01780 300123 
Twin Wall Flue
Our stainless steel or black twin wall flue pipe is a simple push fit joint flue system, build your chimney system by placing each piece on top of the previous and push together to make the joint (the simplest system to construct on the market today). This twin wall flue system is suitable for use with wood, coal, gas and oil appliances. If you are installing a new heating appliance, such as a wood or multi fuel stove, gas coal-effect fire or an oil boiler, you will probably need a twin wall flue system, especially if you do not already have a brick chimney stack. Twin wall flue guide.
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8" inch Black twin wall flue - Firestop Plate
Product Code: 50-200-070
RRP: £104.97Excl. Tax: £55.64 Incl. Tax: £66.77 -
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7" inch Black twin wall flue - Ventilated Firestop Plate
Product Code: 50-175-073
RRP: £161.32Excl. Tax: £74.19 Incl. Tax: £89.03 -
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7" inch Twin Wall Basic Firestop Plate S/S (064)
Product Code: 030918064DW
RRP: £60.96Excl. Tax: £29.08 Incl. Tax: £34.90 -
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8" inch Twin Wall Basic Firestop Plate S/S (064)
Product Code: 030920064DW
RRP: £69.27Excl. Tax: £33.04 Incl. Tax: £39.65 -
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7" inch Finishing Plate 0-30º
Product Code: 55-175-096
RRP: £76.82Excl. Tax: £44.79 Incl. Tax: £53.75 -
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5" inch Black ventilated fire stop plate twin wall flue
Product Code: 30-125-073
RRP: £66.91Excl. Tax: £63.65 Incl. Tax: £76.38 -
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4" inch Twin Wall flue Weathering Gas Cap (12G)
Product Code: 03011012GDW
RRP: £98.70Excl. Tax: £69.04 Incl. Tax: £82.85 -
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7" inch Twin Wall flue Weathering Cap (012)
Product Code: 030118012DW
RRP: £94.75Excl. Tax: £74.19 Incl. Tax: £89.03 -
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5" inch Black Twin wall Flue Raincap
Product Code: 30-125-090
RRP: £120.82Excl. Tax: £63.59 Incl. Tax: £76.31 -
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8" inch Twin Wall flue Weathering Gas Cap (12G)
Product Code: 03012012GDW
RRP: £162.96Excl. Tax: £76.87 Incl. Tax: £92.24 -
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6" inch Black Twin wall Flue Weathering Cap
Product Code: 30-150-091
RRP: £155.97Excl. Tax: £77.37 Incl. Tax: £92.84 -
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4" inch Twin Wall flue Open Terminal (011)
Product Code: 030110011DW
RRP: £79.02Excl. Tax: £50.26 Incl. Tax: £60.31 -
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7" inch Twin Wall flue Raincap (010)
Product Code: 030118010DW
RRP: £81.05Excl. Tax: £48.75 Incl. Tax: £58.50 -
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8" inch Twin Wall flue Open Terminal (011)
Product Code: 030120011DW
RRP: £124.97Excl. Tax: £72.85 Incl. Tax: £87.42 -
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6" inch Black Twin wall Flue Raincap
Product Code: 30-150-090
RRP: £140.91Excl. Tax: £68.89 Incl. Tax: £82.67 -
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8" inch Black twin wall flue Rain Cap
Product Code: 50-200-090
RRP: £104.23Excl. Tax: £70.19 Incl. Tax: £84.23 -
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5" inch Twin Wall flue Weathering Cap (012)
Product Code: 2-125-091
RRP: £69.76Excl. Tax: £45.57 Incl. Tax: £54.68 -
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6" inch Twin Wall flue Weathering Cap (012)
Product Code: 2-150-091
RRP: £81.60Excl. Tax: £61.32 Incl. Tax: £73.58 -
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5" inch Twin Wall flue Raincap (010)
Product Code: 2-125-090
RRP: £59.88Excl. Tax: £31.74 Incl. Tax: £38.09 -
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7" inch Black twin wall Anti-wind Cowl
Product Code: 55-175-091
RRP: £139.21Excl. Tax: £87.06 Incl. Tax: £104.47 -
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7" inch Twin Wall flue Weathering Gas Cap (12G)
Product Code: 03011812GDW
RRP: £139.64Excl. Tax: £65.87 Incl. Tax: £79.04 -
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6" inch Twin Wall flue Raincap (010)
Product Code: 2-150-090
RRP: £69.85Excl. Tax: £50.24 Incl. Tax: £60.29 -
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7" inch Black/Silver Twin wall Flue Rotating Cowl
Product Code: 10-175-094
Excl. Tax: £182.56 Incl. Tax: £219.07 -
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5" inch Black Twin wall Flue Open Terminal
Product Code: 30-125-093
RRP: £149.43Excl. Tax: £84.74 Incl. Tax: £101.69 -
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4" inch Twin Wall flue Weathering Cap (012)
Product Code: 030110012DW
RRP: £66.98Excl. Tax: £42.60 Incl. Tax: £51.12 -
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7" inch Twin Wall flue Open Terminal (011)
Product Code: 030118011DW
RRP: £97.53Excl. Tax: £75.99 Incl. Tax: £91.19 -
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8" inch Twin Wall flue Weathering Cap (012)
Product Code: 030120012DW
RRP: £110.58Excl. Tax: £74.47 Incl. Tax: £89.36 -
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6" inch Black Twin wall Flue Open Terminal
Product Code: 30-150-093
RRP: £160.49Excl. Tax: £91.01 Incl. Tax: £109.21 -
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8" inch Black twin wall flue Anti-wind Cowl
Product Code: 50-200-091
RRP: £166.52Excl. Tax: £91.15 Incl. Tax: £109.38 -
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5" inch Twin Wall flue Weathering Gas Cap (12G)
Product Code: 2-125-092
RRP: £102.81Excl. Tax: £59.94 Incl. Tax: £71.93 -
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4" inch Twin Wall flue Raincap (010)
Product Code: 030110010DW
RRP: £57.49Excl. Tax: £36.57 Incl. Tax: £43.88 -
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8" inch Twin Wall flue Raincap (010)
Product Code: 030120010DW
RRP: £94.78Excl. Tax: £55.26 Incl. Tax: £66.31 -
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6" inch Twin Wall flue Weathering Gas Cap (12G)
Product Code: 2-150-092
RRP: £120.26Excl. Tax: £70.11 Incl. Tax: £84.13 -
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5" inch Twin Wall flue Open Terminal (011)
Product Code: 2-125-093
RRP: £82.30Excl. Tax: £43.62 Incl. Tax: £52.34 -
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5" inch Black/Silver Twin wall Flue Rotating Cowl
Product Code: 30-125-094
RRP: £220.56Excl. Tax: £156.09 Incl. Tax: £187.31 -
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6" inch Twin Wall flue Open Terminal (011)
Product Code: 2-150-093
RRP: £88.39Excl. Tax: £46.84 Incl. Tax: £56.21 -
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5" inch Black Twin wall Flue Weathering Cap
Product Code: 30-125-091
RRP: £133.36Excl. Tax: £69.50 Incl. Tax: £83.40 -
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7" inch Black twin wall Rain Cap
Product Code: 55-175-090
RRP: £101.10Excl. Tax: £63.23 Incl. Tax: £75.88 -
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6" inch Residential - High Temperature Red EPDM Masterflash No. 7 (6"-11" 152mm-280mm)
Product Code: 12-702-3
RRP: £129.60Excl. Tax: £85.87 Incl. Tax: £103.04 -
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8" inch Twin Wall Lead based 30/45 Flashing (017)
Product Code: 030920171DW
RRP: £172.91Excl. Tax: £91.65 Incl. Tax: £109.98 -
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7" inch Standard Fixing Kit
Product Code: 12-SK1--cpy_3
RRP: £52.92Excl. Tax: £18.55 Incl. Tax: £22.26 -
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6" inch Twin Wall flue Storm Collar (13A)
Product Code: 15-150-082
RRP: £38.80Excl. Tax: £20.56 Incl. Tax: £24.67 -
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5" inch Twin Wall flue 5/30 Flashing (018)
Product Code: 030913181DW
RRP: £127.47Excl. Tax: £67.56 Incl. Tax: £81.07 -
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MI-Flash - No 2 Tile Black EPDM 175-275mm LD-760x660
Product Code: 12-2-LD-TILE
RRP: £289.80Excl. Tax: £90.57 Incl. Tax: £108.68 -
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5" inch Tiled roof Flashing - aluminium base & silicone high temp upstand for 5" twin wall flue
Product Code: 12-101RESHT_1
RRP: £134.99Excl. Tax: £63.96 Incl. Tax: £76.75 -
