Twin Wall Flue & Single Wall Flue Commercial
Flue Direct is the UK's main supplier of stainless steel multi fuel insulated twin wall flue pipe, selling premium quality HETAS approved twin wall chimney flue in all diameters at the best prices. Our dedicated team of advisors can also provide you with FREE design advice for your twin wall flue system to make sure you have all the parts you need for your flue installation. If you need help with how to install a twin wall flue system you can refer to our FAQ's section or contact us for further advice. We always advise using a HETAS approved installer and to have you chimneys swept by a qualified chimney sweep every 12 months.
We offer unbeatable prices on our twin wall chimney flue which is available in stainless steel or black finish (interchangeable) with a Price Match Promise that if you find a like for like system we guarantee to beat the price. We supply Dinak DW and KC twin wall flue which comes with a 10 year Warranty and have been using this top quality product for years.
We are dedicated to providing a fast and reliable delivery service throughout the UK on all orders, with orders placed before 12.30pm being processed the same day. If you spend over £150 you will receive FREE DELIVERY.
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14" inch Twin Wall 87 Elbow (043)
Product Code: 030135043DWJ
RRP: £451.34Excl. Tax: £218.26 Incl. Tax: £261.91 -
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6" inch Twin Wall flue 15 Elbow (044)
Product Code: 030115044DWJ--cpy
RRP: £91.79Excl. Tax: £60.42 Incl. Tax: £72.50 -
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10" inch Twin Wall flue 15 Elbow (044)
Product Code: 030125044DWJ
RRP: £140.23Excl. Tax: £78.04 Incl. Tax: £93.65 -
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4" inch Twin Wall flue 90 Tee (031)
Product Code: 030110031DW--cpy
RRP: £127.27Excl. Tax: £113.64 Incl. Tax: £136.37 -
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3" inch Soot Collector with Drain (061)
Product Code: 069108061FK
RRP: £23.65Excl. Tax: £13.17 Incl. Tax: £15.80 -
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7" inch Twin Wall Tee Cap (060)
Product Code: 030118060DWJ--cpy
RRP: £52.30Excl. Tax: £40.42 Incl. Tax: £48.50 -
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7" inch Inspection Tee (dry apps.) (521)
Product Code: 180521FK
RRP: £426.40Excl. Tax: £198.43 Incl. Tax: £238.12 -
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14" inch Tee 93° (31A)
Product Code: 069103531ASW2
RRP: £161.31Excl. Tax: £96.95 Incl. Tax: £116.34 -
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10" inch Soot Collector with side drain (613)
Product Code: 06910250613FK
RRP: £54.61Excl. Tax: £30.39 Incl. Tax: £36.47 -
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8" inch Reducing Tee 90° (312)
Product Code: 200312FK
RRP: £48.45Excl. Tax: £117.96 Incl. Tax: £141.55 -
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3" inch Reducing Tee 93° (312)
Product Code: 059008703FK
RRP: £93.40Excl. Tax: £51.98 Incl. Tax: £62.38 -
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7" inch Twin Wall flue 87 Elbow (043)
Product Code: 030118043DWJ--cpy
RRP: £192.76Excl. Tax: £110.33 Incl. Tax: £132.40 -
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12" inch Twin Wall flue 90 Elbow (433)
Product Code: 030130433DWJ
RRP: £307.31Excl. Tax: £140.07 Incl. Tax: £168.08 -
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5" inch Twin Wall flue 93 Tee (31A)
Product Code: 03011331ADW--cpy
RRP: £126.63Excl. Tax: £101.48 Incl. Tax: £121.78 -
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8" inch Twin Wall 135 Tee (030)
Product Code: 030120030DW2
RRP: £283.49Excl. Tax: £169.59 Incl. Tax: £203.51 -
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3" inch Twin Wall flue 90 Tee (031)
Product Code: 030108031DW--cpy
RRP: £118.57Excl. Tax: £105.88 Incl. Tax: £127.06 -
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6" inch Twin Wall Tee Cap with Drain (061)
Product Code: 030115061DWJ--cpy
RRP: £62.67Excl. Tax: £46.64 Incl. Tax: £55.97 -
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10" inch Twin Wall Tee Cap with Drain (061)
