There’s no licence or qualification required to carry out domestic retrofit work in the UK. Any electrician, plumber, or plasterer can take on a retrofit job today without any formal training. That’s exactly the problem, and also your opportunity.
The retrofit boom is already here, and growing
The UK government is committed to achieving Net Zero by 2050. Around 29 million homes need significant energy improvements to get there. That means anything from insulation, to ventilation upgrades, to heating system changes, to window and door replacements.
Retrofit work is not a separate industry from plastering, or plumbing, or being an electrician. It’s an extension of what trades already do but with government-mandated growth. The question you need to ask yourself is whether you’re positioned to win that work and to do it well.
The problem with retrofits that are done without understanding
Here’s a scenario that happens far more often than it should:
A homeowner wants to insulate their Victorian terrace. A plasterer is brought in to apply internal wall insulation (IWI). The job gets done. Six months later, the homeowner notices damp patches forming on the wall. The insulation has been installed without adequate vapour control and with little-to-no regard to the house’s breathability, meaning moisture is trapped in the original fabric of the building. Instead of it being a great home to live in for the homeowner, the walls are now a great place for mould to live in and grow.
Retrofit done badly doesn’t just cause problems for the homeowner. It causes problems for the trade or company responsible for doing the work. It can cause callbacks, disputes, reputational damage, and even liability depending on the extent of the damage.
Recently, this has been nationwide news. 98% of homes with external wall insulation (EWI) installed under the ECO schemes had at least one major issue that could lead to damp or mould that required further work to fix. That’s not a failure caused by retrofit, that’s a failure caused by a lack of understanding.
What understanding retrofit actually means on site
You don’t need to become a Retrofit Coordinator or hold a specialist qualification to benefit from retrofit knowledge. What makes a real difference on site is understanding:
- How a whole-house approach to retrofit works: why measures need to be considered together, not in isolation
- Common pitfalls with insulation, particularly around moisture, vapour control and thermal bridging
- Which sustainable materials work well in different contexts, and the risks if installed without care
- How to spot when a job might need a more formal retrofit assessment before work begins (like thermal imaging surveys, hygrothermal simulation, etc.)
- How to have better conversations with clients about what they’re trying to achieve and what’s realistic
That last point matters more than ever before, far more than most trades realise. Homeowners are increasingly more informed on heat pumps and insulation and may have had an energy assessment done. The tradesperson that can relate to them and engage with an actual conversation on the topic will build trust in a way that the one who just sends a quote and starts work won’t.
Why it helps you win better work
You stand out when clients are choosing
Most homeowners choosing between different tradespeople are making a judgement call based on trust. Qualifications matter a lot as they are a tangible signal that you’ve invested into furthering your knowledge.
You get found by clients who are looking
Completing Retrofit Skills makes you eligible to be listed on the Retrofit West Trades Directory, a searchable directory used by homeowners looking for tradespeople with retrofit knowledge. More inbound leads mean less time spent looking for work.
You build credibility with architects and project managers
Architects and project managers overseeing bigger retrofit projects increasingly want to work with trades who understand the bigger picture. A plasterer who understands breathability or a plumber who understands how heating systems interact with insulation is a much more valuable collaborator. A qualification in retrofit proves that.
You protect yourself from expensive mistakes
Understanding common pitfalls before you encounter them on site is incredibly valuable. It prevents callbacks, disputes and reputational damage caused by a poorly executed retrofit job that would require more time and money to fix.
About Retrofit Skills Level 2
Retrofit Skills is an accredited Level 2 qualification designed specifically for tradespeople that work in domestic properties. It was designed by Dr. Sarah Price, technical author of PAS 2035/2030 (the UK’s governing standards for retrofit). The course itself is practically-focused and easily accessible.
Retrofit Skills combined online learning modules with three practical sessions, and covers:
- The Principles and Practical Application of Sustainable Retrofit
- Retrofit Process, Costing, Carbon Counting and Funding
- Essentials of Heat Loss, Moisture and Ventilation
- Practical Retrofit Delivery: Building fabric, Services & Low Carbon Technologies
- A practical session based on insulation and airtightness
- A practical session based on heat pumps
- A practical session based on ventilation systems
Retrofit Skills is also designed to fit around a working schedule. The online modules take 1-2 hours each and can be completed entirely flexibly, with practical sessions ran every month around Bristol.
What you get when you complete Retrofit Skills
Retrofit Skills isn’t just about what you learn. There are real benefits that come with our qualification:
- A digital Level 2 Retrofit Skills certificate that you can share with clients and on your professional profiles
- Eligibility for listing on the Retrofit West Trades Directory, putting you in front of clients actively looking for retrofit-aware trades in the local area
- Priority booking for Retrofit West’s Meet-the-Buyer and networking events
- 50% off Green Register membership for your first year, giving you access to our discounted online CPD training events
- The option to be listed on the publicly available Green Register if you become a member and keep training with us, which serves as a further source of inbound enquiries
And remember: there’s currently no requirement for any tradesperson to be trained before carrying out domestic retrofit work. That means the bar is low and lcearing it puts you ahead of most of the competition.
Is Retrofit Skills right for you?
Retrofit Sills is particularly well suited to tradespeople who:
- Already work in domestic properties often and are starting to see more retrofit-related jobs
- Want to understand the bigger picture of how their work fits into a whole-house approach
- Are looking for a way to differentiate themselves in a competitive local market
- Want to reduce the risk of callbacks and disputes on retrofit jobs
- Are curious about sustainable construction and want a solid foundation to build on
Retrofit Skills has also been completed by homeowners that are planning to do their own retrofit DIY projects, as well as by estate agents looking to find ways to increase property value across their portfolio while also thinking about the future economic and environmental sustainability of the homes they manage.