Foundations of Eco-Retrofit at Harrogate College

Get ahead of the curve and be a part of the green recovery with this course for members of the construction industry in the Harrogate area.

Over the last year, despite the pandemic, there has been huge demand from householders wanting to make energy efficiency improvements to their homes. We know demand is there, but we don’t have enough builders to do the work!

This course gives you a starting point for getting into retrofit, the future of the building industry. Large companies have to date taken the lion’s share of energy efficiency work in large social housing projects, but the majority of the UK’s homes are owned privately and will need extensive eco-renovation works done as a part of general improvements and extensions in the coming years. Those homes need your expertise!


"The strength of this course is Nick's depth of experience. You learn from the problems he has solved." -- Tim, Joiner.

Run by experienced retrofit contractors and People Powered Retrofit experts, this two-day practical course will help you:

  • build on your existing knowledge and skills.
  • meet other small businesses and sole traders in the Harrogate area.
  • keep up to date with the latest green building techniques and products.
  • find new opportunities in retrofit.

Who is this course for ?

This course is for joiners, general builders, site managers at small firms who work on any building projects of which Part L applies.

This course is also useful for:


Standard ticket – £175 (+ £14 service charge)

Course Content

Session 1

Drivers and approaches

  • Global and ‘local’ motivations for eco-retrofit
  • Eco retrofit for all house types
  • Base-line energy assessments and the whole-house plan
  • Challenges of ‘incremental’ retrofit

Air-tightness and ventilation

  • Common air-tightness weaknesses
  • Air-tightness scores and the common testing method
  • Common air-tightness products and methods
  • Importance of effective planned ventilation

Fabric heat-loss: Wall and roof insulation

  • Insulation options available for (particularly solid) walls
  • Advantages and disadvantages of various insulation methods and materials
  • Practical and detailing problems in insulating rooms in the roof

Session 2

Thermal bridging and thermal by-pass

  • ‘Lambda’ (k), Resistance (R) and U values
  • Using U values as a tool for assessing building performance
  • ‘Vapour-permeable’ and ‘vapour-control’ methods of insulation
  • Building regulations target U values for retrofit and extensions
  • Principles of thermal bridging and thermal bypass

Floors, windows and doors

  • Advantages and disadvantages of various floor insulation methods and materials
  • Statutory requirements for windows and doors
  • Minimising peripheral heat-loss when installing windows and doors

This course is run by People Powered Retrofit, a not-for-profit service for householders, offering clear, independent advice and support to help plan, procure and deliver retrofit projects to a high standard.

Find out more here