SAP Calculations

SAP 2005 and 2009 are the Government’s Standard Assessment Procedure for Energy Rating of Dwellings. SAP is adopted by Government as part of the UK national methodology for calculation of the Energy performance of buildings. It is used to demonstrate compliance with Building Regulations Part F (Northern Ireland) and to provide energy ratings for dwellings.

SAP is calculated by a procedure contained in the Building Regulations, which predicts heating and water costs. These depend on the insulation and aur tightness if the house and the efficiency and control of the heating system. The calculation uses the Research Establishment’s Domestic Energy Model (BREDEM).

The SAP assessment is carried out at the design stage of the build and the calculation is based in the energy balance. This takes into account a range of factors that contribute to energy efficiency, such as:

Materials used in the construction of the dwelling

Thermal insulation of the building fabric

Ventilation characteristics of the dwelling

Efficiency and control of the heating system

Solar gains through the openings of the building

Fuel used to produce space and water heating.

Renewable energy technologies

CPL Services assessors are full accredited with Elmhurst Energy Systems and trained to calculate your SAP assessment from your architect’s drawings and specifications. A predictive EPC is product through SAP at the design stage and once the building is complete, the full Energy Performance Certificate and SAP (as built) calculation is then produced for Building Control.