Product Information

Detailed Description
 Designed for extensive/biodiverse green roof system with a build-up of 70-150mm
 The substrate is mixed and bagged off site
 Suitable for large scale areas, uneven or more complicated decks as it is flexible and ‘built into’ the existing structure
Product Guidance
Drainage Layer:
 GuaraDRAIN retention layer
 Thickness = 15/20mm
 Can be cut and shaped around particular details
Geotextile Filter Fleece:
 GuaraFLEECE Recycled multi-coloured polyester
 Weight = 300 g/m2
 Laid above and below drainage layer
Growing Medium:
 12-75mm crushed brick/rubble (60-80%)
 Locally sourced marine aggregate & grit (5-10%)
 Growing medium (10-20%)
 Wood mulch (10-20%)
 Sedum/wildflower seeds are planted with native/local plants
 A natural sustainable habitat can be created using laps
 Very low maintenance and no irrigation required
 Opportunities to recycle site waste in substrate (this must be tested prior to being used within the GuaraGREEN Roofing System)
Maximum Roof Slope:
 15o
Product Specification
– Name: Guaranteed Asphalt Ltd
– Email:
– Product Reference: Component GuaraGREEN Extensive/Biodiverse Green Roof System
– Drainage Layer: GuaraDRAIN (15/20mm)
– Growing Medium: Low Nutrient
– Fertiliser: Not Required
– Vegetation: Sedum/wildflower mix
– Vegetation Barrier 20-40mm washed pebbles
GuaraMET edge retainer
– Outlet Inspection Chamber GuaraSPECT inspection chamber (500 x 500 x 100mm)

See also
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