ISO-DRAIN nature 15 G

ISO-DRAIN nature 15 G is a capillary-break drainage sheet made from resilient HDPE with a recycled content of at least 89%, laminated with a robust separation and filter geotextile. It is suitable for two applications: beneath walk-on surfaces, such as roof terraces and balconies, and beneath drive-on surfaces, such as fire service access routes over underground car parks and on parking decks. It is intended for both private and public construction projects.

ISO-DRAIN nature 15 G drains excess rainwater and meltwater quickly and reliably. The drainage layer therefore helps prevent efflorescence in paving, frost damage and waterlogging on green roofs.

It also meets the new guidelines for outdoor floor coverings. In Germany, these are BTI 1.4 for floor coverings and the flat roof guidelines of the German roofing trade. These specify 15 mm high drainage sheets at barrier-free transitions, such as terrace doors and doors providing access to roofs. The sheet also complies with Swiss standard SIA 271. Both sets of guidelines require the surfaces adjoining doors to be drained to prevent water entering the interior during heavy rainfall.