Thoughtful Living

Interview about retrofit and The Parks
July 18, 2023
Thoughtful Living

1/ When it comes to working with existing buildings, why is retrofitting important to you?

It has never been more important to be able to make the maximum impact with the minimum of resources.  Finding a sustainable way to live encompasses all aspects from people to planet, but also has an impact on prosperity.
 
At a planetary perspective, the UK aims to have reached net zero by 2050.  It is estimated that 80% of the homes that will exist by 2050 have already been built, and if the UK is to have any chance of hitting its net-zero targets, we must tackle the inadequacies of existing buildings.  We cannot rely solely on new build homes to reduce carbon emissions.  A new home designed to be zero carbon in operation (ie where bills you normally pay for heating, hot-water and power are zero) will still use carbon in the making. In a typical new home the carbon used in building it can be about 1/3 of the total emitted over about 100 years.
This means that if we produce a lot of houses in a short space of time, we may quickly release a lot of greenhouse gasses – equivalent to 30+ years of use.  Therefore, the importance of retrofitting existing buildings to reduce carbon emissions cannot be understated.
Retrofit is also vital to creating a healthy home.  A warm, well-ventilated home with adequate natural light is transformative to the health of residents.  Having a direct connection with nature and a sense of place further enhances well-being.
When it comes to prosperity, it is estimated that 2.3m households in England live in fuel poverty, and health issues associated with people living in cold/inadequate housing is estimated to cost the NHS approximately £1.36bn per annum (The Policy Exchange).
 
Good retrofitting that reuses existing buildings and materials not only preserves the character, heritage and retains a window into the past … it also saves carbon and money, and promotes health and well-being. 
 

2/ I’d love to hear about your process of retrofitting the existing buildings at The Parks. What was the starting point for you? What challenges did you face? What did you learn about retrofit from the process?

Rowan Moore describes that ‘seemingly so fixed, (buildings) are always in motion’.  And to contemplate retrofit is to seek out the negotiation between what was, what is and what can be.

At The Parks, the ‘what was’ varied from an existing (part) 16th Century Farm House, to 19th Century brick and timber agricultural barns housing past activities such as grinding or blowing grain - The Grain Mill and The Winnows, and more modern buildings such as the mid 20th Century Dairy.  Environmental improvements were not limited to the buildings, the project also encompassed the setting, land, soil, drainage, planting and biodiversity, to create a shared meadow, wildlife area and pond, as well as private gardens.

 

Working with historic buildings is invariably time-heavy.  Exacting designs are adapted to ‘what is’ on site, being revised and updated accordingly.

We frequently design for new build, where you can work to the highest sustainability criteria.  However, working with existing buildings – their orientation, their existing openings, their existing and often crumbling structure - means that some of the most efficient design moves cannot be enacted.  The strategy takes the form of being the best that it can be, given what has already been built.

 

We had to uncover what we were presented with – to carefully unwrap the building, to peel away the more modern alterations and additions which often had caused damage to original elements or had used highly unsuitable materials.  Working with our highly skilled site team, we salvaged the historical timber, stone and bricks, using an area of the site as our own architectural salvage yard.

 

‘What can be’ is often subject to many constraints.  Well intended planning constraints with the objective to preserve character, often do not reflect the need to also preserve energy and climate.  The Linhay, which is a traditional single-sided barn, had to remain predominately facing into the farmyard.  We were permitted the introduction of opening roof lights to the rear, and a set of double doors.  Through, carefully placed new openings, coupled with vaulted ceilings throughout we were able to provide cross- and stack-ventilation respectively, despite the constraints.

 Thankfully, we were able to satisfy our desire to promote fossil fuel free living by installing state of the art Air Source Heat Pumps (rather than oil or LPG typical of rural properties), and provision for EV charging - something we do for all projects new build or retrofit.

3/ How have the homes at The Parks been designed to be good for the people and the planet, with thanks to retrofitting?

The design of all the 8 new homes at The Parks chimes with our practice’s design philosophy and research.  We have been working at the forefront of sustainable design delivering climate adaptive buildings and landscaping that reduce the demand on the environment and can cope with the impacts of climate change.  We have also championed shared facilities as an alternative for the discerning homeowner, one that encourages community alongside beautiful, sustainable homes.

At The Parks the homes have private gardens, with traditional lawns and terraces, but each also have a share in the communally owned Meadow and shared equipment (Library of Things).  This wonderful piece of land for their pleasure and enjoyment, as well as becoming custodians of this parcel of biodiversity.

Living alongside nature, having a sense of place and community enhances well-being.  Having access to shared facilities, The Meadow, The Farmyard, the Library of Things, encourages interaction between residents and can also help to reduce consumerism by sharing resources.

From re-use of materials to sensitive selection of the new materials being used, we have always tried to reference ‘what was’.  Whether it’s the earthy tones of the rich soil, or the muted green of the Timothy grasses, our work looks to maximise the opportunities inherent in a project to create place as well as homes, and to facilitate the strengthening of supportive communities, an approach we have termed ‘sociable architecture’.

 

4/ Based on your own experience, what advice would you give to beginners on a budget looking to retrofit their home?

The overriding lesson to take from the retrofit works at The Parks has been to work with what is there, and not against it.  Using local materials or re-used/salvaged materials not only can help to reduce carbon footprint, it can also help to reduce costs.  For example, we minimised the site waste taken to landfill, by crushing the demolition waste materials to form aggregate for use on site rather than bringing in new materials.

Sensitive to context and heritage, we repaired and celebrated historic features wherever possible using new steel plates, and special steel ties to brace the old elm and oak beams, and exposing and restoring the old fireplace, and exposing brick and stone where walls did not need to be insulated. Walls and beams were straightened, restored and reset rather than rebuilt.

Tackling a sensitive retrofit project takes time, patience and dedication.  And if a job is worth doing, it’s worth doing well.  It’s often worth saving for work to be done properly, rather than making-do with something substandard.

But don’t shy away from the new or the innovative.  In the words of Jane Jacobs, “new ideas often need old buildings”.  Retrofit isn’t restoration or renovation – it encompasses bringing in new technology or building systems.  This can also be referenced in the design aesthetic too.  The new homes at The Parks are examples where the new meets the old, and it’s exciting to see.

We are only the custodians in time - writing one chapter in the story of a building’s life.

About the author

Jessica Barker

Jessica Barker is a qualified architect and RIBA chartered member, with over 15 years of experience in practice.  Prior to setting up Stolon Studio, she worked for James Gorst Architects, Alison Brooks Architects and Ron Arad Architects.

 

Jessica is passionate about architecture, people and place, these interests have converged in the work of the practice.  Stolon Studio have delivered several co-housing projects, including Forest Mews (2014) and Kaolin Court (2019), and have four other co-housing schemes in construction in London and Herefordshire.  She works for private clients, local authorities, and recently for English Heritage. She has experience in hotels, schools, nurseries, health centres, offices, retail, mixed-use, housing, and one-off housing. 

 

As part of our on-going practice based research, she is currently involved in research into the benefits of multi-generational development and co-housing.  She is also a visiting lecturer and design critic at university.