Our Services

SAP is the government approved method of assessing and measuring the energy rating of any new build dwelling as required by Part L1 of the Building Regulations (and regional variants). It is typically required for new houses but you may also require a SAP calculation for a conversion or extension. 

SBEM Calculations are used to demonstrate the compliance of new build commercial properties as required by Part L2 of the Building Regulations (and regional variants). As well as being a mandatory requirement for new build commercial properties, some extensions and conversions may also require an SBEM calculation. 

Psi-Values are used to calculate a building's overall heat loss at a junction (also referred to as non-repeating thermal bridges). This differs from U-Values which only determine the heat loss through thermal elements. The thermal bridge is an area of a building that can have significantly higher heat transfer than the surrounding materials and occurs where two thermal elements meet.

 Following the move to the current Building Regulations in June 2022 mandatory compliance came into effect in the form of overheating assessments which are calculated against Part O of the Building Regulation. While the measures in Part O are not designed to guarantee comfort, they are there to protect the occupants’ health and welfare.   

When submitting a planning application for a new development, you may be required to submit an Energy Statement, which is determined by the Local Council Policy. An Energy Statement, or Energy Strategy Report, demonstrates how your project will adhere to local energy efficiency targets.

Essentially, a Sustainability Statement is a comprehensive document that covers all aspects of the environmental impact of a planned development and will include sections on (amongst others): Health & Wellbeing, Waste, Water, Biodiversity, Energy, Pollution and Material Selection.

The climate emergency is driving a requirement to deliver highly performing buildings, with operational energy use consistent with net zero targets. To deliver this, design teams need access to tools and techniques that can reliably model in-use energy performance based on design proposals, and that can help inform design proposals.

A U-Value calculation is a computer-based assessment that measures the total thermal resistance of a structure. The unit of measurement for U-Values is given as W/m2K (Watts per square metre degree Kelvin); these are calculated through an approved U-Value Calculator which takes into account the material thickness and conductivity (K-Value).

Water efficiency calculations are required for all new build dwellings in order to comply with Part G of the Building Regulations, which covers sanitation and hot water safety. They are undertaken to measure the flow rate from sanitary appliances including, taps, showers and also water used by ‘white good’ appliances.