Product Code: 030125061DWJ
RRP: £87.21Excl. Tax: £43.92 Incl. Tax: £52.70 -
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12" inch Elbow 87° (043)
Product Code: 0691030043FK
RRP: £220.58Excl. Tax: £122.76 Incl. Tax: £147.31 -
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5" inch Soot Collector with Drain (061)
Product Code: 0691013061FK
RRP: £30.31Excl. Tax: £16.86 Incl. Tax: £20.23 -
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8" inch Inspection Tee (dry apps.) (521)
Product Code: 200521FK
RRP: £512.94Excl. Tax: £239.22 Incl. Tax: £287.06 -
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6" inch Twin Wall flue 45 Elbow (040)
Product Code: 030115040DWJ--cpy
RRP: £80.74Excl. Tax: £55.46 Incl. Tax: £66.55 -
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10" inch Twin Wall flue 45 Elbow (040)
Product Code: 030125040DWJ
RRP: £123.46Excl. Tax: £78.52 Incl. Tax: £94.22 -
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4" inch Twin Wall insulated flue 30 Elbow (042)
Product Code: 030110042DWJ--cpy
RRP: £86.22Excl. Tax: £68.10 Incl. Tax: £81.72 -
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3" inch Inspection Tee (wet apps) (523)
Product Code: 080523FK
RRP: £99.89Excl. Tax: £55.59 Incl. Tax: £66.71 -
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12" inch Twin Wall 93 Tee (31A)
Product Code: 03013031ADW
RRP: £300.27Excl. Tax: £230.75 Incl. Tax: £276.90 -
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8" inch Twin wall Tee Cap with side Drain (613)
Product Code: 0301200613DWJ2
RRP: £84.80Excl. Tax: £49.44 Incl. Tax: £59.33 -
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12" inch Soot Collector with side drain (613)
Product Code: 06910300613FK
RRP: £64.59Excl. Tax: £35.94 Incl. Tax: £43.13 -
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10" inch Soot Collector (060)
Product Code: 0691025060FK
RRP: £47.41Excl. Tax: £26.38 Incl. Tax: £31.66 -
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5" inch Twin Wall flue 135 Tee (030)
Product Code: 030113030DW--cpy
RRP: £216.84Excl. Tax: £104.93 Incl. Tax: £125.92 -
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8" inch Twin Wall 90 inspection Elbow (432)
Product Code: 0301200432DWJ
RRP: £306.34Excl. Tax: £155.86 Incl. Tax: £187.03 -
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3" inch Twin Wall flue 30 Elbow (042)
Product Code: 030108042DWJ--cpy
RRP: £80.07Excl. Tax: £63.25 Incl. Tax: £75.90 -
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14" inch Twin Wall 90 Tee (031)
Product Code: 030135031DW
RRP: £510.56Excl. Tax: £246.04 Incl. Tax: £295.25 -
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4" inch Twin Wall Tee Cap with Drain (061)
Product Code: 030110061DWJ--cpy
RRP: £62.58Excl. Tax: £55.88 Incl. Tax: £67.06 -
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14" inch Elbow 87° (043)
Product Code: 0691035043FK
RRP: £271.87Excl. Tax: £151.29 Incl. Tax: £181.55 -
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6" inch Soot Collector with Drain (061)
Product Code: 0691015061FK
RRP: £34.31Excl. Tax: £19.09 Incl. Tax: £22.91 -
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12" inch Elbow 30° (042)
Product Code: 0691030042FK
RRP: £115.55Excl. Tax: £64.31 Incl. Tax: £77.17 -
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5" inch Inspection Tee (wet apps) (523)
Product Code: 130525FK
RRP: £114.69Excl. Tax: £63.82 Incl. Tax: £76.58 -
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10" inch Reducing Tee 90° (312)
Product Code: 250312FK
RRP: £313.45Excl. Tax: £142.76 Incl. Tax: £171.31 -
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4" inch Soot Collector with side drain (613)
Product Code: 06910100613FK
RRP: £24.15Excl. Tax: £13.44 Incl. Tax: £16.13 -
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6" inch Twin Wall flue 90 Elbow (433)
Product Code: 030115433DWJ--cpy
RRP: £169.58Excl. Tax: £74.19 Incl. Tax: £89.03 -
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10" inch Twin Wall flue 90 Elbow (433)
Product Code: 030125433DWJ
RRP: £259.27Excl. Tax: £118.18 Incl. Tax: £141.82 -
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4" inch Twin Wall insulated flue 87 Elbow (043)
