Supply Chain Advice Pack: Managing cavity wall extraction
Introduction
Cavity wall insulation (CWI) has been installed in around 15 million homes across the UK, largely through government-funded energy efficiency programmes. While CWI can significantly improve thermal performance when correctly specified and installed, sector estimates suggest that up to 6 million homes may now contain defective, deteriorating, or inappropriate insulation.
Failed or unsuitable CWI can contribute to damp, mould growth, cold bridging, excess heat loss, and long-term fabric damage. These risks are particularly pronounced in exposed locations, coastal areas, or properties that were unsuitable for CWI at the time of installation. As a result, CWI extraction is becoming increasingly prevalent in whole-house retrofit programmes.
This advice pack focuses on:
• Roles, responsibilities and risk factors relevant to Warm Homes funding (PAS2035)
• When and why CWI extraction may be required
• How decisions are made under the PAS 2035 framework
This pack is aimed at those responsible for assessment, specification and oversight, rather than those delivering the physical extraction works. To understand why CWI extraction is needed in retrofit projects, and how to mitigate contributing factors.
Download the PDF below to access this Advice Pack.
Readers that would like this document in a more accessible format should contact rise@turntown.co.uk.
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