Roofscape® Granular Drain Drainage Medium

Roofscape® Granular Drain is a granular drainage medium for extensive, semi-intensive and intensive Greenroof-Roofscapes® assemblies, as well as for planters and containers, designed to retain stormwater and to provide horizontal drainage, and which meets the requirements described in ASTM E2777-14 Standard Guide for Vegetative (Green) Roof Systems and detailed below. 

Roofscape® Granular Drain is a precisely balanced blend that consists of all lightweight mineral aggregate.