Retrofit Design & Coordination

PAS 2035:2023 & TrustMark Certification

PAS 2035:2023 is the UK standard for energy efficiency retrofit. It governs planning, design, installation, and quality assurance of retrofit projects. ECOedge is fully certified for PAS 2035-compliant delivery across funded schemes, social housing, and private customers.

TrustMark Certification

Our team holds active TrustMark registration, demonstrating our commitment to professional standards, consumer protection, and quality assurance throughout retrofit delivery.

PAS 2035 Compliance

Every retrofit project is planned, designed, installed and verified against PAS 2035:2023 requirements, ensuring compliance and quality regardless of funding source.

Core Retrofit Disciplines

Retrofit Assessment

A comprehensive energy audit and building survey to understand current performance and identify retrofit opportunities.

→ Energy Performance Certificates (EPCs) and baseline performance modelling
→ Thermal imaging and U-value assessment of building elements
→ Indoor air quality and healthy homes assessment
→ Identification of improvement options aligned with whole-home strategy

Retrofit Coordination

Multi-disciplinary project coordination ensuring seamless delivery and compliance throughout the retrofit process.

→ Contractor liaison and site management
→ Pre-works, during-works and post-completion inspections
→ Quality assurance and compliance verification
→ Programme management and milestone tracking

Retrofit Design

Technical specification and design of retrofit measures aligned with PAS 2035 and whole-building performance targets.

→ PAS 2035-compliant retrofit specifications for all building elements
→ Whole-home planning to optimise fabric performance and system integration
→ Material selection and performance warranties
→ Health and sustainability considerations in design choices

Improvement Option Evaluations

Comparative analysis of retrofit pathways to identify the most effective, cost-efficient and appropriate measures for each building.

→ Cost-benefit analysis across retrofit options
→ Carbon reduction quantification and validation
→ Funding eligibility and scheme alignment assessment
→ Resident impact and co-benefits evaluation

Medium-Term Plans

Strategic roadmaps for phased retrofit delivery across housing portfolios or local authority areas.

→ Prioritization frameworks for large-scale retrofit programmes
→ Phasing strategies aligned with funding and resource availability
→ Supply chain and contractor capacity planning
→ Risk and quality assurance frameworks

Post-EPR Modelling

Energy performance validation and EPC updates following retrofit completion to verify achievement of design targets.

→ Post-retrofit EPC updates and energy ratings
→ Thermal performance validation and as-built modelling
→ Carbon savings verification and reporting
→ Scheme compliance and lodgement support

Quality Assurance

Independent verification and testing to ensure retrofit delivery meets design specifications and performance standards.

→ Air tightness testing and thermal imaging verification
→ Workmanship and material quality assurance
→ Performance testing and commissioning
→ Final sign-off and warranty documentation

Scalable Support for Funded Schemes & Able-to-Pay Projects

Whether supporting ECO, Green Homes Grant, local authority schemes or private able-to-pay customers, we scale delivery to match project volumes and complexity.

→ Scheme compliance and eligibility verification
→ Portfolio assessment and delivery frameworks
→ Funding pathway advice and scheme optimization
→ Programme delivery support and contractor coordination