Know Your Flue and Chimney System

For a comprehensive guide on different flue and chimney systems, it's essential to understand the options available and their applications.

Types of Chimney and Flue Systems

Conventional Flues

  • Brick/Stone Chimneys (Class 1): Traditional chimneys made from brick or stone, suitable for most types of fires and stoves.
  • Pre-fabricated Flues (Class 1 & 2): These systems feature a metal flue cowl on the roof and are compatible with homes that lack a brick/stone chimney.
  • Pre-cast Flues (Class 2): Common in modern buildings, these flues usually have a shallow depth, requiring slimmer fire designs unless modifications are made.
Conventional brick flue diagram
Brick / Stone Chimney
Pre-fabricated flues
Pre-fabricated flue system
Pre-cast flue system

Balanced Flues (No Chimney Required)

  • Designed for properties without chimneys, these are designed specifically for balanced flue gas fires and stoves.  Featuring two pipes, one inside the other, the inner pipe vents combustion gases directly outdoors, and the outer pipe draws in air for combustion.  Made from high-grade stainless steel, these systems can be tailored to various installation needs and can be installed to exit horizontally through an external wall or vertically through the roof.
Balanced flue system diagram
Balanced flue system

Twin-wall Flue Systems

  • Ideal for homes without a chimney, twin-wall flue systems allow the installation of wood burning stoves. These systems are versatile and can be adapted to suit both the interior and exterior aesthetics of a property.

Each system has specific requirements and benefits, making it crucial to choose one that aligns with the heating appliance and the architectural constraints of the property. For more detailed information and guidance on which system might be best for specific installations, consulting with our specialist or a certified installer is recommended.

Conventional brick chimney
Twin Wall Flue System