Assessing the effects of thermal bridging at junctions and around openings

Assessing the effects of thermal bridging at junctions and around openings (IP 1/06) was written by T I Ward and published by BRE in March 2006.

This 6-page paper gives guidance on assessing the effects of thermal bridging at junctions and around openings in the external elements of buildings and how to assess their effect on heat loss or heat gain. It enables estimation of these heat transfers for building regulations compliance calculations. It supports the building regulations for the conservation of fuel and power in all three jurisdictions within the UK. The guidance is primarily intended for junction and opening details that are not as recommended in 'Accredited construction details' or MCRMA/EPIC guidance.

It is a revision of IP17/01 which has been withdrawn.

The contents of the paper are:

• Introduction.
• Building Regulations.
• Numerical modelling.
• Limiting the risk of surface condensation or mould growth.
• Assessing thermal performance.
• References.

--BRE Group

[edit] Related articles on Designing Buildings Wiki

• Accredited construction details ACDs.
• BRE articles.
• Building Research Establishment.
• Conventions for calculating linear thermal transmittance and temperature factors.
• Emission rates in the building regulations.
• Reducing thermal bridging at junctions when designing and installing solid wall insulation FB 61.
• Thermal bridge.
• Thermal imaging to improve energy efficiency in building design.
• Thermographic survey.
• U-values.