Approved Document J
Combustion appliances and fuel storage systems
About Approved Document J
Approved Document J gives guidance on combustion appliances and fuel storage systems. It covers how appliances get their air, how the products of combustion are discharged safely, and how heat and fuel storage are kept from harming the building and its surroundings.
What it covers
- Air supply to combustion appliances
- Flues, chimneys and the discharge of combustion products
- Protection of the building from the heat of an appliance
- Guidance for gas, solid fuel and oil-burning appliances
- Providing information about installed appliances and flues
- Oil and other liquid fuel storage
Approved Document J: combustion appliances and fuel storage systems
Ministry of Housing, Communities and Local Government
Figures in the current edition
Diagram 1 Boundaries in this Approved Document
Diagram 2 Chimneys and flues
Diagram 3 Draught diverter and draught stabiliser
Diagram 4 Types of installation
Diagram 5 Fireplace recesses
Diagram 6 The functions of hearths
Amendments and circulars
- Approved Document J 2022 amendments: circular 03/2022
Current · 2022 · Circular
- New edition of Approved Document J - circular letter update, 30 September 2022
Current · 2022 · Letter
- New edition of Approved Document J - circular letter, 29 July 2022
Current · 2022 · Letter