Drainage drainage board DRAINMAT P20-G

protectionwater storagegreen roof drainage

Product description
Urbanscape Drainmat P20-G is a drainage and reservoir membrane (20 mm height) made from high-density polyethylene (HDPE) designed specifically for green roofs. The membrane is dimpled and perforated on one side so the holes face upward to retain water while ensuring drainage. It is intended for flat green roof systems and is also usable on inverted roofs due to its permeability. The product includes an integrated geotextile allowing direct application of the plant substrate; remove the geotextile in walkable non-vegetated areas. The pressure resistance is approx. 150 kN/m² (approx. 15 tonnes per m² compressive strength), enabling use under base layers and bedding materials which can be applied directly onto the dimpled membrane.

Benefits

• Complete solution for drainage and retention
• Lightweight system for roof applications
• Efficient installation with integrated geotextile
• Durable material selection for long service life
• High water absorption for substrate irrigation
• Improved thermal performance for the roof build-up
• Enhanced acoustic insulation
• High fire resistance

Characteristics / technical specifications

• Product: Drainmat P20-G
• Height: 20 mm
• Material: High-density polyethylene (HDPE)
• Design: Dimpled drainage and reservoir membrane
• Perforation: Perforated on one side (holes intended on upper side for water retention)
• Application: Designed for flat green roof systems; permeable and suitable for inverted roofs
• Integrated geotextile: Yes — allows direct application of plant substrate; remove geotextile from walkable non-vegetated areas
• Pressure resistance: Approx. 150 kN/m² (approx. 15 tonnes per m² compressive strength)
• Installation: Base layer and bedding material can be applied directly on the dimpled membrane