William Gunn House is a new build residential block in the heart of Hampstead, London.

The project for United House was designed by Calford Seaden Architects who specified the Langley Extensive Green Roof system over the 910m² roof area, on three different roof levels.

Langley also helped with the design and supplied the roof system on the sister project Stonegrove Estate, also featured as a case study.

Approved contractor J Ring Roofing did an excellent job of installing the flat roof system as seen in the highlighted photographs.

Main System Products: Graviflex, Adepar JS, Tapered Parafoam Ultra Insulation, Parevapo SBS, Fabric Filter Sheet, Nutrifoam Vegetation Mat, Pre-Cultivated Sedum Mats