on all joints.
Locking band micro toggle - 127mm (5inch) Sflue twin wall
£5.52
inc VAT  £6.62
Locking band with micro toggle adjustment.
Structural locking band - 127mm (5inch) Sflue twin wall
£12.53
inc VAT  £15.04
Provides added security on unsupported stacks up to 2.5m above the final support or wall band.
90 deg tee - 127mm (5inch) Sflue twin wall
£90.59
inc VAT  £108.71
Allows for cleaning and inspection of the chimney system. Locking band included.
135 deg tee - 127mm (5inch) Sflue twin wall
£108.12
inc VAT  £129.74
Allows for cleaning and inspection of the chimney system. Locking band included.
Tee cap - 127mm (5inch) Sflue twin wall
£15.51
inc VAT  £18.61
Provides cleaning point for the flue system.
Tee cap with drain - 127mm (5inch) Sflue twin wall
£26.96
inc VAT  £32.35
Provides cleaning and drain point for the flue system.
15 deg bend - 127mm (5inch) Sflue twin wall
£42.35
inc VAT  £50.82
15 deg elbow allows for a change in direction and can be combined to provide a chimney offset. Locking band included.
30 deg bend - 127mm (5inch) Sflue twin wall
£42.35
inc VAT  £50.82
30 deg elbow allows for a change in direction and can be combined to provide a chimney offset. Locking band included.
45 deg bend - 127mm (5inch) Sflue twin wall
£42.35
inc VAT  £50.82
45 deg elbow allows for a change in direction and can be combined to provide a chimney offset
90 deg bend - 127mm (5inch) Sflue twin wall
£78.46
inc VAT  £94.15
90 deg elbow allows for a change in direction and can be combined to provide a chimney offset. Locking band included.
Firestop spacer - 127mm (5inch) Sflue twin wall
£8.06
inc VAT  £9.67
Provides location and dust stop where flue passes through non combustible floors.
Ventilated ceiling support - 127mm (5inch) Sflue twin wall
£90.47
inc VAT  £108.56
Supports and firestops the chimney as it passes through the first combustible floor directly above the appliance. Load bearing.
Ventilated fire stop - 127mm (5inch) Sflue twin wall
£52.25
inc VAT  £62.70
Used where the chimney passes through the upper combustible floors and where sections below the floor are enclosed within a non combustible shaft. Non load bearing.
Wall band - 127mm (5inch) Sflue twin wall
£16.21
inc VAT  £19.45
Provides lateral support for the chimney.
Wall band extension arms - Sflue twin wall
£9.47
inc VAT  £11.36
Used to extend the wall band clearance up to 100mm.
Wall support bracket - 127mm (5inch) Sflue twin wall
£101.13
inc VAT  £121.36
Wall support bracket (base support) supports the vertical load of the chimney when anchored to a suitable wall. Locking band included.
Flue liner to Sflue anchor plate - 127mm (5inch) Sflue twin wall
£20.43
inc VAT  £24.52
Designed to connect a flue liner to Sflue on a capped chimney within the attic space. Use this adapter where the flexible liner goes below the twin wall flue.
Roof - Rafter support - Sflue twin wall
£15.23
inc VAT  £18.28
Adjustable support, allows chimney to be supported on roof joist, trusses and rafters.
Guy wire bracket - 127mm (5inch) Sflue twin wall
£5.45
inc VAT  £6.54
Guy wire bracket, use with wire to provide lateral stability above the roof line.
Universal guy wire kit
£49.95
inc VAT  £59.94
The Universal guy wire kit provides lateral support to the flue above the roof line. Guy wire bracket needed.
Universal roof brace kit
£64.95
inc VAT  £77.94
The Universal roof brace kit provides lateral support to the flue above the roof line. No guy wire bracket needed.
Rain cap - 127mm (5inch) Sflue twin wall
£26.87
inc VAT  £32.24
Prevents rain ingress at top of chimney. Locking band included.
Rain cap with mesh - 127mm (5inch) Sflue twin wall
£39.28
inc VAT  £47.14
Prevents rain and bird ingress at top of chimney. Locking band included.
Storm cowl - 127mm (5inch) Sflue twin wall
£47.02
inc VAT  £56.42
Provides protection from rain and wind at the top of the chimney. Locking band included.
Top stub - 127mm (5inch) Sflue twin wall
£27.63
inc VAT  £33.16
Used at the top of a chimney if no rain guard is required. Locking band included.
Storm collar - 127mm (5inch) Sflue twin wall
£10.34
inc VAT  £12.41
Provides protection from rain and wind at the top of the flashing.
Flashing EPDM Res 1
£24.99
inc VAT  £29.99
This flashing is used to provide a weatherproof seal where the flue passes through a tiled or slate roof.
Flashing EPDM Res 1 Lead base
£41.63
inc VAT  £49.95
This flashing is used to provide a weatherproof seal where the flue passes through a tiled or slate roof.
Flashing silicone Res 1 High Temp
£41.66
inc VAT  £49.99
This flashing is used to provide a weatherproof seal where the flue passes through a tiled or slate roof.
Masterflash EPDM No 7
£39.99
inc VAT  £47.99
This flashing is suitable for sheet metal profiled roofs, flat roofs, boats and caravans. Comes with fixing kit.
Masterflash No 7 High Temp
£54.99
inc VAT  £65.99
This flashing is suitable for sheet metal profiled roofs, flat roofs, boats and caravans. Comes with fixing kit.
Lead slate 0-35 degree pitch, for 125mm Sflue twin wall flue
exclusive
£54.95
inc VAT  £65.94
Lead slates are used wherever a pipe penetrates a roof, to form a weatherproof joint. Select the pitch required.
Lead slate 36-45 degree pitch, for 125mm Sflue twin wall flue
exclusive
£57.40
inc VAT  £68.88
Lead slates are used wherever a pipe penetrates a roof, to form a weatherproof joint. Select the pitch required.
Lead slate 46-60 degree pitch, for 125mm Sflue twin wall flue
exclusive
£64.19
inc VAT  £77.03
Lead slates are used wherever a pipe penetrates a roof, to form a weatherproof joint. Select the pitch required.
Trim collar 90 degree - 127mm (5inch) Sflue twin wall
£9.61
inc VAT  £11.53
Provides clean finish where the chimney passes through an outside wall at 90 degrees.
Trim collar 45 degree - 127mm (5inch) Sflue twin wall
£9.61
inc VAT  £11.53
Provides clean finish where the chimney passes through an outside wall at 45 degrees.
Wall sleeve - 127mm (5inch) Sflue twin wall
£27.15
inc VAT  £32.58
Provides protections as flue passes through building structure.

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We pride ourselves on our customer service and aim to get our flexible flue liners and flue liner accessories to you quickly, which is why we keep products in stock.

We welcome trade and retail customers and deliver nationwide from our Nottingham base, East Midlands. Free delivery on most orders.