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The greenest building is the one that already exists

We were heartened by the campaign launched recently by the Architects Journal encouraging the Re-use of existing buildings. RetrofitFirst asks architects to sign up to putting the re-use of buildings first and to work , where possible, with what is already in our built world. The quote above is from last week’s magazine cover and we thought it perfectly encapsulated our own beliefs about working with existing buildings in the south west.

Staddons Cottage was insulated at ceiling level using sheep’s wool between the joists and lime plaster on a new lath structure.

As a practice we specialise in the adaption and re-use of existing and historic buildings, to help make them as sustainable as possible, so naturally we signed up to support the campaign. Our two directors are passionate about sustainability and the historic built environment. With Stuart having expertise in all things eco-tech and Kirsty a qualified Conservation Architect, they make a great combination.

The demolition of existing structures to enable the building of new ones is clearly not a sustainable approach – even if the new building uses less energy. The best approach is to help make our existing building stock more sustainable by reducing unnecessary air leakage, improving insulation in an appropriate manner and making sure they are well looked after by carefully repairing and renewing them.

Old buildings are incredibly adaptable – not something that can always be said of our new building stock, which is often difficult to adapt to new uses. Careful extensions and alterations to older buildings can help to breathe new life into a project, without detrimentally impacting on their historic significance.

Many of our projects use natural, breathable insulation to help reduce heat loss. The use of natural fibre insulation is growing rapidly at the moment, with natural and sustainable options on the market such as sheep wool, find out more here. This is particularly successful when converting loft spaces or barns. Solid walls however don’t always need an additional layer of insulation, with thick stone and cob walls working as excellent heat stores. The image below shows the addition of external wood fibre insulation to a 1970’s extension. This approach works well with existing cavity walls, although insulating internally is often a better approach for listed buildings.

The image above shows wood fibre insulation being added to an existing 1970’s extension, which was rendered with breathable lime. This was part of an overall refurbishment project and included replacing windows and doors to create a a much more airtight construction, Heating was replaced with a wood pellet boiler utilising the RHI.

Historic England encourage owners to look to the past for solutions to problems of heat loss and draughts. Historically home owners would have hung tapestries and had thick curtains or shutters to help keep them warm. A similar approach today and help keep your Listed property warm without unnecessary intervention. See their advice on their website here.

Repairing old windows is also a much more sustainable approach than replacing them with UPVC. Many windows are able to be adapted with the insertion of slim double glazing units with systems like Pilkington Spacia providing a high quality option. Secondary glazing is not always the most practical solution, but can works well and companies like Mitchell & Dickinson in North Devon offer a service to repair and renovate timber windows alongside installing very low impact secondary glazing.

Using recycled materials is an approach we would like to take more often. Rotor, a Brussels-based design practice are creating a website that will help architects and building owners source recycled materials for their build. The UK version of the site can be accessed Here We are pleased to see Exeter’s Toby’s Reclamation Yard on the list, and hopefully more locations in the south west will be added. Rotor have an arm of their business that salvages materials from demolition sites and sorts them for re-use. Hopefully this idea will be will be taken on in the UK and it will become easier to source recycled materials for new build and refurbishment projects.

Transforming a building which transforms lives…

Since our last post on the Salvation Army, the project has made great progress and exciting things have been happening. We are eager to share the next stage of our work, as the team here at LSA have been working hard with their design caps on. From exterior to interior, the design process is now well underway for the redesign of Friars’ Walk.

In our previous post, we highlighted the importance of the building’s history and how the Salvation Army has had a great impact on our society here in Exeter. Friars’ Walk is home to a thriving community, and we believe that the people at Salvation Army are taking the right steps towards the future of this building.

We knew from the outset that the interior spaces required a high-quality design strategy, and we intended each space to bring something new and different to the renovation of this building. This raised a range of considerations, from the function of each space down to the quality of finishes used. The style of design had to be sympathetic to the building’s past, but also needed to enhance and be conducive to modern life. The renovation is partly intended to act as a means of attracting people to use the building, and better appreciate all it has to offer. Opening up the interior spaces allows the building to be versatile, in keeping with its use as a site of varied activities. Below are some of our initial 3D views of the new interior spaces:

Chapel Space looking back on to Entrance Cafe
Chapel Space
Entrance Cafe
New Entrance Area
Basement Area
First Floor Area

First Floor area from double height space

The future is looking bright for Friars’ Walk. We feel privileged to be working with the Salvation Army, and hope that we can offer them something special which will keep their community thriving. This is only the start – so stay on the lookout for updates on what unfolds next!

Design Award from Devon Historic Buildings Trust