Dec
19
2018
Mason Assessors - Scarborough
 
SAP / On Construction Energy Certificate

SAP (Standard Assessment Procedure) is a calculation method that is contained within UK Part L Building Regulations for dwellings. The SAP calculation provides an assessment of a dwelling’s energy efficiency and carbon performance. SAP ratings are scored on a scale from 1 to 100 where 1 is the worst and 100 will indicate no heating/hot water cost.

Design Stage
Predicted Energy Assessments (PEA’s) must be completed for all New Build Dwellings from 6 April 2006. Building Control require the Dwelling Emissions Rating (DER) to be better than or equal to the Target Emissions Rating (TER) of a Notional Dwelling with equal properties.

On Construction Energy Performance Certificates (OCEPC’s)

Energy Performance Certificates (EPC’s) are required on construction of new domestic properties from 6 April 2008. The EPC being one of a number of documents produced using SAP software for compliance under Part L of the Building Regulations.

L1B Existing Dwellings
From April 6th 2008, as with New Build Dwellings, all buildings that undergo a material change of use (e.g. building converted to apartments) now require a PEA to be handed to Building Control to achieve compliance. Once the property is completed (As Built / on construction) the PEA will be updated to an actual Energy Performance Certificate Many common projects are subject to the guidance of Part L1B of the Building Regulations. These include the extension, alteration, or renovation of existing dwellings, and 'change of use' of other types of buildings into dwellings. When a building is used as a dwelling when previously it was not, buildings that are converted into fewer or more units and have changes made to the heating, hot water provision or air conditioning/ventilation services.

Ideally the following information will be needed to carry out a SAP calculation;

Plans showing the orientation, elevations and sections of the dwelling inc floor plan(s),. These may be provided on paper or in CAD form (AutoCAD)

Site address and postcode

Construction specification. This should give details of;

  • Heating and hot water system to include make and model of boiler, details of heating emitters, hot water cylinder size (if applicable), system controls and any secondary heating system proposed - for example: a gas fire to the lounge.
  • Details of ventilation systems.
  • Details of the internal and external lighting.
  • Construction of floors, walls and roofs, including proposed insulation and any proprietary products.
  • Details of the doors and windows to include sizes, frame material, type of glazing etc.
  • Proposals for any high efficiency heating systems such as air or ground source heat pumps and or any renewable technologies such as Solar or PV panels.

 
 
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