In the UK, the majority of our housing stock is historic, and we are facing two big problems, rising energy prices and the urgent need to reduce carbon emissions if we’re to reach net-zero. The goal of any retrofit is to simultaneously reduce carbon emissions and energy use by upgrading the building fabric and adopting renewable heating solutions.

Our approach in any Retrofit is to first upgrade the building fabric using natural building materials and ensuring vapour open build-ups of breathable materials that allow moisture to move through the building fabric. This characteristic must be preserved to prevent issues like damp and rot.

The use of natural, vapor-open materials, such as lime, hemp, and wood fibreboard, ensures compatibility with historic structures while maintaining their ability to manage moisture effectively. Additionally, these materials help reduce the introduction of synthetic toxins into more airtight living environments, promoting healthier indoor air quality.

Retrofit projects often require extensive work and deep-rooted interventions, making it crucial to plan carefully and get it right from the outset. It is equally important to respect the building’s original construction to prevent long-term damage caused by inappropriate methods, such as impermeable insulation or modern vapor-closed finishes.

For those seeking further guidance, the Scottish Ecological Design Association (SEDA) offers an excellent resource on sustainable retrofitting approaches, providing a good introduction and overview for homeowners and professionals alike.