Kerabit QDrain 3D-GEOTEX drainage layer is a geocomposite consisting of a 3D monofilament core sandwiched between two filter fabrics.
QDrain drainage layer provides excellent water-carrying capacity also under load. The product's load capacity is 200 kPa with 20% deformation, so its water conductivity remained very good.
QDrain is particularly suitable for exterior deck structures installed between the waterproofing and thermal insulation.
QDrain can also be used as a drainage layer in green roofs as well as light-weight and inverted green roof constructions. In green roof constructions, QDrain is always installed on top of the root prevention membrane and other waterproofing membrane layers. In inverted constructions, QDrain is installed on top of the membranes before the thermal insulation.