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Building Regulation Part L Compliance

New build (Residential)

PART L building regulations When building a new dwelling you are now required to submit a report which includes SAP calculations to demonstrate your building complies with Part L of the Building Regulations. The SAP Rating provides a Target Emission Rate (TER) and Design Emission Rate (DER) for the proposed dwelling. Upon completion of the works a pressure test to show that the air permeability is within reasonable limits will be required before final adjustment calculations can be produced to confirm the as-constructed building is consistent with the DER and to enable an Energy Performance Certificate to be issued for the completed dwelling.

For free initial advice in relation to the above please contact Greg Parry on 0151 524 0828 or email greg@parry-partners.co.uk

Click here to download a copy Part L1A Conservation of Fuel and Power in New Dwellings

Residential Extensions and Conservatories

PART L building regulations When building a non separated conservatory or extension with a window and door area exceeding 25% of new floor area. A full SAP report will be required to demonstrate compliance.

Parry & Partners can assist you to gain approval when the areas exceeds 25% by the use of renewable energy sources within the design. To do this two separate reports are provided, one on the existing dwelling with a notional compliant extension and the second on the existing dwelling with the extension as proposed plus the additional improvements. The purpose of providing two reports is to indicate that the Design Emission Rate from the proposed enlarged dwelling, is no greater than that of the existing dwelling with a compliant extension of the same size and shape.

For free initial advice in relation to the above please contact Greg Parry on 0151 524 0828 or email greg@parry-partners.co.uk

Click here to download a copy Part L1B Conservation of Fuel and Power in Existing Dwellings.

Renovation and refurbishment

When refurbishing a property it is necessary to be aware that if more than 25% of any existing thermal element is affected by works then the whole element should be improved to the required target U-value for that element. Parry & Partners can provide all appropriate documentation to demonstrate compliance or trade-off your obligation. Although the method of compliance for Refurbishments and Conversions is generally an elemental approach, a SAP Report will be required to enable an Energy Performance Certificate to be issued for the completed dwelling.

For free initial advice in relation to the above please contact Greg Parry on 0151 524 0828 or email greg@parry-partners.co.uk.

New Build (Commercial)

PART L building regulations When building a new commercial building you are now required to submit SBEM & Solar gain calculations to demonstrate your building complies with Part L2a of the building regulations. The report provides a Target Emission Rate ( TER ) and Building Emission Rate ( BER ) for the proposed building. Upon completion of the works a pressure test to show that the air permeability is within reasonable limits may be required before final adjustment calculation can be submitted to reflect any changes during construction and confirm the as-constructed building is consistent with the BER. Also a Commercial Energy Performance Certificate must be submitted to building control before a completion certificate can be issued.

For free initial advice in relation to the above please contact Greg Parry on 0151 524 0828 or email greg@parry-partners.co.uk.

Click here to download a copy Part L2A Conservation of Fuel and Power In New Commercial Buildings

Commercial Building Extensions

PART L building regulations When building an extension of over 100m2 and more than 25% of the floor area of the existing building SBEM calculations will be required by building control. Additionally, if the existing building has more the 1000m2 of floor area, additional improvements to the existing building will be required to demonstrate compliance.

For free initial advice in relation to the above please contact Greg Parry on 0151 524 0828 or email greg@parry-partners.co.uk.

Click here to download a copy Part L2B Conservation of Fuel and Power in Existing Commercial Buildings

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Building Regulation Part L UK

Building Regulation Part L conservation of fuel and power in new non-domestic buildings gives general guidance on meeting Building Regulations Part L compliance.

The purpose of the Simplified Building Energy Model is to produce consistent and reliable evaluations of energy use in non-domestic buildings for Building Regulations Part L Compliance. Although it may assist the design process, it is not primarily a design tool.

Part L of the Building regulation compliance

This can be demonstrated by provision of information on the following criteria:

  1. That the predicted Building Emission Rate (BER) is not greater than the Target Emission Rate (TER) using the Simplified Building Energy Model.
  2. That the fabric of the building envelope and the fixed building services (heating, Lighting and Ventilation) meet minimum design limits.
  3. That reasonable provision is made to limit the effect of solar gains on indoor temperatures.
  4. That the performance of the as-constructed building is consistent with the BER. This will require final adjustment calculation to reflect any changes during construction. On completion a pressure test to show that the air permeability is within reasonable limits will be required.
  5. Satisfactory commissioning of the heating and hot water systems.

Building Regulation Part L compliance

Parry & Partners provides a range of services to ensure stress-free compliance with Part L1A of the Building Regulations, Part L1B of the Building Regulations, Part L2A of the Building Regulations and   Part L2B of the Building Regulations. SAP is used to demonstrate compliance with Building Regulations Part L - Approved Document L1A by comparing the designed Dwelling Emission Rate (DER) with a SAP calculated Target Emission Rate (TER)