Managing Non-Conformities Under PAS2035

Non-conformities represent deviations from the PAS2035 standard requirements that can compromise retrofit quality, energy performance, and building safety. Effective management of these issues is essential for maintaining project integrity and meeting regulatory obligations.

What Constitutes a Non-Conformity?

A non-conformity occurs when any aspect of a retrofit project fails to meet PAS2035 specifications or contractual requirements. This includes:

• Incomplete or inadequate energy assessments
• Retrofit measures installed below specification standards
• Missing or incorrect documentation and commissioning records
• Failure to address identified thermal risks or moisture concerns
• Non-compliance with building control or planning requirements
• Inadequate quality control checks during installation

Non-conformities may be identified at any project stage, from initial assessment through post-completion verification.

Early Identification Systems

Establishing robust identification processes prevents issues from escalating. Key practices include:

• Regular site inspections: Schedule planned visits at critical stages rather than relying on final inspections alone
• Quality control checklists: Use standardized documentation aligned with PAS2035 requirements for each retrofit measure
• Assessment review: Verify that energy assessments contain sufficient detail and accuracy before work commences
• Commissioning verification: Test systems and measures during installation rather than after completion
• Stakeholder communication: Maintain clear reporting channels between site teams, supervisors, and project coordinators

Early detection significantly reduces remediation costs and project delays.

Documentation and Recording

Proper documentation is fundamental to managing non-conformities effectively. For each identified issue, record:

1. Date and time of identification
2. Location and specific element affected
3. Description of the non-conformity with photographic evidence where appropriate
4. Reference to the specific PAS2035 requirement or contractual clause not met
5. Severity assessment (critical, major, or minor)
6. Immediate actions taken to prevent harm or further deviation
7. Root cause analysis where applicable

Severity Classification

Classify non-conformities according to their impact on safety, performance, and compliance:

Critical: Issues affecting building safety, structural integrity, or creating serious moisture or condensation risks. These require immediate work stoppage and remediation before proceeding.

Major: Deviations from PAS2035 specifications that compromise retrofit effectiveness or fail to meet energy performance targets. These must be resolved before project sign-off.

Minor: Non-significant departures from specification that do not materially affect performance or safety. These may sometimes be accepted with formal approval, though remediation is preferable.

Remediation and Resolution

Once classified, develop a remediation plan that addresses the root cause rather than symptoms. Effective remediation includes:

• Clear definition of required corrective actions with timelines
• Assignment of responsibility to specific individuals or teams
• Allocation of budget and resources necessary for resolution
• Documentation of work undertaken to resolve the issue
• Verification that corrective actions achieve conformity with PAS2035
• Follow-up inspection to confirm resolution effectiveness

For design-related non-conformities, reassess thermal modelling and energy calculations following any changes to proposed retrofit measures.

Communication and Closeout

Transparent communication throughout the non-conformity process maintains stakeholder confidence and ensures efficient resolution:

• Immediate notification: Inform relevant parties when non-conformities are identified, particularly building owners and control bodies where required
• Regular updates: Provide progress reports on remediation activities
• Final verification: Conduct independent inspection by personnel not involved in original work where possible
• Formal closure: Document sign-off once the non-conformity is resolved and verified
• Record retention: Maintain complete non-conformity records as part of the project file for audit purposes

Learning and Prevention

Non-conformities provide valuable insights for continuous improvement. Establish processes to:

• Review trends in non-conformities across multiple projects
• Identify systemic training needs or procedural gaps
• Share lessons learned across teams and organizations
• Update quality control procedures and checklists based on recurring issues
• Provide targeted support to underperforming contractors or teams

Organizations that treat non-conformities as learning opportunities rather than merely administrative burdens develop stronger compliance cultures and deliver more consistent retrofit quality.

Regulatory Context

Remember that managing non-conformities is not optional under PAS2035 — it is an explicit requirement of the standard. Building Control may scrutinize how projects handle deviations, particularly those affecting thermal performance or airtightness. Comprehensive non-conformity management demonstrates professional delivery and supports regulatory compliance across energy performance, health and safety, and building control requirements.