Low Temp 177-330mm Multi-Purpose Flat Roof Flashing (Black)

£60.35 Inc VAT

Weather-proofing Roof Flashings for all surface types, pitched or flat.

Available for 125mm-200mm internal diameter Twin Wall systems, High and Low temperature resistant options and a variety of base sizes.

Twin wall flue size guide

1. Pipe and elbow diameters

With twin wall flue pipe, the internal and external diameters are different. This is because they have 1 inch of insulation surrounding the inner pipe that makes the outer pipe 2 inches larger than the inner pipe. The diameters referred to always relate to the INTERNAL diameter of the pipes it is this diameter that is important when connecting your flue pipe to a stove.

2. Brackets and finishing plates

Due to the reasons above all brackets and plates that are cut to fit twin wall pipe will actually measure 2 inches more than their stated diameter.

Stated Diameter I = Internal Diamater E = External Diameter Brackets & plate Diameter
100mm (4″) 100mm 150mm 150mm
125mm (5″) 125mm 175mm 175mm
150mm (6″) 150mm 200mm 200mm
175mm (7″) 175mm 225mm 225mm
200mm (8″) 200mm 250mm 250mm

Other useful information regarding twin wall flue systems

  • Your flue system (internal diameter) must never be less than the flue collar diameter on your stove and the stated flue requirements of that stove.
  • You can increase but never decrease the diameter of your flue system.
  • For that reason we do not sell reducers or decreasing components.
  • You should have a maximum of 4 elbows in your system.
  • The maximum angle of a bend permitted is 45 degrees other than coming straight out the back of your stove.
  • You should aim for an overall height of at least 4.5 meters from the top of your stove for the flue to work well.
  • The outlet or terminal of your flue system needs to finish at least 1000mm above your roof or 2,300mm horizontally from your roof, or 600mm above the ridge of your roof, whichever comes first.
  • Need help planning your system? Call us on 01376 315 760 to speak to our HETAS approved team of specialists who can plan your building regulation compliant system with you.

Low Temp. 177-330mm Multi-Purpose Flat Roof Flashing

Heat resistant, weather proofing Flashing for all non-tiled roof types.

Secured onto the roof surface using a Flashing Fixing Kit (sold separately), Flashing offers a weather proof collar for twin wall flue pipes passing through a roof. The silicone portion can be easily cut down to the exact size required and is pre-set at a 90° angle for flat roofs.

Available in High and Low temp. versions, for 125mm-200mm internal diameter twin wall pipes. It is advised to use Low Temp. Flashing only if the roof is further than 5m from the stove. Below 5m requires the High Temp. version.

  • Colour: Black
  • External Diameters: 177-330mm
  • Intermittent Temp. Resistance: 135° C
  • Continuous Temp. Resistance: 100° C
  • Material: Aluminium and Silicone
  • Base Size: 420mm²

Additional information

Colour

Black

Flue Diameter

150mm, 175mm, 200mm

Flue Parts

Flashings

To Fit

Twin wall pipe