Roof Drainage Layer Buy | Green

: A more cost-effective and lighter alternative to the standard GRS, designed for projects with lower water retention requirements (~0.042 gal/sq. ft.). : ~$380 at BlueStone Supply . Types of Drainage Layers

: Includes two filter layers (root-resistant and membrane-protective) and is made from 100% recycled filter fabric. Enkadrain 3811R Green Roof Drainage Layer green roof drainage layer buy

: Applications requiring continuous discharge under heavy compressive loads, such as rooftop gardens or permeable paver bases. J-Drain GRS50 : A more cost-effective and lighter alternative to

: A high-retention system specifically designed for green roofs. It features an inverted dimpled core that retains approximately 1.1 gallons of water per 10 square feet. green roof drainage layer buy