How to Prepare for a TrustMark Audit
TrustMark audits are essential quality assurance checks for PAS2035 retrofit projects. Proper preparation ensures your organisation meets standards and demonstrates genuine commitment to retrofit excellence. This guide outlines practical steps to prepare effectively.
Understanding TrustMark Requirements
TrustMark auditors assess compliance against PAS2035:2021 standards and Building Regulations. They examine project delivery, documentation, technical competence, and customer satisfaction processes.
Core Assessment Areas
- Project design and energy assessments
- Installation quality and workmanship
- Health and safety compliance
- Customer communication and satisfaction
- Technical file completeness
- As-built documentation accuracy
Understanding these focus areas helps you prioritise preparation activities.
Assembling Documentation
Comprehensive documentation is critical. TrustMark auditors review files to verify standards compliance. Ensure all project records are organised, complete, and readily accessible.
Essential Documents to Prepare
- Energy assessments: Latest versions showing baseline and retrofit scenarios
- Technical files: Design specifications, product datasheets, installation protocols
- Commissioning records: Equipment testing, performance verification, handover documentation
- As-built drawings: Accurate floor plans showing completed work and any variations
- Customer communication: Quotations, contracts, defect logs, satisfaction feedback
- Compliance evidence: Building Control sign-off, warranty documents, certification
Create a document index so auditors can locate information efficiently.
Quality Assurance Review Process
Before audit day, conduct an internal quality assurance review. This identifies gaps and allows corrective action.
Pre-Audit Internal Check
- Select a sample of recent projects (typically 5-10 completed schemes)
- Review each project against PAS2035 requirements systematically
- Verify technical competence of personnel involved
- Check all documentation is complete and accurate
- Identify any deficiencies or missing records
- Implement corrective actions before audit
Key point: Conduct your internal quality review at least two weeks before the scheduled audit. This allows time to address any issues without rushing.
Competence and Training Verification
TrustMark requires evidence that team members possess appropriate technical knowledge and qualifications.
Competence Requirements
- Design engineers need PAS2035 and building physics knowledge
- Installation supervisors must understand retrofit techniques and site management
- Operatives require relevant technical certifications (Gas Safe, NICEIC, etc.)
- Quality assurance staff need inspection and testing expertise
Prepare a competence matrix showing qualifications, training dates, and relevant experience. Ensure training records are current and accessible. Document any continuing professional development undertaken.
Project Site Preparation
TrustMark auditors may visit active project sites. Ensure they present professional, safe, and compliant conditions.
Site Readiness Checklist
- Health and safety information board displayed
- Risk assessments and method statements available
- Personal protective equipment provision evident
- Site induction records in place
- Asbestos surveys completed where applicable
- Building Control liaison documented
- Quality control inspection records visible
- Safe working practices observed
Technical File Completeness
Technical files form the audit's documentary foundation. Each project should have a complete file containing design rationale, specifications, and verification.
Technical File Elements
- Project scope and retrofit objectives
- Property baseline assessment and energy performance calculations
- Detailed design drawings with dimensions and specifications
- Material specifications and product data
- Installation methodology and sequencing
- Performance calculations and U-value verification
- Commissioning and handover documentation
- As-built records showing completed installation
- Warranty and maintenance guidance
Ensure files follow logical structure and cross-reference between sections.
Customer Satisfaction Evidence
TrustMark values customer feedback. Prepare evidence of customer communication and satisfaction processes.
- Written communication records (letters, emails, notices)
- Customer satisfaction surveys or feedback forms
- Defect resolution records and follow-up documentation
- Post-completion support evidence
- Complaints handling and remedial action records
Final Pre-Audit Preparation
- Designated auditor contact: Appoint one person as primary contact
- Audit schedule: Plan auditor visit dates and project site access
- Documentation location: Designate secure storage area where files are organised and accessible
- Team briefing: Brief staff on audit purpose, procedures, and expectations
- Refreshment arrangements: Plan practical matters for auditor comfort
Effective preparation demonstrates professionalism and commitment to standards. TrustMark auditors recognise organisations that take quality assurance seriously and maintain thorough records.
During and After the Audit
Respond openly to auditor questions and provide requested information promptly. Take notes of any findings. After the audit, use feedback constructively to improve systems and processes. Non-conformances should be addressed with documented corrective action plans.