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UK Building Regulations & Standards

Building Regulations and Standards apply statutory requirements on building work in the UK for new and existing buildings. Not only do they provide building standards with regards to design, quality, sustainability and health and safety, but they keep the UK on track with its climate change commitments (targeting an 80% reduction in carbon emissions by 2050). Insulation plays a key part in meeting these requirements and it is important they are adhered to.

Supporting documents are available from the government that provide detailed information on each section of the Building Regulations and Standards. EcoTherm has compiled a summary of the insulation related elements of these documents and provided U-values that will help achieve compliance.


England Regulations

Wales Regulations

Scotland Standards


The figures and information quoted are for guidance only.  Official Building Regulation / Standard documentation should always be consulted. Contact EcoTherm Technical Services for detailed U-value calculations and condensation risk analysis which should be completed for each project.


Did you know?

The fine for contravening Building Regulations / Standards can be up to £5000 and an additional £50 per day until the work is rectified to the correct standard. These fines usually apply to the builder or contractor, however, action can also be taken against the home or building owner who will be required to alter or remove the work. For work that does not meet Building Regulations or has not been rectified, local authorities can withhold completion certificates and the sub-standard work will appear on land search enquiries, affecting the sale of the property.

What is a U-value?

A U-value is the measure of heat loss through a building element (walls, floors or roofs). U-value calculations take into consideration all components of a building element (i.e. U-value calculations for flat roofs typically take the following into consideration; outer & inner surface resistance, waterproofing system, insulation, vapour control layer, deck type, cavities, plasterboard ceiling and plaster skim).

U-value calculations are available free of charge from EcoTherm’s Technical Services or 24/7 with the online U-value calculator.