Green Roof Drainage Layer Buy May 2026

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

: 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

When selecting a layer, consider which technology best fits your project’s hydrological needs: Overview for green roofs - Minnesota Stormwater Manual When selecting a layer, consider which technology best

: A 3D mesh mat designed to enable quick drainage and breathability. The "3811R" model features geotextile fabric on both sides for maximum filtration. : ~$1,026 for a 39" x 100' roll at Eastgate Supply . Best For Best For : Applications requiring continuous discharge under

: 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 the standard GRS, designed for projects with lower water retention requirements (~0.042 gal/sq. ft.). : ~$380 at BlueStone Supply . Types of Drainage Layers

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