Retrofit it once. Retrofit it right.
Master the science of deep retrofit in five focused hours. Diagnose damp, draughts and heat loss, then fix them in the right order, so the building never needs re-retrofitting and the money is not wasted.
The same building science that certifies new Passivhaus buildings is what makes a retrofit succeed. Taught by the practice that does both.
The hardest work in the built environment is fixing the homes we already have.
Done wrong, a retrofit traps moisture, breeds mould and has to be undone. Done right, it turns a draughty, damp home into a healthy, comfortable, low-cost building. The difference is the building science, and that is exactly what this gives you.
Most of the buildings we'll use in 2050 are already standing.
Across the UK, deep retrofit is moving fast: social-housing decarbonisation, EnerPHit, and a sharper focus on damp and mould risk under Awaab's Law. The demand for people who can do it properly is only growing.
Around 80% of the buildings we'll use in 2050 already exist.
Which makes deep retrofit the single biggest job in the built environment, and the people who can do it right the most sought after. Five hours here gives you the foundation.
Understand the building, and the decisions get easy.
Diagnose before you spend
Read what a building needs, where it loses heat, where moisture moves, where it will fail, before you commit a single euro to materials.
Get the sequence right
Insulation, airtightness, ventilation, heat. In the wrong order they fight each other. In the right order they compound.
Avoid the re-retrofit
The most expensive retrofit is the one you have to do twice. Learn the common mistakes and design them out from the start.
Make budget-conscious calls
Spend where it counts and stop where it does not. Cost-effective strategies for the measures that move performance.
Who it's for.
Architects & designers
Advanced techniques and best practice for designing deep-retrofit solutions that revitalise existing buildings without storing up problems.
Contractors & trades
Stay competitive and meet the rising demand for energy-efficient retrofit. Understand why a detail works, not only how to build it.
Serious self-builders & homeowners
Taking on a real retrofit? Make confident, well-informed decisions and avoid the mistakes that cost the most to put right.
The full retrofit sequence, start to finish.
Quizzes throughout to lock in the key decisions at each stage, with a certificate on completion.
Enrol for €99What you get for €99.
5 hours of video across 16 lessons, the complete deep-retrofit sequence.
Science-based principles you can apply to any building, not cookie-cutter recipes.
Quizzes throughout to lock in the key decisions at each stage.
5 CPD points and a certificate of completion.
On-demand, lifetime access. Pause, carry on, return whenever it suits you.
Satisfaction guarantee. If it is not for you, we will make it right.
Tomás O'Leary
Tomás delivered the first certified Passive House in the English-speaking world and has spent over 30 years leading mosart across design, consultancy and education. He teaches the science of retrofit from real projects, the same rigour he brings to certifying new buildings.
"A game changer. It gave me the confidence to make smart decisions and avoid mistakes I was 100% about to make." Donal Murphy, graduate
What our students say.
"This course was a game changer for me. It has given me the confidence to make smart decisions and avoid mistakes I was 100% about to make. Thank you!"
"Good knowledge, and the staff are approachable, able to cater to our understanding without compromising on the standards. A necessity for learning professional skills."
"The on-demand format works really well. You can pause, get on with your day, and pick it back up. The building-science approach means it applies to any project."
Turbocharge your next retrofit today.
The Ultimate Deep Retrofit Masterclass
- 16 lessons, 5 hours of video
- The full retrofit sequence
- Diagnose damp, mould & heat loss
- Quizzes & certificate
- 5 CPD points
- Satisfaction guarantee
The full professional qualification: 13 modules, the complete PHPP, the PHI exam and certification. The natural next step after this course.
Explore the CPHD →Watch the trailer free, no card needed. And if the course is not what you needed, we will make it right.
Common questions.
Do I need a technical background?
How long do I have access?
Does it count for CPD?
Is it relevant to UK buildings and regulations?
What if it's not right for me?
How does this relate to the Certified Passivhaus Designer course?
Anyone taking on a retrofit will benefit from this.
Five hours that change how you approach every existing building. On-demand, CPD-accredited, satisfaction guaranteed.