Approved Document L: Energy and greenhouse gas emissions - Volume 2: Buildings other than Dwellings (2026 edition)

Product Description

Energy efficient buildings and fixed building services have important roles in achieving net zero targets. The Building Regulations 2010 Approved Document L sets performance standards for buildings!!and fixed building services which aim to conserve fuel and power and minimise greenhouse gas emissions.

This approved document is Approved Document L, Volume 2: Buildings other than dwellings. It gives guidance on how to comply with Part L of Schedule 1 to the Building Regulations and the energy efficiency requirements for buildings other than dwellings. For guidance on domestic buildings, use Approved Document L, Volume 1: Dwellings.

Volume 2: Buildings other than dwellings
Requirement L1: Conservation of fuel and power and minimisation
of greenhouse gas emissions in buildings
Requirement L2: On-site generation of electricity
Regulations: 6, 22, 23, 24, 25, 25A, 25B, 26, 26C, 27, 27C, 28, 40, 40A, 43, 44 and 44ZA

Sections included:

• Calculating the target primary energy rate and target emission rate
• Calculating the building primary energy rate and building emission rate
• Limiting heat gains and losses
• Carbon and energy performance of building services – general guidance
• Carbon and energy performance of building services – system specific guidance
• Air permeability and pressure testing
• Commissioning fixed building services and on-site electricity generation systems
• Providing information to the owner about the building, fixed building services and maintenance requirements
• Replacing thermal elements and limiting heat gains and losses in existing buildings, including extensions
• Work to thermal elements in existing buildings
• Consequential improvements to energy performance
• Appendix A-G