Büsscher DRAIN 20 PLUS

Art.No. 94026

Perforated HDPE-dimpled membrane with fleece laminating and water storage capacity

Intended use

  • Drainage and water storage mat for green roofs

    The drainage mat is breathable due to perforated areas and can be used in inverted roofing systems.


5 rolls of 10 m x 2m = 100 m² per pallet

Characteristics Unit Result
Length m 10
Width m 2
+ ca. 10 cm Vlies-
Dimple height mm 20
Mass per unit area g/m² ca. 800
Compressive strength kN/m² ca. 150
Water flow capacity in their plane i=1 at 20 kPa l(s x m) ca. 9
Water storagecapability l/m² ca. 6
Air volumebetween dimples l/m² ca. 14
Thermal resistance °C -30 bis +80
Chemical properties - resistant to chemicals
water permeability normal to the plane m/s ca. 100*10-3
Characteristic opening size µm ca. 170
Reaction to fire test Class E