Introduction

The Retrofit Coordinator (RC) role under PAS2035 extends far beyond project planning and design. A critical responsibility lies in managing subcontractors effectively to ensure compliance with the standard's rigorous requirements. Poor subcontractor management undermines quality, delays projects, and exposes organisations to significant liability. This article outlines the key duties RCs must discharge when overseeing subcontracted work.

Pre-Appointment Obligations

Competency Assessment

Before engaging any subcontractor, the RC must verify their technical competence and understanding of PAS2035 requirements. This goes beyond basic insurance and references.

• Request evidence of relevant qualifications (City & Guilds, BPEC, CIBSE or equivalent)
• Review previous retrofit projects and outcomes
• Confirm understanding of the retrofit design and specific technical requirements
• Assess familiarity with relevant building regulations and standards

Clear Contractual Framework

Contracts must be explicit about PAS2035 expectations. Generic construction contracts are insufficient. The RC should ensure contracts specify:

• Adherence to the retrofit design specification
• Compliance with PAS2035 principles and procedures
• Requirements for quality assurance and defect rectification
• Insurance and liability provisions
• Health and safety responsibilities
• Record-keeping and documentation standards

On-Site Supervision and Monitoring

Planned Inspections

The RC must establish a structured inspection schedule aligned with critical work stages. This is not optional; PAS2035 explicitly requires active oversight of works.

Key inspection points include:

• Pre-commencement site meetings and inductions
• Before concealing or covering work (insulation, mechanical systems, air barriers)
• Testing of performance-critical measures (air tightness, thermal bridging controls)
• Completion of each trade discipline

Quality Assurance Protocols

RCs must maintain documented evidence of quality control. This includes photographic records, signed-off completion certificates, and test results. Workmanship should be inspected against the retrofit specification and relevant standards. Where defects are identified, the RC has a duty to require remediation before proceeding.

Common quality issues to monitor include poor insulation installation (voids, compression, settling), inadequate air tightness detailing, and incomplete thermal bridge mitigation. Early identification prevents costly rework later.

Documentation and Record Management

Site Records

The RC must ensure comprehensive documentation throughout the project. This includes:

• Daily site diaries capturing work undertaken and any issues
• Photographs at each inspection stage
• Signed-off inspection and test certificates
• Materials delivery and batch numbers (relevant for fire safety and performance claims)
• Subcontractor timesheet records
• Variation orders and change authorisation

Compliance Evidence

These records prove the retrofit was delivered as designed and complies with PAS2035. They become essential if disputes arise, building regulations investigations occur, or performance outcomes are later questioned. Records should be retained for the building's operational life.

Managing Non-Compliance

Defect Response

When subcontractors fail to meet standards, the RC must act decisively. This includes:

• Issuing written defect notices specifying the issue and remedial requirement
• Setting reasonable but firm completion deadlines
• Stopping further work until defects are resolved
• If necessary, arranging remedial work and recovering costs through contractual mechanisms

Performance Monitoring

Regular feedback to subcontractors about performance maintains standards. The RC should track on-time completion, quality metrics, and safety compliance. Repeated failures warrant formal performance reviews or contract termination.

Health, Safety and Site Management

The RC must verify subcontractors' health and safety compliance throughout works. This includes site inductions, provision of appropriate PPE, safe working practices, and incident reporting. The RC remains responsible for site safety coordination under Construction (Design and Management) Regulations 2015.

Practical Recommendations

Effective subcontractor management requires clear communication, consistent documentation, and firm governance. Establish detailed briefing meetings before work commences. Use standardised inspection checklists aligned to the retrofit specification. Hold regular site progress meetings with all trades present. Maintain open communication channels to address issues promptly.

Investment in robust subcontractor management systems protects retrofit quality, ensures genuine compliance with PAS2035, and delivers better outcomes for building occupants. The RC's role as quality guardian cannot be delegated or minimised.