ABG Roofdrain 40mm Drainage Geocomposite
Verified by manufacturer 5 months ago
A drainage board and water attenuation layer for growing media depths above 150 mm.
Application
Extensive green roof drainage layer.
Description
Roofdrain 40mm geocomposite drainage board and water attenuation layer comprising a perforated cuspated HDPE (High Density Polyethylene) core with selected geotextiles thermally bonded on each side.
It is primarily intended for use under thin soil layers where the plant roots can reach down to the water in the core reservoirs. The core is perforated to allow excess rainwater to flow into the underside and away to the rainwater outlets. The upper textile is optimised for drainage performance and the lower textile protects the waterproofing system.
Its major application is in extensive roof garden drainage, providing a lightweight drainage layer and water reservoir to sustain plant growth. Roofdrain makes extensive use of recycled polymers in its manufacture.
General information
Color | Black |
Finish | Smooth |
Material | High density polyethylene (HDPE) Polypropylene |
Shape | Rectangle |
Length | 20000 mm |
Width | 920 mm |
Height | 40 mm |
Uniclass | |
CAWS | Q37/355 Combined layers Q37/130 Extensive green roof |
Product range |
Specification data - Drainage layer corrugated boards
Material | Corrugated polyethylene board with polypropylene filtration and protection geotextiles. |
Depth | 40 mm. |
Recycled content | 95%. |
Thickness at 2kPa | To EN ISO 9863-1, 45 mm. |
Tensile strength MD/CD | To EN ISO 10319, MD: 45 kN/m; CMD: 40 kN/m (-10%). |
Elongation MD/CD | To EN ISO 10319, MD: 45%; CMD: 45%. |
Mass per unit area | To EN ISO 9864, Geocomposite: Dry: 2500 g/m²; Saturated: 16 500 g/m². |
Water flow (in plane) | 10%: 7.0 L/m·s. Manufacturer guidanceMD and CMD at 20 kPa confining pressure: |
Weathering resistance | To EN 12224, can be exposed for up to 12 months. Guidance for specification option: The geotextile has high UV stabilisation which may allow exposure up to 12 months depending on location. |
CBR puncture resistance | To EN ISO 12236, 3400 N (-20%). |
Roll size | 920 x 20 000 mm. Manufacturer guidanceThe tolerance on roll length is ±1.5% and on roll width is ±1.0%. |
Perforation | To EN ISO 13433, 17 mm (+20%). Manufacturer guidanceDynamic perforation cone drop. |
Filtration | To EN ISO 12956, 70 μm (±30%). Manufacturer guidancePore size 090 |
Protection layer | Upper: Non-woven needle-punched and heat-treated long staple fibre polypropylene. |
Sustainability data
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 1.8 kg CO₂ eq/kg Self declared |
Recyclability | 100 |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 95 % |
Case studies
Green Roof Extensive, Leeds Skelton Lake Services, UK
Green Roof, Extensive, Alder Hey Children's Hospital, Liverpool, UK
Green Roof, Intensive, Raithwaite Hall, Whitby, UK