Thermal Bridge Analysis (Psi Value Modelling)

Thermal bridging is a major contributor to heat loss within buildings, typically as much as 30% heat loss occurs through thermal bridges in typical construction methods. Our assessors are able to design out thermal bridges and provide solutions to any junction or thermal bridge that will help lower heat loss, improve your SAP rating and of course improve the indoor thermal comfort levels for the occupants.

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With the removal of Accredited Construction Details (ACD's) in 2022 designers and builders are now required to provide independent third party calculations for the proposed junctions and thermal bridges within the dwelling. Failure to do so will result in poor default values having to be assumed within the SAP calculation which will most likely cause most SAP assessments to fail the minimum fabric efficiency standards.

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Typical thermal bridges included in most newly constructed homes include:-

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• Ground Floor / Wall Junction

• Window & Door Openings (head, jambs & cill)

• Intermediate Floor Junctions

• Roof at Eaves

• Roof at Gable

• Flat Roof Perimeters

• Internal & External Corners

• Parapets

• Party Wall Junctions

• Party Floor Junctions

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If you want to know more about Psi Value visit our Psi Value Explained page for a greater in depth look at the benefits of using Bespoke Psi Values.

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