Extensive green roof drainage membrane.
As a water holding and drainage layer above a deck, flat roof or pitched roof where shallow planting is used to create an extensive green roof.
Newton 420 Reservoir is a unique drainage and water-retention membrane for use where a water reservoir is required for extensive green roofs of sedum, herbaceous plants, mosses or grass above decks and roofs.
Unlike other products of this type, Newton 420 Reservoir has a bonded geotextile that prevents intrusion of the soil into the water holding cups during back-fill and compression. This results in a permanently larger volume reservoir than any other 20 mm deep green roof membrane.
When the water holding cups are full, the large drainage holes within the high-density polyethylene (HDPE) core allow water to easily pass through to the drainage layer below to prevent saturation and water logging of the green roof above.
Newton 420 Reservoir should continue over construction and movement joints and acts as a decoupling membrane preventing movement from the substrate transferring through to the surface finish.
Consult manufacturer's literature for relevant surface preparation.
Features and benefits:
Application:
As a water holding and drainage layer above a deck, flat roof or pitched roof where shallow planting is used to create an extensive green roof.
Color | Studded core: Black, Geotextile: White |
Size | 21 x 920 x 50000 mm |
Uniclass 2015 | |
CAWS | J40/295 Geocomposite studded cavity drainage/ venting membrane Q37/130 Extensive green roof Q37/350 Drainage layer |
Product Reference | Newton 420 Reservoir (M31) |
Standard | To EN ISO 12958, BS EN 1931, EN ISO 12236, EN ISO 10319 and to EN14030/ EN ISO 13438 |
Material | - |
Studded layer | High density polyethylene (HDPE) |
Filter layer | Polypropylene |
Stud depth | 19 mm |
Membrane height | 20 mm |
Sheet thickness | 1.2 mm |
Weight (minimum) | 70.00 kg |
Colour | Studded core: Black, Geotextile: White |
Performance | - |
Flow rate | 0.07 L/m/s (at 20 kPa), 0.04 L/m/s (at 100 kPa), 0.02 L/m/s (at 200 kPa) |
Water-flow at 20 kPa – 1:80 slope – Upper layer | 0.07 l/m/s |
Water-flow at 100 kPa – 1:80 slope – Upper layer | 0.04 l/m/s |
Water-flow at 200 kPa – 1:80 slope – Upper layer | 0.02 l/m/s |
Compressive strength – Temporary loading | >240 kPa |
Compressive strength – Permanent loading | >120 kPa |
Water vapour diffusion resistance – Sd value | >604 m |
Water vapour diffusion resistance – µ value | >1208000 µ |
Water vapour diffusion resistance | >3020 MNs/g |
CBR puncture resistance | 2800.00 N |
Tensile strength (Machine direction) | 19 kN/m² |
Tensile strength (Cross direction) | 10 kN/m² |
Chemical resistance | Excellent |
Oxidation resistance | Excellent |
Standard product features | Colour: Studded core: Black, Geotextile: White. Features: Unique bonded geotextile, large drainage holes allow a much higher drainage flow, quick and easy to install, tough and durable, quick and easy to install. Material: Studded core: High density polyethylene (HDPE), Geotextile: Polypropylene. Shape: Wrapped label rolls which weigh 70 kg. Size: 21.2 x 920 x 50000 mm. |
Platform | Compatible | Version | Certified to |
---|---|---|---|
![]() | IFC2X3 | 4 | 1.3 |
![]() | Revit 2016 | 5 | 2.0 |
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