Design Buy Build Issue 15 2015 | Page 54

First Floor Plan A feature American Black Walnut staircase wraps itself up through the building, connecting the habitable spaces through its tree like presence. Half landings, internal openings and unusual apertures encourage the notion of creating internal courtyards of living spaces that are all strongly connected to one another. At the top of the house sits a roof top study for the client, over-looking the four storey central staircase. At the bottom of the staircase the tree like form wraps itself onto the ceiling of the basement rooms as the roots of the staircase in plywood ribbons, thus connecting this vertical building thematically as well as spatially. The planning process was complex for this building due to the sensitive nature of the site (building of townscape merit), leading to months of negotiations with the local planning department eventually agreeing with a limit in place to the height of the extension. The brick cladding pays respect to the existing building, whilst be separated away from the historic fabric of the building by a glass slice. Section The robust sustainability strategy for the building integrates an MVHR system, internal thermal insulation lining, replacement double glazed fenestration, air tight application and increased glazing to beneļ¬t from passive solar gain. As such the existing