Product Code: 030110043DWJ--cpy
RRP: £152.47Excl. Tax: £109.97 Incl. Tax: £131.96 -
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7" inch Twin Wall flue 90 Tee (031)
Product Code: 030118031DW--cpy
RRP: £196.32Excl. Tax: £100.69 Incl. Tax: £120.83 -
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12" inch Twin Wall 135 Tee (030)
Product Code: 030130030DW
RRP: £525.84Excl. Tax: £265.35 Incl. Tax: £318.42 -
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5" inch Twin wall Tee Cap with side Drain (613)
Product Code: 0301130613DW
RRP: £68.14Excl. Tax: £50.70 Incl. Tax: £60.84 -
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8" inch Twin Wall Tee Cap (060)
Product Code: 030120060DWJ2
RRP: £57.05Excl. Tax: £36.28 Incl. Tax: £43.54 -
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3" inch Twin Wall Tee Cap with Drain (061)
Product Code: 030108061DWJ--cpy
RRP: £57.88Excl. Tax: £51.68 Incl. Tax: £62.02 -
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14" inch Soot Collector with side drain (613)
Product Code: 06910350613FK
RRP: £90.73Excl. Tax: £50.49 Incl. Tax: £60.59 -
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12" inch Soot Collector (060)
Product Code: 0691030060FK
RRP: £57.27Excl. Tax: £31.87 Incl. Tax: £38.24 -
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10" inch Inspection Tee (dry apps.) (521)
Product Code: 250521FK
RRP: £626.89Excl. Tax: £292.14 Incl. Tax: £350.57 -
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5" inch Twin Wall flue 30 Elbow (042)
Product Code: 030113042DWJ--cpy
RRP: £83.88Excl. Tax: £54.26 Incl. Tax: £65.11 -
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8" inch Twin Wall flue 30 Elbow (042)
Product Code: 030120042DWJ2
RRP: £118.89Excl. Tax: £66.17 Incl. Tax: £79.40 -
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3" inch Twin Wall flue 87 Elbow (043)
Product Code: 030108043DWJ--cpy
RRP: £142.16Excl. Tax: £102.53 Incl. Tax: £123.04 -
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14" inch Twin Wall 15 Elbow (044)
Product Code: 030135044DWJ
RRP: £228.62Excl. Tax: £110.23 Incl. Tax: £132.28 -
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6" inch Twin Wall 93 Tee (31A)
Product Code: 03011531ADW--cpy
RRP: £140.86Excl. Tax: £104.82 Incl. Tax: £125.78 -
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10" inch Twin Wall 93 Tee (31A)
Product Code: 03012531ADW
RRP: £257.63Excl. Tax: £197.99 Incl. Tax: £237.59 -
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7" inch Soot Collector with Drain (061)
Product Code: 0691018061FK
RRP: £40.31Excl. Tax: £22.43 Incl. Tax: £26.92 -
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12" inch Twin wall Tee Cap with side Drain (613)
Product Code: 0301300613DWJ
RRP: £100.61Excl. Tax: £63.99 Incl. Tax: £76.79 -
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14" inch Elbow 30° (042)
Product Code: 0691035042FK
RRP: £142.51Excl. Tax: £79.31 Incl. Tax: £95.17 -
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6" inch Inspection Tee (wet apps) (523)
Product Code: 150523FK
RRP: £132.19Excl. Tax: £73.56 Incl. Tax: £88.27 -
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12" inch Reducing Tee 90° (312)
Product Code: 300312FK
RRP: £370.24Excl. Tax: £168.67 Incl. Tax: £202.40 -
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4" inch Soot Collector (060)
Product Code: 0691010060FK
RRP: £21.47Excl. Tax: £11.95 Incl. Tax: £14.34 -
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7" inch Twin Wall flue 15 Elbow (044)
Product Code: 030118044DWJ--cpy
RRP: £107.67Excl. Tax: £70.87 Incl. Tax: £85.04 -
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12" inch Twin Wall flue 30 Elbow (042)
Product Code: 030130042DWJ
RRP: £166.12Excl. Tax: £92.44 Incl. Tax: £110.93 -
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5" inch Twin Wall flue Tee Cap (060)
Product Code: 030113060DW
RRP: £41.77Excl. Tax: £35.87 Incl. Tax: £43.04 -
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14" inch Twin wall Tee Cap with Drain (061)
Product Code: 030135061DWJ
RRP: £152.43Excl. Tax: £76.75 Incl. Tax: £92.10 -
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14" inch Soot Collector (060)
Product Code: 0691035060FK
