Poulsom Middlehurst Adds Copper-clad Extension To East London Attic Flat

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This rust-coloured copper home extension by British studio Poulsom Middlehurst sits above the red-brick walls and clay-tiled roof of a Victorian terrace in east London.

Roof extension to east london flat by Poulsom Middlehurst

Poulsom Middlehurst extended and refurbished the top floor flat inside a Victorian property in Clapton, east London. The one particular-bedroom flat had previously been spread over two floors, with an uninhabitable attic space usable only for storage.

Roof extension to east london flat by Poulsom Middlehurst

The extension takes the type of a massive dormer – a structure that projects horizontally out from a roof. It creates an extra bedroom and bathroom on the upper level, even though a new staircase offers far better access to an existing roof terrace.


Related story: Lipton Plant Architects adds pale-brick extension to north London house


The russet copper cladding of the loft extension pairs with the red brickwork of the period property, but will eventually oxidise to harmonise with the green foliage of neighbouring tree branches.

Roof extension to east london flat by Poulsom Middlehurst

“The exterior copper cladding will alter colour as it is weathered over time,” mentioned the architects. “The colour has already changed to deep orange and will eventually grow to be green to match the surrounding trees.”

Roof extension to east london flat by Poulsom Middlehurst

Inside, the south-east London architects removed a cumbersome chimney breast to maximise the restricted floor plan, and added huge windows and skylights to bring more light into the a variety of rooms.

Roof extension to east london flat by Poulsom Middlehurst

“Large windows, glass balustrades and roof lights give the space an airy and lofty feel, providing numerous new vistas and views to the surrounding trees and sky,” said the architects.

Roof extension to east london flat by Poulsom Middlehurst

Earthy accents of colour come in the type of engineered timber floorboards, grey slate paving across the roof terrace, and dark grey and brown hexagonal tiles in the bathrooms.

Roof extension to east london flat by Poulsom Middlehurst

The new staircase features L-shaped wooden treads. “A new stair acts as a spine, which knits collectively the new and old elements of the house to produce a single, coherent set of spaces,” added the architects.

Roof extension to east london flat by Poulsom Middlehurst

A wide glass door leads off a midpoint landing to the roof terrace, where a huge skylight for the kitchen is set into grey slate paving.

Roof extension to east london flat by Poulsom Middlehurst

From here, the staircase continues up to the master bedroom and bathroom. It is lit by tall windows, skylights and a series of tiny rectilinear light fittings that project light upwards and downwards.

Roof extension to east london flat by Poulsom Middlehurst

Big expanses of mirror in the reduce and upper floor bathrooms reflect the light from clerestory windows and skylights.

Roof extension to east london flat by Poulsom Middlehurst

“An enlarged fixed window opens up impressive views from the bathroom and landing to the trees at the rear of the home,” mentioned the group.

Roof extension to east london flat by Poulsom Middlehurst

The floors are covered in small hexagonal tiles with white grouting, although walls have white rectangular tiles with dark grouting.

Roof extension to east london flat by Poulsom MiddlehurstLower floor strategy – Roof extension to east london flat by Poulsom MiddlehurstUpper floor program – Roof extension to east london flat by Poulsom MiddlehurstRoof strategy – Roof extension to east london flat by Poulsom MiddlehurstElevation
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