stone cottage with mature hedges and blue skies

How to make your home more energy efficient

A leading expert on sustainable retrofit offers advice on reducing your home's carbon footprint

By Hugh Metcalf | 12 October 2020

When it comes to energy efficiency, it’s often easier to build into a new property. But all is certainly not lost when it comes to reducing the carbon footprint of older homes. Retrofit architect Mark Elton at Cowan Architects offers advice on how to make your home more energy efficient.

Period home with flint clad exterior and red tiled roof.

Make a long-term plan for the best low-carbon result. Photo: Pixabay

Proceed with caution

While you may think that any investment in reducing your home’s energy needs is worthwhile, it pays to have a plan in place before you begin any work. ‘There’s a risk that spending a bit of money on easy-win carbon reductions prevents deeper reductions later on,’ says Mark, who has a wealth of knowledge on this subject. A Passivhaus-certified architect, he is one of the country’s leading experts on sustainable retrofit and author of the Institute of Sustainability’s Improving the Building Fabric guide.

Take a fabric-first approach

Installing low-carbon heating, such as air source heat pumps and biomass boilers, isn’t necessarily where to begin a retrofit journey. Improving the energy efficiency of your home’s structure is an important factor. ‘Spending a lot of money on a heating source for a building lacking sufficient insulation is probably the wrong priority. You’ll be wasting your investment on an overly powerful heating system if something comes along to reduce the heating demand of your home in the future.’

zetland house manchester passivhaus renovation - grand designs

Ecospheric retrofitted these Victorian townhouses to Enerphit Plus standards. Photo: Rick McCullagh

Make a long-term plan

It’s possible to tackle the renovation in stages. ‘Enerphit is the Passivhaus standard for retrofitting. It focuses quite a bit on the step-by-step benefit of whole home retrofit, as it is an expensive process,’ says Mark. To do this, and ensure your investment is worthwhile, a long-term-plan makes sense of your retrofit ambitions. ‘Each home needs a medium-to-long term plan to understand the endgame for each property type,’ Mark adds.