For Energy Assessors & DEAs
Your EPC Recommendations. Our Delivery. Real-World Results.
Insulation. Draught-proofing. Heating upgrades. Ventilation. Renewables. We implement EPC improvement measures in the right order, to the right standard, with the documentation your clients need to prove it.
The Problem With Energy Improvement Works in Practice
Energy assessors can identify exactly what a property needs. The problem is finding a contractor who will implement those measures correctly — in the right order, with moisture risks understood, and with documentation that actually serves the client. Most general builders will quote for insulation without understanding interstitial condensation. They will upgrade a boiler without improving the envelope first. They will invoice without providing the evidence a landlord needs for MEES compliance. The gap between the EPC recommendation and the real-world result is almost always a contractor problem.
RCB implements EPC improvements properly — in the right order, with the right documentation, to a standard that holds.
What RCB Delivers for Energy Assessors & Their Clients
Fabric-first retrofit, correctly sequenced, with the documentation your clients need to evidence compliance and improvements.
Fabric-First Improvements That Actually Work
- Solid wall insulation — internal or external — designed and installed to the required U-values
- Loft insulation upgrades, including cold and warm roof conversions where the design demands it
- Floor insulation and draught-proofing measures for suspended and solid ground floors
- Window and door upgrades coordinated with structural preparation and internal finish
Heating, Ventilation & Renewable Integration
- Gas boiler replacement and heating system upgrades with full Gas Safe certification
- MVHR and MHRV system installation for airtight and high-performance dwellings
- Heat pump installation coordinated with fabric works for maximum system efficiency
- Solar PV and battery storage works managed as part of a wider fabric improvement project
Whole-House Retrofit — Coordinated and Sequenced
- EPC improvement works planned in the correct order — fabric before services, airtightness before ventilation
- Moisture and condensation risks assessed and managed across the whole dwelling
- PAS 2035-aware approach to retrofit planning and sequencing
- Works documented to support future EPC reassessment and any grant compliance requirements
Documentation for Landlords, Lenders & Grant Bodies
- Completion certificates and works documentation for MEES compliance evidence
- Photographic before-and-after evidence packs for grant applications and compliance records
- Building control sign-offs where structural or regulated work is involved
- Full handover documentation including specifications, U-values, and installation certificates
How We Implement EPC Improvements
A sequenced approach that treats the fabric first — and produces a documented result the client can use.
EPC Review & Works Scope
We review your assessment recommendations with the client, identify the most cost-effective improvement measures, and produce a detailed scope of works and estimate. The client knows what they are committing to before they commit.
Fabric Works First
Insulation, draught-proofing, window upgrades, and airtightness measures completed before any heating or ventilation system is upgraded. The building fabric is treated before the services — not the other way around.
Services & Renewables
Heating upgrades, ventilation systems, and renewable installations carried out after the fabric is performing as intended. System sizing and performance reflect the actual building, not a pre-works assumption.
Documentation & Handover
Full documentation pack issued — specifications, certificates, installation records, and as-built photos. The client has everything needed for a reassessment, a grant application, or MEES compliance evidence.
Why Energy Assessors Refer Clients to RCB
A contractor whose delivery standard reflects well on your professional advice.
Independently Verified
Our 9.96/10 Checkatrade rating from 114 verified client reviews is the evidence behind every referral. When you send a client to RCB, you send them to a track record.
Energy Assessor FAQs
Do you follow PAS 2035 principles for domestic retrofit?
We apply a PAS 2035-aware approach to retrofit sequencing — fabric first, airtightness before ventilation, moisture risks assessed before insulation is specified. We are not formally registered as a Retrofit Coordinator, but we work alongside them and produce work that meets the standards they require.
Can you provide the documentation landlords need for MEES compliance?
Yes. We issue completion certificates, specification records, and photographic evidence packs for all energy improvement works. Where building control sign-off is required for regulated works, we obtain it. Your client has the paper trail they need to evidence compliance to a letting agent, lender, or local authority.
Can you handle the full range of EPC improvement measures in one project?
Yes. We manage insulation, draught-proofing, heating system upgrades, ventilation, and window and door improvements as a coordinated project rather than as separate sub-contracted items. One point of contact, one programme, one set of documents at the end.
Can we refer clients directly to you for their EPC improvement works?
Yes — and many energy assessors do exactly that. Where your client needs to act on an EPC assessment, we provide a detailed estimate for the improvement works. Your client gets a contractor who understands the technical requirements, and you get a referral partner whose delivery reflects well on your advice.
Ready to Discuss Your Clients' Energy Improvement Works?
Tell us about the property types your clients typically own and the measures you commonly recommend. We will explain how we can help close the gap between the EPC and the real building.