Offices Nationwide

Air Testing
As part of thermographic surveys we can also use an air Pressure testing kit to depressurise the building and help detect any air leakage within the property..more

Sound Transmissions
Paths can be interrupted by insulation and blocking air paths. A material's insulation is governed by mass, stiffening and damping...more
Part L1B
Conservation of fuel and power in Existing Dwellings

Portsmouth - Domestic Carbon Emission Calc - 0239 366 0106
The counties covered by this office are:
Dorset, Wiltshire, West Sussex, Isle of Wight, Channel Islands, Hampshire,
Phone Number: 0239 366 0106 Email: portsmouth@e2consultants.co.uk
SAP Calculations is sometimes referred to as Part L1B Compliance, SAP Conversion Calcs, SAP Conversion Calc, SAP Conversion Assessment, SAP Conversion rating, SAP Conversion Calculations.
What Is A SAP Calculation?
The higher the SAP rating, the lower the cost will be to run the building. The score represents the cost of energy required by a property over the course of a year with a 100 score meaning there's no energy cost. To calculate the SAP, the assessor uses information relating to lighting, heating, hot water systems, renewable technolgies used and the elements of structure.
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.
Why Do I Need A SAP Calculation?
Under Part L of Building Regulations in Portsmouth, since 2006, any new dwellings or conversions need to have a SAP Calculation and Predicted EPC before any work can begin.
You will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA) if you are planning to sell the property before it has been built.
When changes are made to the heating, hot water provision or air conditioning/ventilation services, it is the responsibility of the builder to provide any On Construction EPCs upon completiong of a new home or conversion into fewer or more units.
How Is A SAP Assessment Undertaken?
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 Portsmouth.
A SAP is done off-site but requires plans and drawings of the site in order to be calculated. Amongst other things, the SAP assessor will determine how good the thermal elements are in the floors and walls and 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.
Our other services include:
Domestic Carbon Emission Calc can also be known as:
Standard Assessment Procedure, SAP Calc, TER DER Calc, TER DER Calculation, SAP Calculations, SAP Rating, SAP Assessment, Domestic Carbon Emission Calculation,


Copyright 2025 E2 Specialist Consultants Limited
Company No. 06728970