Industry Standard Update 111: Approved Document L: Conservation of fuel and power – Volume 2: Buildings other than dwellings
Date issued: 6 May 2022
Introduction
In April 2022, an updated version of the Building Regulations Approved Document L series was released. Previously these were separated into L1A(1), L1B(2), L2A(3) and L2B(4), but now there are just two: Volume 1: Dwellings(5) and Volume 2: Buildings other than dwellings(6). These approved documents cover England only. The new Building Regulations Approved Document L Volume 1 and Volume 2 came into effect on 15 June 2022. This ISU covers Volume 2: Buildings other than dwellings.
General
Legislation, normative references and current standards have been updated throughout where necessary.
Scope
The new Approved Document Volume 2 covers buildings other than dwellings. It also covers communal areas of buildings other than dwellings but containing dwellings, such as communal areas in a block of flats.
Most of the new information is contained in Sections 5 and 6 and covers the need to limit heat loss through building services. Tables 4.4 and 4.5 give guidance to the minimum insulation requirements for hot water and heating pipework.
There is also the requirement to size any new or fully replaced wet heating systems to be able to work effectively at a flow temperature of 55°C or lower.
Bibliography
- Building Regulations Approved Document L1A: Conservation of fuel and power in new dwellings
- Building Regulations Approved Document L1B: Conservation of fuel and power in existing dwellings
- Building Regulations Approved Document L2A: Conservation of fuel and power in new buildings other than dwellings
- Building Regulations Approved Document L1A: Conservation of fuel and power in existing buildings other than dwellings
- Building Regulations Approved Document L Volume 1: Dwellings
- Building Regulations Approved Document L Volume 2: Buildings other than dwellings.
(This article previously appeared in Registered Gas Engineer’s July 2022 issue)
