A technical course for Retrofit Coordinators on designing, specifying and quality-assuring cavity, internal and external wall insulation under PAS 2035, with a focus on moisture and fire risk, Building Regulations compliance and securing valid guarantees.
This course provides a comprehensive technical framework for designing and installing Cavity, Internal, and External Wall Insulation systems under PAS 2035. It equips Retrofit Coordinators to assess property suitability, manage critical moisture and fire risks, and ensure compliance with Building Regulations (Parts L, B, F, J). You will learn to specify BBA-certified systems, oversee critical detailing to prevent thermal bridges, and conduct mandatory on-site quality assurance to secure valid guarantees.
Cavity Wall Insulation (CWI), Internal Wall Insulation (IWI), External Wall Insulation (EWI), Thermal Bridging, Interstitial Condensation, Vapour Control Layer (VCL), Ventilation Assessment, BBA Certification, Approved Document B (Fire Safety), CIGA/SWIGA Guarantees, Party Wall Act, Handover.
This lesson establishes the technical baseline for CWI. You will learn to conduct rigorous suitability assessments - checking cavity width, debris, and DPC clearance - to prevent damp. It covers the mandatory design requirements for ventilation upgrades and combustion safety checks, alongside the essential quality assurance steps to verify a complete fill and secure the 25-year CIGA guarantee.
Here, the focus is on managing the complex hygrothermal risks of IWI. You will learn to distinguish between 'vapour open' and 'vapour closed' systems to prevent interstitial condensation. The lesson emphasises the critical importance of detailing - ensuring continuous insulation at junctions, floors, and window reveals - and the necessity of a robust Vapour Control Layer (VCL) to protect the building fabric.
This lesson covers the high-risk, high-visibility nature of EWI. You will navigate the legal hurdles of Planning Permission and the Party Wall Act. It focuses on strict technical compliance, including Fire Safety (Part B) for taller buildings, the necessity of specifying complete BBA-certified systems (avoiding mixed components), and managing mandatory on-site quality assurance at critical hold points.
