Pitched Green Roofs

project profile data
Area: ca. 550 m²
Construction year: 2005
Architect/Design: DKV architects, Rotterdam
Contractor: Roosendaal landscaping
System build-up: Pitched Green Roof with Georaster®
project profile data
Area: ca. 1,800 m²
Completion: August 2011
Architect/Design: Perkins + Will, Vancouver
Landscape architects: Cornelia Hahn Oberlander, Vancouver
System build-ups: Floradrain® FD 40-E, Floraset® FS 75 and Georaster® , with 150–200 mm System Substrate

Steep Pitched Green Roofs up to 35°

Our highly sophisticated green roofing system with Georaster® elements even enables the installation of steep pitched roofs up to 35°. Stable Georaster® grid elements are connected to each other to create a stable unit and filled with substrate are used to secure the green roof. Additional shear barriers will absorb any shear forces occurring.
Technical Data
Build-up height ca. 120 mm
Weight, saturated ca. 155 kg/m²
Water retention capacity ca. 64 l/m²

Pitched Green Roofs up to 25°

The core element of the system build-up for roofs with a pitch of up to 25° is the Floraset® FS 75 drainage element. Due to its profiled design and studs facing upwards the elements interlock well with the substrate layer preventing the substrate from sliding and at the same time distributing the shear forces safely in to the eaves upstands or into additional shear barriers.
Technical Data
Build-up height ca. 130–150 mm
Weight, saturated ca. 115–145 kg/m²
Water retention capacity ca. 38–44 l/m²