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8" inch metal or flat roof flashing for 200mmtwin wall flue - Low Temperature Black EPDM Masterflash No. 8 (7 to 13 inch 178mm-330mm)
Product Code: 12-801--cpy
RRP: £92.62Excl. Tax: £74.99 Incl. Tax: £89.99 -
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8" inch Metal or flat roof flashing for 200mmtwin wall - High temperature Red EPDM Masterflash No. 8 (7 to 13 inch 178mm-330mm)
Product Code: 12-802-2
RRP: £149.81Excl. Tax: £89.79 Incl. Tax: £107.75 -
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6" inch Twin Wall Lead Based 30/45 Flashing (017)
Product Code: 030915171DW
RRP: £127.47Excl. Tax: £78.99 Incl. Tax: £94.79 -
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5" inch Standard Fixing Kit
Product Code: 12-SK1--cpy_1
RRP: £52.92Excl. Tax: £18.55 Incl. Tax: £22.26 -
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7" inch Tiled roof Flashing - aluminium base & rubber upstand for 7" twin wall flue
Product Code: 12-201RES--cpy_10
RRP: £88.99Excl. Tax: £60.18 Incl. Tax: £72.22 -
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5" inch Tiled roof Flashing - aluminium base & rubber upstand for 5" twin wall flue
Product Code: 12-1-Tile-b
RRP: £69.00Excl. Tax: £45.99 Incl. Tax: £55.19 -
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4" inch Twin Wall flue Storm Collar (13A)
Product Code: 03091013ADW
RRP: £57.49Excl. Tax: £36.57 Incl. Tax: £43.88 -
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6" inch Residential - Low Temperature Black EPDM Masterflash No. 7 (6"-11" 152mm-280mm)
Product Code: 12-701--cpy
RRP: £92.62Excl. Tax: £58.67 Incl. Tax: £70.40 -
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Nu lead base flashing Low Temp Black EPDM Size 125-225mm - size 15
Product Code: 12-15-LD-TILE
RRP: £289.80Excl. Tax: £79.99 Incl. Tax: £95.99 -
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5" inch Tiled roof Flashing Silicone 1 High temperature 3-8" 75-200mm
Product Code: 12-101RESHT
RRP: £93.18Excl. Tax: £45.57 Incl. Tax: £54.68 -
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6" inch Flat / metal roof flashing EPDM for 6" twin wall flue
Product Code: 12-701--cpy2
RRP: £92.99Excl. Tax: £59.35 Incl. Tax: £71.22 -
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8" inch Twin Wall flue Storm Collar (13A)
Product Code: 03092013ADW
RRP: £47.10Excl. Tax: £24.96 Incl. Tax: £29.95 -
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7" inch Twin Wall Lead Based Flat Flashing (019)
Product Code: 030918191DW
RRP: £151.86Excl. Tax: £80.49 Incl. Tax: £96.59 -
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7" inch Tiled roof Flashing 2 8-11" 200-275mm
Product Code: 12-201RES--cpy
RRP: £88.99Excl. Tax: £56.17 Incl. Tax: £67.40 -
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4" inch Twin Wall flue 5/30 Flashing (018)
Product Code: 030910181DW
RRP: £152.85Excl. Tax: £65.62 Incl. Tax: £78.74 -
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5" inch Residential - High Temperature Red EPDM Masterflash No. 6 (5"-9" 127mm-228mm)
Product Code: 12-602C
RRP: £86.94Excl. Tax: £68.50 Incl. Tax: £82.20 -
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6" inch Tiled roof Flashing 2 8-11" 200-275mm
Product Code: 12-201RES--cpy_2
RRP: £88.99Excl. Tax: £56.17 Incl. Tax: £67.40 -
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6" inch Tiled roof Flashing - aluminium base & rubber upstand for 6" twin wall flue
Product Code: 12-201RES--cpy_9
RRP: £88.99Excl. Tax: £56.17 Incl. Tax: £67.40 -
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8" inch Twin Wall Lead based 5/30 Flashing (018)
Product Code: 030920181DW
RRP: £172.91Excl. Tax: £91.65 Incl. Tax: £109.98 -
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7" inch Twin Wall Lead Based 30/45 Flashing (017)
Product Code: 030918171DW
RRP: £172.91Excl. Tax: £91.65 Incl. Tax: £109.98 -
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Tile Grey SILICONE High Temp Flashing 80-200mm AL-605x505
Product Code: 12-1-TILEHT
RRP: £69.99Excl. Tax: £63.99 Incl. Tax: £76.79 -
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4" inch Flat / metal roof flashing high temp EPDM for 4" twin wall
Product Code: 12-5HT
RRP: £69.48Excl. Tax: £47.99 Incl. Tax: £57.59 -
