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Whether you need cowls, flashing, flexible liners, or terminal guards, look no further than BES for your flue system needs. We’re helping customers source everything from long-lasting cowls to flexible liner.

Have a browse at our full range of flue systems products. We've got it covered no matter what heating and ventilation problem you need new parts for.

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An unbeatable selection of flue system products

For all your flue system needs, we’ve got it! We pride ourselves on having everything covered when looking at your flue system needs. Our full range includes:

B Vents

If there's a B Vent you need, BES has it. Our unbeatable range of B Vents includes boxes for gas fires, adjustable flue bends, terminals, flue vent pipes, wall bands, ridge tile adaptors, raincaps, flashing kits, connectors, tees and many more.


ICID Plus are twin wall insulated flue systems designed to operate continuously with temperatures of up to 450°C. Our range includes ICID plus vent pipes, bends, adaptors, connectors, brackets, bends, firestop floor plates, wall bands, etc.

IL Gas Vent Systems

We have high-quality IL Gas Vent Systems such as flue boxes, hood connectors, adjustable elbows, tee caps, spacers, and wall bands, to help with any flue system need. 

BES stock a wide range of cowls from leading brands such as Brewer, Burford and Colt. Our range includes anti-downdraught spinners, bird guards, cappers, chimney liner adaptors, pot hangers and many more.

Terminal Guards

Available in stainless steel, mild steel or plastic coated, our range of terminal guards includes overflow terminal guards, circular terminal guards and rectangular terminal guards.

Flexible Liners

At BES, we have a wide range of flexible liners, including Triplelock stainless steel flue liners and TechnoFlex Plus double skin flexible flue liners. Whether you are looking for flexible liners suitable for atmospheric gas or kerosene appliances or for gas, oil, seasoned wood, and smokeless solid fuel, we’ve got it! 


Angled, flat, aluminium, silicone, all the types and sizes of flashing available at BES. We also stock V Seal and Schiedel for flue and soil pipe flashing.

Prima Smooth

Prima smooth flue systems are a single skin 316 L stainless steel connecting flue pipe for use with wood and multi-fuel appliances with continuous operating temperatures up to 600°C. Our range includes adjustable pipes, adaptors, double offset, bands, bends, vent pipes and many more.

Experience is everything for us

As a leading industry specialist for over 45 years now, BES can help you get the flue system product you need. With over 15,000 products in stock and an Excellent rating from Reviews.co.uk, you’re guaranteed to get what you need, when you need it, any time you shop at BES.

Flue system essentials delivered in a hurry

 With free delivery on qualifying mainland UK orders, BES aims to get your flue system needs shipped directly in no time at all. If there is a specific product you need and can’t find it on our site, get in touch by calling the team on 08000 801090, and we can help you source it.

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