Approved Document J

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