SAP Calculations & EPC | Renewable Energy Statements | Ventilation Testing | MVHR Commissioning | Code for Sustainable Homes | Water Efficiency Calculations | Air-Permeability Testing

We are energy and sustainability consultants specialising in SAP Energy Assessments for Part L1a and L1b compliance, Ventilation Testing and Commissioning including MVHR, MEV and Extract Fans, Air-Permeability Testing, Code for Sustainable Homes and Water Efficiency Calculations for Building Regulations in relation to new residential dwellings or conversions. We can also produce Renewable Energy and Sustainability Statements to support your planning application. 

Projects that we are pleased to have been involved in.

Rusty House, Lewes, East Sussex

Victorian Pumping Station, Cold Ash, Berkshire

Bigbury Hollow, Canterbury

Rusty House, Lewes, East Sussex featured on Grand Designs series 16 episode 7. Our involvement was Air-Permeability Testing and MVHR Commissioning.

Victorian Pumping Station featured on The Restoration Man series 7 episode 1. Our involvement was the production of SAP Calculations and EPC & MVHR Commissioning.

Bigbury Hollow, Harbledown, Canterbury featured on Grand Designs series 23 episode 3. Our involvement was to provide the client with SAP calculations and EPC for Building Control.

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SAP Calculations

The Standard Assessment Procedure or SAP is the Government's approved method for calculating an energy assessment and CO2 emissions for new dwellings. It is used to demonstrate compliance with Building Regulations Approved Document L1A.
All newly constructed dwellings are required to undergo a SAP assessment at design stage and prior to any building work commencing on site then an Energy Performance Certificate (EPC) is issued upon completion before the property can be sold or occupied. An SAP assessment carried out at design stage can confirm specifications such as insulation, heating and hot water systems, and assumed air-tightness are adequate to pass current regulations. 

SAP Calculations are also required for all buildings converted to new dwellings such as flat conversions and barn conversions in order to demonstrate compliance with Part L1B of the Building Regulations and to assesses the thermal efficiency of the proposed building fabric including any upgrades that may be made together with the energy requirements of the proposed heating, lighting and hot water systems of the proposed conversion. A summary report must be issued to Building Control before work commences on site.

SAP Calculations for Glazed Extensions

Glazed Extensions also fall into the category of Part L1b where you may be required to demonstrate that other thermal elements have been improved to off-set the large amount of glazing. We are qualified to produce these calculations and can deal with the requirements of Building Control. See our dedicated L1b page.

Testing for MVHR (Mechanical Ventilation with Heat Recovery), Extract Fans and MEV systems​

If you have an MVHR (Mechanical Ventilation with Heat Recovery) system or MEV (Continuous Mechanical Extract Ventilation) installed, not only will you require the system to be balanced and commissioned but Building Control will also request a Part F Certificate to ensure the MVHR or MEV system is balanced and working correctly. If you have standard Mechanical Extract Fans you will also be asked to provide recorded flow rates to meet Part F ventilation rates.

Air Permeability Testing

Do you require Air-Permeability Testing on a new residential dwelling that has recently been constructed? We can now offer fixed quotations to undertake air-leakage testing by our ATTMA registered team. If you are unsure of any Part L requirements please call us for friendly no-obligation advice.
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Renewable Energy and Sustainability Statements

Renewable Energy and Sustainability Statements can be provided to support new planning applications as required by many local councils particularly in relation to renewable energy. We can assist and include in a Renewable Energy Statement how a reduction in CO2 emissions can be achieved. We are also registered to use the C-Plan system preferred by some councils to support planning applications.

The Code for Sustainable Homes - Introduced in 2008, The Code for Sustainable Homes (CfSH) was developed by the Government as the standard preferred method to promote the design and construction of sustainable new-build homes in England, Wales and Northern Ireland.
Homes are assessed at Design Stage and Post Construction using a rating level between 1 - 6 depending on performance with level 6 being the highest level of sustainability and translates to a Zero Carbon Home. The CfSH sets out 9 key areas of design principles to calculate the environmental impact. Code level 3 and level 4 are the most common assessments that are required by councils and we have vast experience dealing with these Code levels.

Water Efficiency Calculations

Water Efficiency Calculations - Part G of the Building Regulations states that all new properties must comply with specific water performance targets. This means that all new developments must demonstrate that they have met the current criteria by ensuring that no more than 125 litres of water will be used per person per day. After all, water is a resource that is going to come under increased demand as the population of the UK expands so it must be used sparingly.

Please contact us by email info@pebble-energy.com or our contact form to discuss your requirements further.

Accreditations, Qualifications and Useful Links.

Fully accredited and insured to carry out Domestic on Construction Energy Assessments and Code for Sustainable Homes Assessments

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