Green Roof Drainage Plates

Ct drainage plate systems are green roof systems underdrained with waffled sem rigid plastic sheets called drainage plates.

Green roof drainage plates. Since drainage plates are lightweight and easy to install they have become the most popular drainage system for green roofs. Grs extenduct 2 includes an additional geocomposite fabric bonded to. Drainage plates are recommended for roofs with slopes less than 1 12. A separation fabric over the top of the plates retains.

Three thicknesses of drainage plates are available to meet the drainage and water storage requirements of almost any green roof. The design creates an open and continuous flow path even under high loads. 25mm 1 thickness is standard for thin extensive roofs 40mm 1 5 is recommended for enhanced water storage and drainage on thicker extensive roofs and semi intensive roofs and 60mm 2 5 is available for. This kind of board integrates the functions of storage and drainage of water drainage board drainage cells drainage plates for rooftop garden greening roofs.

Green roof systems of this type are drained by a multi layer fabric mat called a drainage mat that combines soil separation drainage and protection functions. The filter fabric top layer prevents clogging from the growing media and the waffle entanglements sit directly on the root barrier. Grs extenduct is a 40 recycled drainage core in a waffle pattern with a geocomposite fabric bonded to the top side. Water is retained within pockets on the upper sides of the plates while excess water flows through small holes and spills over the edges to be carried off the roof.

Compared with green roofs systems using drainage plates or granular drainage this system is the fastest to install and creates the thinnest and lightest green roof assembly.