5-Inch Twin Wall Flues

5-inch twin wall flue is the most popular size on offer at StovesAreUs, so we have a variety of options to choose from here. Twin wall flue systems are designed to allow the installation of a wood burner in almost any situation and are insulated to keep flue gases warm. Explore the full collection below for free UK delivery over £100.
Single Storey Extension/Outhouse Flue Kit - 5" Twinwall Flue (125mm)
£499.00

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Roof Brace Kit - 5" Twinwall Flue (125mm)
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£69.00

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Adjustable Starter Length 470-605mm - 5" Twinwall Flue (125mm)
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£129.00

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5" Rain Cap For Twin Wall Flue - Black
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£49.00

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Black Single Wall to Twin Wall Increaser 4" - 5"
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£25.00

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Adjustable Corner Support Bracket 270-520mm - 5" Twinwall Flue (125mm)
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£79.00

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250mm-350mm Adjustable Twin Wall Flue - Black
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£199.00

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100mm Length - 5" Twinwall Flue (125mm)
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£35.00

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250mm-350mm Adjustable Twin Wall Flue - Black
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£69.00

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Black Flue Liner to Twin Wall Adaptor
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£55.00

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Twin Wall 5-Inch Flue

A 5-inch twin wall flue kit from this range can be used when there is no constructed chimney available. They are often used in period or new build properties without chimneys, as well as in conversions and renovations where the chimney stack has been removed or the stoves desired position is not where the chimney is located.

In this range, you’ll find a choice of 5-inch twin wall flue pipes in black, the perfect versatile colour for completing your set up. On top of this, there are twin wall insulated flue components to suit most requirements in this range, whether it be long, short, or adjustable lengths, or 15-, 30- or 45-degree angled bends.

Frequently Asked Questions

What is the distance to combustible material for a 5" twin wall flue?

Every piece of twin wall flue in our collection has been tested rigorously and can be installed within 60mm of non-combustible material. This is a great advantage when fitting a flue system in a loft space or past ceiling joists as it means your system can be positioned relatively close to the timber work.

What is the outside diameter of a 5" twin wall flue pipe?

The outside diameter of a 5" twin wall flue system measures 7" (175mm). The inner and outer steel skin of our twin wall flue pipe is packed with high-quality insulation which keeps the flue gases warm for a great draught and also ensures the flue can be installed within 60mm of combustible materials.

Can I install a twin wall flue system myself?

Installing a twin wall flue system is a considerable task and may involve equipment like tall ladders or scaffolding if access to your roof is required. Connecting sections of twin wall flue pipe is technically very straightforward and specialist skills are not required, you'll still need to ensure that you follow building regulations for your own safety.

Buy a 5-inch twin wall flue pipe or kit from StovesAreUs today. And make sure to browse our wider range of chimney essentials for flexible flue liners, chimney cowls, and more.

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