PAS2035:2019 establishes a structured approach to retrofit coordination through risk classification. This framework ensures that retrofit projects receive appropriate levels of oversight, technical expertise and coordination based on their complexity and potential impact on building performance and safety.
The standard defines three distinct risk levels that determine the scope of coordination activities required. Understanding these classifications is fundamental to effective project management and compliance.
Low-risk retrofits involve straightforward interventions with minimal potential to cause unintended consequences or significantly alter building performance. These projects typically address single elements without complex interdependencies.
Even at Risk Level 1, basic coordination remains necessary. A coordinator should verify that works won't create moisture or ventilation issues, and that any new elements integrate safely with existing systems.
Medium-risk projects involve interventions that could have moderate interdependencies or create secondary effects requiring careful management. These works typically affect building fabric or performance in ways that demand coordinated oversight.
Risk Level 2 requires a retrofit coordinator with appropriate technical competence. The coordinator must assess interactions between different works, verify compatibility of systems, and ensure that changes to one element don't compromise others. Pre-work surveys and detailed coordination planning become essential.
High-risk retrofits involve complex interventions with significant potential for unintended consequences. These projects require substantial coordination and specialist input due to their systemic impact on building performance and safety.
High-risk projects demand a retrofit coordinator with extensive experience and technical depth. These coordinators must hold recognised qualifications and demonstrate competence in complex retrofit delivery. The coordination process becomes more detailed, involving specialist surveys, modelling, scenario planning and ongoing site monitoring.
Key point: Risk level assignment isn't fixed at project outset. As surveys reveal building conditions or proposed measures interact differently than anticipated, reassignment to a higher risk level may be necessary. Regular review ensures appropriate oversight throughout delivery.
PAS2035 ties coordinator requirements directly to risk level:
Higher risk levels demand more comprehensive pre-work investigation:
Documentation becomes increasingly detailed as risk rises:
The intensity of monitoring and review increases with risk:
Risk assessment should consider:
When in doubt, assigning a higher risk level provides appropriate protection. The cost of adequate coordination is typically modest compared to the expense of addressing problems arising from insufficient oversight.
PAS2035's risk level framework ensures that retrofit coordination is proportionate to project complexity. By correctly identifying risk levels and implementing appropriate oversight, coordinators can deliver retrofits that perform as intended whilst protecting building occupants and avoiding costly corrections.
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