Offices Nationwide

Air Testing & Leakage
Our engineers use Thermal camera and extensive knowledge of buildings to help find leakage areas within the building and can advice of these.

Noise Disturbance
Building acoustics can help to mitigate the effects of noise disturbance which can have negative effects on your health and well-being...more
Cwmbran - TER DER Calc - 029 2193 0147
The office that covers this area is: Cardiff
Phone Number: 029 2193 0147 Email: cwmbran@e2consultants.co.uk
SAP Calculations is sometimes referred to as SAP Conversion Assessment, SAP Conversion rating, Part L1B Compliance, SAP Conversion Calc, SAP Conversion Calculations, SAP Conversion Calcs.
What Is A SAP Calculation?
The higher the SAP rating, the lower the cost will be to run the building. The score represents the cost of energy required by a property over the course of a year with a 100 score meaning there's no energy cost. To calculate the SAP, the assessor uses information relating to lighting, heating, hot water systems, renewable technolgies used and the elements of structure.
SAP calculations are the Government's Standard Assessment Procedure for Energy Ratings. In order to produce an On Construction EPC (Energy Performance Certificate) or a Predicted Energy Assessment (PEA), a SAP is required, as this is the calculation these certificates are based on.
How Is A SAP Assessment Undertaken?
The crucial information needed for the SAP software relates to the type of dwelling, floors, walls, the roof, windows, doors, lighting, renewable technologies, 'U' values, hot water and ventilation. With this, we can determine if a building complies with Building Regulations in Cwmbran.
Amongst other things, the SAP assessor will determine how good the thermal elements are in the floors and walls as well as how well heat passes through these elements - this is known as a 'U' value. A high 'U' value represents a high amount of heat lost - this is used in the SAP calculation which is done off-site but requires plans and drawings of the site in order to be calculated.
Why Do I Need A SAP Calculation?
You will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA) if you are planning to sell the property before it has been built.
Any conversions or new dwellings need to have a SAP Calculation and Predicted EPC before any work can begin as outlined in Part L of Building Regulations in Cwmbran in 2006.
It is the responsibility of the builder to provide any On Construction EPCs when a home is constructed. This will also apply if a building is converted into fewer or more units (material change of use) and changes are made to the heating, hot water provision or air conditioning/ventilation services.
Our other services include:
TER DER Calc can also be known as:
SAP Calculations, Domestic Carbon Emission Calc, Domestic Carbon Emission Calculation, SAP Rating, Standard Assessment Procedure, SAP Calc, TER DER Calculation, SAP Assessment,


Copyright 2025 E2 Specialist Consultants Limited
Company No. 06728970