Why is SAP Needed

Passing the SAP Assessment signifies that the dwelling has a governmentally acceptable reduced carbon emission rate

The SAP Assessment is not new and has been used to assess the efficiency of a dwelling for many years. The methodology has changed since 2005 from passing either the elemental method, the target u value or the carbon index rating to only passing the dwelling emission rate.

The atmosphere is changing and the threat of global warming has encouraged some countries to make changes to the Building Regulation Standards and energy use in buildings. As part of the EU England and Wales have a commitment to implement policy for the reduction and release of carbon emissions.

Some Energy Performance of Buildings Directive states that buildings account for the release of up to 40% of the total carbon emission rate. England and Wales have aimed their policy towards the building process and imparticular Building Regulation Part L1 and Building Regulation Part L2.

The Energy Performance of Buildings Directive (EPBD) aims to reduce the carbon emission released by buildings stimulating change to Part L1 and L2 of the Building Regulations to the future point of zero carbon. Although this may be a long way off changes are apparent already in the building process.

The EPBD calls for a reduced quantity of carbon emissions for each new dwelling

A reduced energy consumption of existing dwellings when converted, extended or changed in use.

As a result the revised Conservation of Fuel and Power for new and existing dwellings now demands that there is a considerable enhancement of dwelling energy usage.

This concerns the dwelling orientation, insulation levels, infiltration rates, efficiency and control of the heating and hot water systems, lighting used and the type of energy to be used for these services.

Gen-Assess

Validating Designed Construction