Green Roof Drainage Layer Buy -

: 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

: 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

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. : A more cost-effective and lighter alternative to

Several high-performance geocomposite drainage systems are available for purchase from specialized suppliers. J-Drain GRS (Green Roof Drainage System) - GRS Go to product viewer dialog for this item. Types of Drainage Layers : A high-retention system

: Applications requiring continuous discharge under heavy compressive loads, such as rooftop gardens or permeable paver bases. J-Drain GRS50

: 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