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5" inch Twin Wall flue Flat Flashing (019)
Product Code: 030913191DW
RRP: £106.40Excl. Tax: £56.39 Incl. Tax: £67.67 -
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8" inch Tiled roof Flashing for 200mmtwin wall flue - Silicone 2 High temperature 8-11" 175-275mm
Product Code: 12-201RESHT--cpy-2
RRP: £96.99Excl. Tax: £81.90 Incl. Tax: £98.28 -
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7" inch Black twin wall Storm Collar
Product Code: 55-175-082
RRP: £41.84Excl. Tax: £26.61 Incl. Tax: £31.93 -
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7" inch Residential - High Temperature Red EPDM Masterflash No. 7 (6"-11" 152mm-280mm)
Product Code: 12-702-2
RRP: £129.60Excl. Tax: £85.87 Incl. Tax: £103.04 -
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5" inch Flat / metal roof flashing high temp Red EPDM for 5" twin wall
Product Code: 12-602D
RRP: £86.94Excl. Tax: £68.51 Incl. Tax: £82.21 -
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8" inch Standard Fixing Kit
Product Code: 12-SK1--cpy_4
RRP: £52.92Excl. Tax: £18.55 Incl. Tax: £22.26 -
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7" inch Residential - Low Temperature Black EPDM Masterflash No. 7 (6"-11" 152mm-280mm)
Product Code: 12-701--cpy_1
RRP: £92.62Excl. Tax: £59.91 Incl. Tax: £71.89 -
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6" inch Twin Wall Lead Based Flat Flashing (019)
Product Code: 30915191DW
RRP: £106.40Excl. Tax: £78.99 Incl. Tax: £94.79 -
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5" inch Twin Wall flue 30/45 Flashing (017)
Product Code: 030913171DW
RRP: £127.47Excl. Tax: £67.56 Incl. Tax: £81.07 -
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5" inch Black Twin wall Flue Storm Collar
Product Code: 55-125-082
RRP: £65.35Excl. Tax: £38.10 Incl. Tax: £45.72 -
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7" inch Tiled roof Flashing - aluminium base & silicone high temp upstand for 7" twin wall flue
Product Code: 12-201RESHT--cpy-5
RRP: £96.99Excl. Tax: £81.90 Incl. Tax: £98.28 -
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5" inch Flat / metal roof flashing EPDM for 5" twin wall
Product Code: 12-601--cpy_6
RRP: £89.99Excl. Tax: £43.99 Incl. Tax: £52.79 -
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8" inch Tiled roof Flashing for 200mm twin wall flue 8-11" 200-275mm
Product Code: 12-201RES--cpy_1
RRP: £88.99Excl. Tax: £60.18 Incl. Tax: £72.22 -
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6" inch Standard Fixing Kit
Product Code: 12-SK1--cpy_2
RRP: £52.92Excl. Tax: £18.55 Incl. Tax: £22.26 -
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Nu lead base flashing Low Temp Black EPDM Size 125-225mm - size 15
Product Code: 12-15-LD-TILEb
RRP: £289.80Excl. Tax: £79.99 Incl. Tax: £95.99 -
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5" inch Residential - Low Temperature Black EPDM Masterflash No. 6 (5"-9" 127mm-228mm)
Product Code: 12-601--cpy_1
RRP: £89.99Excl. Tax: £43.99 Incl. Tax: £52.79 -
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6" inch Flat / metal roof flashing high temp Red EPDM for 6" twin wall flue
Product Code: 12-702-4
RRP: £134.99Excl. Tax: £85.86 Incl. Tax: £103.03 -
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6" inch Black Twin wall Flue Storm Collar
Product Code: 55-150-082
RRP: £70.46Excl. Tax: £29.67 Incl. Tax: £35.60 -
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7" inch Twin Wall flue Storm Collar (13A)
Product Code: 03091813ADW
RRP: £40.18Excl. Tax: £26.49 Incl. Tax: £31.79 -
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8" inch Black twin wall flue Storm Collar
Product Code: 55-200-082
RRP: £46.47Excl. Tax: £29.55 Incl. Tax: £35.46 -
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4" inch Twin Wall flue Flat Flashing (019)
Product Code: 030910191DW
RRP: £127.61Excl. Tax: £54.79 Incl. Tax: £65.75 -
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Tile Grey SILICONE High Temp Flashing 175-275mm AL- 760 x 660mm
Product Code: 12-2-TILEHT
RRP: £182.70Excl. Tax: £57.09 Incl. Tax: £68.51 -
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6" inch Tiled roof Flashing Silicone 2 High temperature 8-11" 200-275mm
