1. The Building Regulations 2010. Approved document L2. Conservation of fuel and power in new buildings other than dwellings. 2021 edition. Free download available.
2. BS EN ISO 13789:2017 Thermal performance of buildings – Transmission heat loss coefficient – Calculation method.
3. National Calculation Methodology (NCM) Modelling Guide (for buildings other than dwellings); England 2021 Edition, Wales 2022 Edition.