RRP: £80.42Excl. Tax: £44.75 Incl. Tax: £53.70 -
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12" inch Inspection Tee (dry apps.) (521)
Product Code: 300521FK
RRP: £740.88Excl. Tax: £341.74 Incl. Tax: £410.09 -
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5" inch Twin Wall flue 87 Elbow (043)
Product Code: 030113043DWJ--cpy
RRP: £152.88Excl. Tax: £85.76 Incl. Tax: £102.91 -
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8" inch Twin Wall flue 87 Elbow (043)
Product Code: 030120043DWJ2
RRP: £214.45Excl. Tax: £97.74 Incl. Tax: £117.29 -
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8" inch Soot Collector with Drain (061)
Product Code: 0691020061FK
RRP: £44.46Excl. Tax: £24.74 Incl. Tax: £29.69 -
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14" inch Twin wall 45 Elbow (040)
Product Code: 030135040DWJ
RRP: £214.92Excl. Tax: £104.72 Incl. Tax: £125.66 -
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6" inch Twin Wall flue 135 Tee (030)
Product Code: 030115030DW--cpy
RRP: £235.84Excl. Tax: £122.99 Incl. Tax: £147.59
Twin Wall Flue & Single Wall Flue Commercial
About our Insulated twin wall Chimney Flue Pipe
- Twin wall flue can be used where there is no existing chimney. It can be uses internally and externally and pass through, walls, floors and the roof depending upon the flue route required.
- Our Dinak flue system (EN 1856-1 T450 N1 W VmL50040 G60) and KC Convesa flue pipe range (EN1856-1 T600 N1 W VM L50040 G60) are both HETAS approved and fast and easy to install and due to their quality manufacture, plus they come with a 10yr warranty.
- Suitable for all types of multi fuel applications using wood, solid (coal), oil, gas, diesel, biofuel and pellet appliances.
- Both twin wall flue systems are suitable for condensing and dry applications (you must order seals/joints with each component of flue pipe for condensing applications).
- Our stainless steel, insulated flue systems are available in 3" 80mm, 4" 100mm, 5" 130mm, 6" 150mm, 7" 180mm, 8" 200mm, 10" 250mm, 12" 300mm and 14" 350mm. 5" 130mm and 6" 150mm 7" 180mm and 8" 200 mm are also available in black. Black/stainless twin wall flue are fully interchangeable.
- Widest range of diameters available on the market along with all the variations of components required for both domestic and commercial installations.
- Perfect choice for biomass boiler flue installations.
How to Install a Twin Wall Flue System
Our Chimney flue truly is a 'Fitters Choice' as it comes in all the possible diameters required, with all the possible components for commercial and domestic applications and with the ability to increase flue size going up as necessary. It is a simple push fit joint system that is both fast and easy to install and comes fully welded to ensure a superior finished twin wall system (60mm to combustibles). Please ensure that the finished system is as vertically straight as possible. All domestic flue installations should be carried out by a HETAS approved installer. For condensing applications please order and fit and seals with each component.
The chimney should remain as straight as possible and be high enough to ensure sufficient draught to clear the products of combustion. The height necessary for this will depend upon the type of the appliance, the height of the building, and the number of offsets within the system. However, a minimum flue height of 4.5m should be achieved as recommended in the Building Regulations. All chimneys must comply with the Clean Air Act. The size of the chimney system should be as recommended by the appliance manufacturer and in most cases should not be smaller than the appliance outlet.
Single Wall Stainless Steel Condensing Flue pipe Technical information
This is a modular single skin chimney system manufactured to BS EN1856-1, constructed from AISI 316L fully welded liner and is CE approved. It is suitable for gas, oil and solid fuels and for dry, condensing (wet) or non-condensing applications. We would recommend using our twin wall flue systems for Biomass flue installations.
Working temperature:
250ºC EN1856-1: Chimneys
600ºC EN 1856-2: Liners
200 Pa (No seal required)
Tested for soot fire resistance for chimney lining.