Product Code: 12-201RESHT--cpy
RRP: £96.99Excl. Tax: £81.90 Incl. Tax: £98.28 -
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Tiled Roof Flashing 3-8 inch suitable for 5" internal dia twin wall flue
Product Code: 12-1-TILE-c
RRP: £69.99Excl. Tax: £45.99 Incl. Tax: £55.19 -
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6" inch Tiled roof Flashing - aluminium base & silicone high temp upstand for 6" twin wall flue
Product Code: 12-201RESHT--cpy-4
RRP: £96.99Excl. Tax: £81.90 Incl. Tax: £98.28 -
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8" inch Twin Wall Lead based Flat Flashing (019)
Product Code: 030920191DW
RRP: £151.86Excl. Tax: £80.49 Incl. Tax: £96.59 -
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7" inch Twin Wall Lead Based 5/30 Flashing (018)
Product Code: 030918181DW
RRP: £172.91Excl. Tax: £91.65 Incl. Tax: £109.98 -
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5" inch Twin Wall flue Storm Collar (13A)
Product Code: 15-125-082
RRP: £35.99Excl. Tax: £19.08 Incl. Tax: £22.90 -
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7" inch Tiled roof Flashing Silicone 2 High temperature 8-11" 175-275mm
Product Code: 12-201RESHT--cpy-3
RRP: £96.99Excl. Tax: £81.90 Incl. Tax: £98.28 -
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4" inch Twin Wall flue 30/45 Flashing (017)
Product Code: 030910171DW
RRP: £152.85Excl. Tax: £65.62 Incl. Tax: £78.74 -
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5" inch Twin Wall flue Wall Sleeve (014)
Product Code: 15-125-098
RRP: £38.80Excl. Tax: £21.59 Incl. Tax: £25.91 -
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4" inch Twin Wall Round Finishing Plate 90 deg
Product Code: 15-125-113
RRP: £47.03Excl. Tax: £25.86 Incl. Tax: £31.03
Twin Wall Flue
Install Black Twin Wall Flues or Stainless Twin wall flue virtually anywhere giving you more choice where you install your stove, wood burner and heating appliance without the need for a fireplace or chimney stack. The flue pipe is able to run internally and externally passing through floors or walls to accommodate your required flue route and take the exhaust gases out safely. Our premium grade Twin Wall Flue Pipe has been manufactured to the highest level and also offers great aesthetics for your stove or fire place installation. We stock the widest range of sizes and compononents in the UK meaning we can supply you with the right compononents within 1-3 days.
We also offer a Chimney Design Service - talk to us or send us an email about your requirements and we'll try to assist you to select the right Twin Wall Flue for your installation.
We sell two types of Twin Wall Flue Systems - both are HETAS and CE approved: Dinak DW twin wall (EN 1856-1-T450-N1-W-VmL50040-G60) and KC TW Pro 'Fitters Choice' (EN1856-1 T600 N1 W VM L50040 G60). Both are a European made, Class 1 chimney system made from stainless steel with 30mm of high density Rockwool insulation. Stocking both systems in all sizes enables us to fulfill flue orders for domestic, commercial and industrial heating applications, for both condensing and non condensing appliances.
On this page you will find the most common domestic sizes of twin wall chimney flue pipe: 5 inch (130mm), 6 inch (150mm), 7 inch (180mm) and 8 inch (200mm) twin wall flue pipe, as well as 3" (80mm) and 4" (100mm), Black 5" and 6" twin wall flue are also in stock. If you require Black Twin wall flue pipe in any other sizes please get in touch for lead times. For more diameter sizes please go to our other section 'Twin wall and Single Wall Flues Commercial'.
How to fit twin wall flue and what items will I need? Please refer to our 'FAQ and installation advice section'.
Shopping Options
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Twin Wall Flue Pipe 1 metre length (940mm installed) (020) - 130mm Dia
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Twin Wall chimney flue Pipe 440mm (024) - 150mm Dia
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Flexible flue liner 316 grade multi fuel - 150mm 6 inch
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Standard Vitreous Enamel steel pipe
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Black Twin wall Flue 440mm - 150mm Dia
