Information required

SAP calculations

All the support required to ensure
every project achieves a pass

SBEM calculations

Cost effective and practical
solutions to achieve compliance

Air leakage testing

Test certificates available
within 24 hours

Energy Statements

Satisfy Planning requirements
such as London Plan policy 5.2

Information required in order to undertake tests and calculations

Air leakage testing

Prior to attending site we shall require the following information:

  1. Floor plans and section drawings;

  2. Design-stage SAP reports for the dwelling that is to be tested;

  3. Contact details for the site we are to attend; and

  4. Confirmation that the dwelling is ready to be tested (please see our guide on how to achieve a better air leakage test result).

SAP calculations for new-builds and conversions

In short, we require the following information:

  1. A full set of architectural drawings.

  2. Construction specification.

  3. Mechanical and electrical specification.

 In detail, the information supplied should include:

  1. Floor plans, elevation and section drawings;

  2. Details of the dwellings location and orientation;

  3. Specification for the construction of all floors, roofs and external walls;

  4. Specification and U-value for all external windows and doors;

  5. Details of the primary heating system (such as the make and model of the boiler) and associated controls;

  6. Details of any mechanical extract / ventilation (for example, the number of mechanical extract fans);

  7. The number of standard light bulbs and the number of low energy light bulbs (unless 100% low energy);

  8. Details of the hot water system, including cylinder size (make and model of the cylinder where known);

  9. Details of any fixed secondary heating (such as a wood burning stove); and

  10. Details of any low or zero carbon technology, such as solar hot water or photovoltaics.

SAP calculations for heavily glazed extensions

In order to process the calculations we will require the following information:

  1. Floor plans, elevation and section drawings for both the existing dwelling and the proposed extension;

  2. A detailed construction specification for the proposed extension;

  3. An approximate age and construction type for all floors, roofs and external walls within the existing dwelling (for example, 1970s cavity wall);

  4. A description of all external windows and doors within the existing dwelling (for example, 10 year old UPVC double glazed);

  5. Details of the primary heating system (such as the make and model of the boiler);

  6. Details of any mechanical ventilation (for example, the number of mechanical extract fans);

  7. The number of standard light bulbs and the number of low energy light bulbs (unless 100% low energy);

  8. Details of any hot water storage;

  9. Details of any fixed secondary heating systems (such as open fire place); and

  10. Details of any low or zero carbon technology, such as solar hot water or photovoltaics.

SBEM calculations

In short, we require the following information:

  1. A full set of architectural drawings.

  2. Construction specification.

  3. Mechanical and electrical specification.

In detail, the information supplied should include:

  1. Floor plans, elevation and section drawings;

  2. Details of the buildings location and orientation;

  3. Full construction specification;

  4. U-value for all windows and doors;

  5. Details of all heating, ventilation and air conditioning systems, and the rooms they serve;

  6. Hot water system specification, including cylinder size;

  7. Full details of the lighting within each room, including lamp types and all lighting controls; and

  8. Details of any low or zero carbon technology, such as solar hot water, photovoltaics, or wind turbines.

Where possible please provide details of the make and model of all mechanical and electrical installations.

Part G water calculations

In order to produce these calculations we will need details of the fittings in each dwelling. Specifically we require:

  1. The flow rate of the kitchen tap.

  2. The flow rate of WC and bathroom taps.

  3. The bath volume.

  4. The flush volume of WCs.

  5. The flow rate of showers.

  6. The make and model of the dishwasher.

  7. The make and model of the washing machine.

  8. Details of any water softener.

  9. Details of any rainwater or greywater harvesting.

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