lightweight roofing materials cavity garden dimple strip root barrier drainage cell sheet board

The HW-PES18 drain sheet is made by the high-density polyethylene (HDPE). There is grotextile membrane on the surface, forming drain sheet. HW-PES18 has two-sided concave-convex. It has the two-sided draining water function, has the water storage function, under the moist environment it can bi-directional adjustment.
The HW-PES18 drain sheet  is widely applied in the roof garden and outdoor garage roof afforestation project.
Job practice detail (chart of roofing planter structure, garage roof structure)

Product: HW- PES18

Color : Black

Material quality: high-density polyethylene

Quality(g/m²): 1300

Thickness (mm): 18

Compressive strength (kpa): 200

Specification of drain sheet mm: 1110×18100

Flow rate (Loss 5cm) (L/S) : 2.4

Flow rate (Loss 10cm) (L/S) : 3.2

Product Testing:

Packing Pictures: