Chimney / Liner Systems

A chimney is a structure for venting hot flue gases or smoke from a boiler stove, furnace or fireplace to the outside atmosphere.

Chimneys are typically vertical, or as near as possible, to ensure the gases flow smoothly. With a modern appliance it is essential to have the correct class of flue, the correct size of flue and also an insulated flue.

We insulate flues with back fill as it keeps the flue rigid, insulated meaning it heats up quickly ensuring the chimney draws effectively. An insulated flue reduces the risk of tar and soot build up so making the chimney safer and prolonging the life of the flue liner. 

Depending on whether you are lining an existing chimney or building a new one from scratch the finest Chimney System on the market is the Pumice (ANKI)– this can be used to build a complete new chimney or to line an existing chimney. The benefits of lining with Pumice are:

  • 65 year life expectancy instead of a 25 year life expectancy as with Stainless Steel Flexi liners
  • It is a natural raw material, made from Icelandic volcanic rock
  • Anki is a product that boasts exceptional insulation and longevity and one that is suitable for all fuel types
  • It can be used for Open Fires, Stoves and Boilers for new builds or existing properties
  • It improves the performance of your appliance, has less soot and tar build up and is chimney fire safe

The most common of all flue systems is the Flexible Stainless Steel Liner which can work out slightly cheaper.

For the installation of a flue system where no chimney exists for instance in a barn conversion or conservatory, a system called HT Twinwall is used which enables the flue to pass quite safely between wooden beams/rafters etc. to within 50mm of combustive material. The pre-fabricated metal chimney can go internal or external.

We recommend four different types of chimney systems...