Provisional BER Cert

A Provisional BER Cert can be completed when using initial construction drawings (before dwelling is constructed). This Provisional Cert is only valid for a maximum of 2 years while the dwelling is being constructed. If the dwelling has not been completed within this period, a further Provisional Cert will be required.

A complete BER Cert can be only be completed when the dwelling has been completed to the specification given with the initial drawings. If any changes or improvements have been made, this must be included in a new specification sheet and the builder/client must sign a declaration of conformance that the dwelling has been built in accordance with the Building Regulations or a new specification sheet if better quality materials were used.

How is a BER Cert calculated?

The calculation is based on the energy balance, taking into account a range of factors that contribute to annual energy usage:

• Size, geometry and exposure of the dwelling.
• Material used for construction of the dwelling.
• Thermal insulation of the different elements of the building fabric.
• Ventilation characteristics of the dwelling and ventilation equipment.
• Efficiency, responsiveness and control characteristics of the heating system(s).
• Solar gains through glazed openings of the dwelling.
• Thermal storage (mass) capacity of the dwelling.
• The fuel used to provide space and water heating, ventilation and lighting.
• Renewable and alternative energy generating technologies incorporated into the dwelling

For new dwelling, FER also offer recommendations on the building specification for homeowners and developers to achieve a higher rating on their properties. Our qualified team will able to advise you on how to build a more energy efficient home based on your specific requirement and budget. Our Specification will involve assessing all the building elements in the construction of your property and providing advice and recommendations on the following:

• Calculating thermal resistance and U-values on the insulation used on floor, roof and walls
• Ventilation system (i.e. Passive or Mechanical)
• Windows, doors & Roof lights, etc.
• Lighting
• Air Tightness
• Primary and secondary heating systems (i.e. boiler, fuel used, etc.)
• Heating control systems
• Renewable energy systems (i.e. Solar, etc.)

:: Domestic Building Specification
:: BER Cert online

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