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Fireplace and Flue Regulations

Picture of Megan Walden

Megan Walden

Managing Director

Building regulations are vital surrounding fireplaces and flue systems. It is so important to ensure you are fully informed with what regulations relate to your project, fireplace type and flue system.

Document J

Document J is your friend when referring to general notes on solid fuel and gas burning fireplaces. This document indicates distances for flue terminals from roof pitches, horizontal terminals, openable windows and more. It also goes into detail relating to hearth requirements and combustible materials.

Some figures noted on Document J cite specific kW ranges for the fireplace, which will effect the distances required. Therefore, make sure that you have the correct specification details for your chosen fireplace(s) to make the appropriate conclusions.

Manufacturers Manual

However, it is essential to know what your manufacturer says specifically, as their installation manual may stipulate different requirements. A manufacturers installation manual will ultimately override the general Document J figures, due to the more in-depth experience and knowledge of the specific fireplace collection.

Our team at Bespoke Fireplace Designs work closely with you, to ensure you’re fully informed. We will discuss the full details of the appliance and flue system, and help you with your proposals for the surround, materials, and convection air flow required on many chimney breasts.


Contact us today to discuss your unique fireplace project, or make an appointment with one of the design team at our exclusive fireplace studio.