Fireplaces, chimneys and flues

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Fireplaces, chimneys and flues shall comply with the Technical Requirements, and be designed to ensure efficient operation of the appliance, an adequate supply of combustion air and protection for the building fabric.

Fireplaces, chimneys and flues which comply with the guidance in this chapter will generally be acceptable.

Installations should be provided with an adequate supply of combustion air:

  • as stipulated by statutory requirements and building regulations
  • to ensure satisfactory combustion of fuel and the efficient working of flues and chimneys.

Where a chimney or flue is provided:

  • it should be continuous from the hearth or appliance to the outside air
  • a notice plate containing safety information about any hearths and flues should be securely fixed in an unobtrusive but obvious position within the home.

The design of homes which incorporate chimneys and flues should ensure that all details of the associated elements are considered and appropriate provisions made. This should include the following:

  • Fire risk and separation.
  • Hearths and the constructions adjacent to hearths and flues.
  • Chimneys and flues, including projections through the building.
  • Terminals and outlets.
  • Limitations on the appliance or open fire which can be installed, and fuel which can be used.

Good workmanship and effective supervision during construction are essential to ensure that fireplaces, chimneys and flues function correctly in use.

Fireplaces, chimneys and flues should be designed and installed to minimise the risk of the building catching fire. The design of timber frame construction should ensure that combustible material is:

  • suitably separated from heat sources, or
  • shielded, where permitted.