Approved Document J - Combustion appliances and fuel storage systems

This document covers the air supply, discharge of combustion products and protection of the building, for solid fuel, gas and oil appliances, along with the provision of information for heaths, fireplaces, flues and chimneys. Also included is the protection of liquid fuel storage tanks and bottles and protection against pollution from oil storage tanks and associated pipework.

Download current Approved Document JApproved Document J

PDF file: 2.52MB, 89 pages

2010 edition incorporating 2010 and 2013 amendments: Valid from 6 April 2013

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The requirements in this edition of Approved Document J are as follows:

J1 - Air supply
Combustion appliances shall be so installed that there is an adequate supply of air to them for combustion, to prevent overheating and for the efficient working of any flue

Limits on application
Requirements J1 apply only to fixed combustion appliances (including incinerators).

J2 - Discharge of products of combustion
Combustion appliances shall have adequate provision for the discharge of products of combustion to the outside air.

Limits on application
Requirements J2 apply only to fixed combustion appliances (including incinerators).

J3 - Warning of release of carbon monxide
Where a fixed combustion appliance is provided, appropriate provision shall be made to detect and give warning of the release of carbon monoxide.

Limits on application
Requirements J3 apply only to fixed combustion appliances located in dwellings.

J4 - Protection of building
Combustion appliances and fluepipes shall be so installed, and fireplaces and chimneys shall be so constructed and installed, as to reduce to a reasonable level the risk of people suffering burns or the building catching fire in consequence of their use.

Limits on application
Requirements J4 apply only to fixed combustion appliances (including incinerators).

J5 - Provision of information
Where a hearth, fireplace, flue or chimney is provided or extended, a durable notice containing information on the performance capabilities of the hearth, fireplace, flue or chimney shall be affixed in a suitable place in the building for the purpose of enabling combustion appliances to be safely installed.

Limits on application
None

J6 - Protection of liquid fuel storage systems
Liquid fuel storage systems and the pipes connecting them to combustion appliances shall be so constructed and separated from buildings and the boundary of the premises as to reduce to a reasonable level the risk of the fuel igniting in the event of fire in adjacent buildings or premises.

Limits on application
Requirement J6 applies only to:
(a) fixed oil storage tanks with capacities greater than 90 litres and connecting pipes; and
(b) fixed liquefied petroleum gas storage installations with capacities greater than 150 litres and connecting pipes, which are located outside the building and which serve fixed combustion appliances (including incinerators) in the building.

J7 - Protection against pollution
Oil storage tanks and the pipes connecting them to combustion appliances shall -
(a) be so constructed and protected as to reduce to a reasonable level the risk of the oil escaping and causing pollution; and
(b) have affixed in a prominent position a durable notice containing information on how to respond to an oil escape so as to reduce to a reasonable level the risk of pollution.

Limits on application
Requirement J7 applies only to fixed oil storage tanks with capacities of 3500 litres or less, and connecting pipes, which are -
(a) located outside the building; and
(b) serve fixed combustion appliances (including incinerators) in a building used wholly or mainly as a private dwelling, but does not apply to buried systems.

Archived copies of Approved Document J

Download 2013 amendments2013 Amendments

PDF file: 478KB, 54 pages

Valid from 6 April 2013


Download current Approved Document JApproved Document J -2010 edition incorporating further 2010 amendments

PDF file: 3.71MB, 89 pages

Valid from 1 October 2010

The requirements in this edition were:
J1 - Air supply
J2 - Discharge of products of combustion
J2A - Warning of release of carbon monoxide
J3 - Protection of building
J4 - Provision of information
J5 - Protection of liquid fuel storage systems
J6 - Protection against pollution


Download Approved Document J 2010 amendmentsAmendments to Approved Documents and Compliance Guides 2010

PDF file: 123KB, 4 pages

Valid from 1 October 2010

List of revisions and corrections

This document lists the new regulation number for regulations which have been re-numbered in the 2010 Regulations. 


Download Approved Document J 2010 editionApproved Document J - 2010 edition

PDF file: 4.66MB, 92 pages

Valid from 1 October 2010

The requirements in this edition were:
J1 - Air supply
J2 - Discharge of products of combustion
J2A - Warning of release of carbon monoxide
J3 - Protection of building
J4 - Provision of information
J5 - Protection of liquid fuel storage systems
J6 - Protection against pollution


Download guidance and supplementary information to Approved Document J - 2002 editionGuidance and supplementary information to Approved Document J - 2002 edition

PDF file: 709KB, 63 pages

Valid from October 2004

This documents gives guidance and supplementary information on the UK implementation of European standards for chimneys and flues


Download Approved Document J 2002 editionApproved Document J - 2002 edition

Valid from 11 November 1985 until 1 April 1990

The requirement in this edition was:
J1 - Air supply
J2 - Discharge of products of combustion
J3 - Protection of building
J4 - Provision of information
J5 - Protection of liquid fuel storage systems
J6 - Protection against pollution


Download Approved Document J 2002 editionApproved Document J - 1990 edition with 1992 amendments

Valid from 1 April 1990 until 31 March 2002

Valid from 11 November 1985 until 1 April 1990

The requirement in this edition was:
J1/J2/J3 - Heat producing appliances


Approved Document J 1990 editionApproved Document J - 1990 edition

No download currently available

Valid from 1 April 1990 until 31 March 2002

The requirement in this edition was:
J1/J2/J3 - Heat producing appliances


Approved Document J 1985 editionApproved Document J - 1985 edition

No download currently available

Valid from 11 November 1985 until 31 March 1990

The requirement in this edition was:
J1/J2/J3 - Heat producing appliances


Quick links to other Approved Documents

The regulations cover all aspects of construction and are constantly reviewed. The guidance documents referred to as 'Approved Documents' contain practical ways and explanations of how to comply with the functional requirements of the Building Regulations.

These 'Approved Documents' are separated into 20 parts:

  • Part A - Structure
  • Part B (Volume 1) - Fire safety (Dwellings)
  • Part B (Volume 2) - Fire safety (Buildings other than dwellings)
  • Part C - Site preparation and resistance to contaminants and moisture
  • Part D - Toxic substances
  • Part E - Resistance to the passage of sound
  • Part F - Ventilation
  • Part G - Hygiene
  • Part H - Drainage and waste disposal
  • Part J - Combustion appliances and fuel storage systems
  • Part K - Protection from falling, collision and impact
  • Part L1A - Conservation of fuel and power in new dwellings
  • Part L1B - Conservation of fuel and power in existing dwellings
  • Part L2A - Conservation of fuel and power in new buildings other than dwellings
  • Part L2B - Conservation of fuel and power in existing buildings other than dwellings
  • Part M (Volume 1) - Access to and use of buildings (Dwellings)
  • Part M (Volume 2) - Access to and use of buildings (Buildings other than dwellings)
  • Part P - Electrical safety - Dwellings
  • Part Q - Security - Dwellings
  • Part R - Physical infrastructure for high-speed electronic communications networks
  • Regulation 7 - Materials and workmanship