Exmouth Market low energy development

63-69 Exmouth Market

Designed in 2007 when we were also designing our first Passive House buildings, this low energy building in the heart of London's Clerkenwell is at last under construction for the Debenham Property Trust. This new-build development consists of five appartments for rental, including a penthouse with spectacular views across London. It was a planning requirement to retain part of the facade. The flats are designed to provide high occupant comfort by cost-effective means, and it is a credit to the Trust that they have adopted some pioneering measures to provide comfort, health benefits and low energy bills for their future tenants at the same time as cost effectively delivering returns on the value of their investment - returns that they believe will make this building an increasingly valuable asset within their substantial portfolio.

The building contains some novel ideas to cost-effectively reduce cold bridging, including the use of Foamglas as compression blocks to tie the historic brick facade back to the steel frame. This building is also insulated throughout on external walls and party walls. 

The historic facades will all benefit from triple-glazed  sash windows made by the leading English craftsman window company, Mumford and Wood, and which have been developed in collaboration with bere:architects to achieve a higher level of quality and draught proofing than has previously been achieved by a traditional sash window. The window has been approved by Islington Planning Conservation officers and we believe that this forms a precedent and significant breakthrough for high performance windows in historic facades.

The penthouse apartment uses high quality Ambiwood Passive House windows from Ireland and is substantially insulated.

The building will be crowned by wild flower meadows on three levels designed by Dusty Gedge, and all the flats will have solar hot water heating.

Justin Bere

Comments 4

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i passed by the site this afternoon and it looked great. i was able to see timber frames and 'thick' insulations fitted. it's amazing to see everyday's progress how passivhaus being built. good luck and let me know if you ever plan a public site vist. i would love to join.
Nice idea, I'll ask the client if they would mind a tour. Sorry we didn't organise this during the construction period, but this has been an exceptionally busy period for us.
Beautfiul construction. Any idea who is managing the rentals or if the flats are being put up for sale? thanks
Hi many thanks for your kind comments. Clem Dobson is running the rentals and sales and I think that they are about to be marketted. Try contacting: jackieswift@clemdobson.co.uk. I think that the penthouse is due to be sold, and the one and two bed apartments are due to be rented. We designed the building several years ago and it is low energy rather than Passive House, but we have used all our Passive House experience to get the best results. The builder, Firmco, did an excellent job and the build quality is very good. You can see that from the marvelous brickwork, but the hidden parts of the building are also very good, from the internal insulation to the triple glazing (where permitted ie half the sash windows are double glazed for reasons only understood by the Islington conservation officer) to the mechanical and electrical services which are truly a work of art. You only need to look into an airing cupboard to recognise that the construction is high quality to the core. It's also been really good to hear the builder keep telling us how in winter the flats seemed to keep themselves warm! The penthouse has retractable external solar shading and tilt windows to give night time purge ventilation which should help keep it cool in summer.