Learn from real world examples how to reduce risk, achieve airtightness and deliver a successful retrofit project on site.

This course prepares you to [have confidence in the retrofit design,] solve on-site problems and deliver high-quality results.
Using case studies that mirror real-world scenarios, problem-solving exercises, and expert guidance, you will deepen your understanding of the key elements of delivering deep fabric retrofits, including moisture management, airtightness and more, while tackling the unique challenges of retrofit projects.
Discover how to manage retrofit risks and costs, reduce unintended consequences and deliver quality retrofit using tried and tested techniques and applicable to EnerPHit, AECB Carbonlite, PAS2035/20 and other standards and guidance.
This course consists of four live, interactive online sessions led by trainers experienced in retrofit projects of all scales:
Session 1: Introduction to retrofit, whole building approaches, and introduction to moisture in buildings.
Session 2: Exploration of moisture risk, insulation, and problem areas in retrofits.
Session 3: Thermal bridging, airtightness and wind tightness, building services in retrofit.
Session 4: Building services continued, case study tutorial and retrofit in reality - explore what happens in real situations and the practical challenges when a project gets to site.
SPACES AVAILABLE
Retrofit Delivery - January 2026
19th Jan 2026 - 28th Jan 2026
View Schedule
FROM £320 ex. VAT
Online
This course is ideal for a range of roles:
Retrofit Coordinators and Assessors: develop practical understanding to support your existing knowledge.
Designers & Consultants: Gain insights into assessing buildability, supporting contractors effectively, and understanding the practical implications of your designs.
Contractors & Installers: learn how to reduce risk, achieve airtightness and manage for high-quality outcomes.
Clients: learn how to approach projects to manage cost, reduce risk and ensure quality is delivered.
Self-builders: understand what's needed to manage your project successfully and avoid unintended consequences.
Delivery Format: Blended — live online teaching + self-study
Price: £270 ex. VAT (member) / £320 ex. VAT (standard)
Next Start Dates: Regular dates throughout the year
Location: Online
Certification + Credits: 16 PHI Credit Points & CPD Certificate worth 14 Hours
Access & Materials Provided: Tutorials, hard-copy training manuals + appendix with further resources.
Funding Options: CITB grant support & regional funding available
Accessibility: Reasonable adjustments and additional learning support on request
"I've learnt more about the risks that designers and architect face. The course has given me the confidence to ask the right questions if I feel the design isn't the most efficient and cost-effective way for the client. – Stave Hall (W T Hall Builders)"
retrofit Graduate
"The course is technically just what I wanted. The experience of the trainers was second to none. – Adam Harper (City of York Council)"
retrofit Graduate
"Huge thanks to the team for delivering an outstanding retrofit course, a great starting point for doing things the right way! - Pedro Bravo Navarro (WARM: Low Energy Building Practice)"
retrofit Graduate