Green Roof Drainage Layer Buy Apr 2026

: ~$489 at BlueStone Supply or ~$422 at Best Materials .

: 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

The drainage layer is a critical component of a green roof system, responsible for facilitating water runoff, providing aeration to plant roots, and protecting the waterproofing membrane. A high-quality drainage layer prevents soil oversaturation, which can otherwise increase the structural load on the roof and compromise its integrity. : ~$489 at BlueStone Supply or ~$422 at Best Materials

: 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. responsible for facilitating water runoff