Commonwealth House, London

A neat and satisfying installation of a roof terrace has recently been completed at Commonwealth House, No 1 New Oxford Street London. The refurbishment and extension of 1930s art deco office block Commonwealth House in London, designed by architect and planner Henry Philip Cart De Lafontaine, features a curved corner sandwiched between High Holborn and New Oxford Street.

The refurbishment included a single story 9th floor rooftop extension which is set back from the street between the two brick cores. The roof terrace design by landscape architect Robert Myers required us to design, fabricate and install pre-fabricated modular planters; one being a sculptural design with Iroko wood seating and incorporating storage, circular seating and boundary bar, soiling and planting, plus the installation of LED strip lighting and festoon lighting for the trees.

The sculptural and circular planters’ fabrication was given to RH Philips who has built many of our bespoke planters on other projects. On installation the planters were given a gravel drainage layer,  an additional drainage layer floradrain then  filled with a lightweight loam intensive greenroof substrate, a Mona ' water tank reservoir’ following which, planting for the sculptural planter included Lavandula angustifolia, 'Munstead', Libertia grandiflora , and Pennisetum alopecuroides. The long planter was planted with Fargesia murielae 'Bimbo' and the circular planters with Amelanchier lamarckii , Convolvulus cneorum, Libertia grandiflora, and sisyrinchium striatum. The Bronzino Pots were also planted with Liriope muscari, and Polystichum munitum.

This installation took just three weeks and materials were transported to the roof by NMT Mobile Tower crane.