Gianni Botsford designed house with copper roof

Gianni Botsford Architects designs a home with a funnel-shaped copper roof

Dec 4, 2018
  • Article by Natalie Mortimer

London-based Gianni Botsford Architects has designed an unusual dwelling featuring a copper-roofed pavilion and subterranean swimming pool.

Accessed through a narrow passage alongside an 1840s townhouse, the project involved the demolition of a 1960s bungalow and its replacement with a largely subterranean house, including a swimming pool.

The copper roof of the house

Externally, the most visible component of the house is its pavilion-like copper-clad roof. Inside, the roof is made from a complex glulam timber structure made from spruce, its double curvature concluding in a glazed oculus. The roof has a floating quality set above a glass-walled living room that connects the interior of the house to the surrounding landscaped garden.

Copper details in the house

Each individual piece of the timber roof structure was pre-fabricated in the Dolomites from three-dimensional models Gianni Botsford Architects provided. The pieces were then brought to the site and craned into position in eight sections.

Backyard view of the copper roof

Botsford summarises the concept for the roof, “Designed, modeled and fabricated using both digital and manual processes each feeding the other, the intensity of the complex timber roof structure belies its warm domestic scale and character.”

Staircase in the house

Copper recurs throughout the house, in surfaces of the ground floor kitchen and in detailing of rooms below. The contrast between the cool and warm tones of Douglas Fir and carved Carrara marble adds to the “sensual quality” of the underground spaces.

tHE swiming pool

There are two levels below the ground floor; bedrooms are immediately below ground, while there is a generous living area with a 10-metre long swimming pool on a level further below. Lightwells and skylights are designed to optimise daylight casting toplight onto the walls of lower ground floors.

The swimming pool

“To build with light and darkness is to work with what a context gives you – a unique set of constraints and opportunities,” says Botsford. “Shaped and informed by the light and shadow that surround it, the roof’s tent-like form creates a new place for life to occur in the house – one that turns its back on the large volumes surrounding it and embraces the site.”

Photography by Edmund Sumner

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