1. The Building Regulations: Approved Document L1A Conservation of fuel and power in new dwellings, Her Majesty Government, 2014.
2. The Building Regulations: Approved Document L2A Conservation of fuel and power in new buildings other than dwellings, Her Majesty Government, 2010.
3. The Building Regulations: Approved Document L1B Conservation of fuel and power in existing dwellings, Her Majesty Government, 2015.
4. The Building Regulations: Approved Document L2B Conservation of fuel and power in existing buildings other than dwellings, Her Majesty Government, 2015.
5. The Building Regulations: Approved Document F Ventilation,2015