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Air Testing & Leakage
Air Pressure Testing is not just for new-builds, it can be used to find leakage areas in existing buildings, improve the air tightness and improve/stop drafts..more

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Privacy describes the perceived sound reduction across a wall, a function of both sound insulation and background noise...more
Part F
Means of Ventilation

Bristol - Domestic Carbon Emission Calcs - 0117 212 0189
The office that covers this area is: Cardiff
Phone Number: 0117 212 0189 Email: bristol@e2consultants.co.uk
SAP Calculations is sometimes referred to as SAP Conversion Calc, Part L1B Compliance, SAP Conversion Calculations, SAP Conversion Calcs, SAP Conversion Assessment, SAP Conversion rating.
Why Do I Need A SAP Calculation?
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.
If you are selling a home before it has been built, you will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA).
Under Part L of Building Regulations in Bristol, since 2006, any new dwellings or conversions need to have a SAP Calculation and Predicted EPC before any work can begin.
What Is A SAP Calculation?
A SAP rating represents the cost of energy required by a property over the course of a year with a score of 100 meaning there's no energy cost. This is calculated from lighting, heating, hot water systems, renewable technolgies used and the elements of structure. The higher the score, the lower the cost of running it.
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?
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.
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 Bristol.
Our other services include:
Domestic Carbon Emission Calcs can also be known as:
TER DER Calculation, SAP Assessment, Standard Assessment Procedure, Domestic Carbon Emission Calc, Domestic Carbon Emission Calculation, SAP Rating, TER DER Calc, SAP Calculations, SAP Calc,


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