STANDARD ASSESSMENT PROCEDURE.(SAP)
New dwellings currently being designed will be required to have a TARGET EMISSIONS RATE (TER) calculation done to satisfy the building regulation plan checking system prior to a plan checking approval notice being issued.
Plus when constructed they will be required to have a DWELLING EMISSIONS RATE (DER) calculation and certificate. This is in addition to the AIR PRESSURE TEST carried out on them prior to a satisfactory completion notice being issued. The Air Permeability Test must be done by an authorised contractor, in accordance with the Air Tightness Testing and Measurement Association (ATTMA) standards, The contractor should be a suitably qualified person preferable ATTMA registered. This requirement for Air Permeability Compliance is the leakage of air in, or out of the constructed building per square metre of the buildings’ envelope (m3/hour), this is at a pressure difference of 50 Pascals (m3/h(.m2)@50pa) between the inside and the outside of the building. The worst acceptable air permeability reading is 10 m3/hr per m3 @ 50Pa.
CONSTRUCTION TIP – SECONDARY SPACE HEATING.
One way to reduce the CARBON EMMISSION RATE figure on the Governments Carbon Index, which is on a scale of 0 to 10, is to install a ‘wood burning stove’ as the secondary heating source. Wood being considered as having little or no CO2 costs to produce and/or transport as it can be, theoretically, locally grown. This is opposed to the electric heating sources, which cost much more to produce from both a financial and a carbon emissions rate point of view.
Shown below is a typical: Energy Performance Certificate. This shows both the Energy Efficiency Rating and the Environmental Impact Rating.
This is an example only and is not based on any particular property.
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