Technical newsletters about emerging issues & our latest research

The BSR and Condensation Assessments

Posted on February 28th 2025

A BSR (Building Safety Regulator) submission against Building Regulation Schedule 1 Paragraph C2(c) needs to demonstrate that condensation and mould growth risk has been minimised.  Typically, the guidance in Approved Document Part C would be sufficient however some of the standards listed have been replaced or superseded. This is important as a BSR submission should be compliant with the most …

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Beware Roof Upstands Causing Dwelling Condensation

Posted on February 28th 2025

Increasing numbers of upstands are required on rooftops for placing mechanical plant, such as heat pumps, leading to hygrothermal risks. The risk impacts compliance with Part C and Part L of the Building Regulations. Though the roof is insulated, the upstands are typically not and penetrate above the insultation line.  Upstands that are not adequately thermally broken act as a lightning …

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Home Quality Mark (HQM) to Transition to BREEAM UK New Construction: Residential

Posted on February 28th 2025

The Building Research Establishment (BRE) will be up updating the Home Quality Mark (HQM) assessment scheme to align more closely with BREEAM standards for new residential developments. From April 2025, HQM will transition to BREEAM UK New Construction: Residential, strengthening its assessment framework while maintaining its commitment to high-quality, sustainable homes. This update will simplify sustainability navigation for developers and …

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