SFL Flues & Chimneys
Pottington Business Park
EX31 1LZ

+44 (0)1271 326633 Contact us Today


+44 (0)1271 326633

British-Built Biomass Flue Systems From SFL

Flue systems for biomass boilers

Careful design considerations with draft regulation, explosion relief and fan flued should be considered when designing flues for biomass installations. Performance of the appliances can be significantly affected with incorrect flue design potentially affecting RHI payments and production outputs. With its variety of diameters and custom made options NOVA® is suitable for both domestic and commercial applications.

Important Considerations

Performance of the appliances can be significantly affected by incorrect flue design and many other factors including:

  • Explosion relief
    some biomass boilers stipulate explosion relief must be fitted to the flue system to safeguard any potential for ignition of built-up gasses within the flue system.
  • Draft regulation
    draft regulation should be installed maintain constant draft, this counter acts external forces such as outside temperature changes, barometric pressure and wind.
  • Fan flued
    depending on the appliance manufacture fan assistance may be required to maintain a constant predetermined pressure within the flue. This can be supplied as part of the boiler kit or designed and calculated by third parties such as exodraft.

Why choose SFL?

We are proud of our British built heritage at SFL. All our products are fabricated at our manufacturing centre in Barnstaple, Devon, UK. As well as investment in the latest manufacturing system, we also have an extensive R&D centre ensuring continuous product development and testing to the latest European standards.

UK Flag

British Built

UK manufactured flue & chimney systems.


Full Design Support

Get expert design assistance & full turnkey package support.


Industry Expertise

With over 50 years experience, you are in expert hands with SFL.

Successful project delivery, no matter the challenge.

We’re committed to offering industry-leading support services. That’s why SFL can provide full technical support throughout the whole process of design, manufacture, and supply of your upcoming project. From initial product selection from our range of British built systems to full design and calculations. SFL work with carefully selected installation teams to ensure your turnkey package is carried out on time within budget by seasoned professionals.

Suitable Systems


Twin Wall Flue System


NOVA® insulated twin wall system, a superior, U.K designed, engineered and manufactured flue for quality domestic installations. With its uniquely robust multi barb speedy twist lock jointing system, it's trusted and favoured by installers around the globe. A wide range of components makes any installation a possibility.

Need technical design assistance?

Let's discuss your project

Our team of experienced commercial flue experts are on hand to assist you at every stage of your project. Support includes product selection and application advice including existing system surveys and advice. Working with key installation partners we can provide you with a bespoke customised turnkey package.

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Let's discuss your next project

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