gRoof 500 is a heavy-duty protection and separation fleece for the Groof green roof systems. With a 500 g/m² grammage and 3.5 L/m² water reservoir capacity, it provides enhanced mechanical protection and moisture retention.

gRoof 500 Protection Fleece is a mechanically reinforced protection and storage layer designed for installation above waterproofing membranes within green roof systems. It offers greater durability than lighter fleeces, making it suitable for applications that require enhanced mechanical protection and greater water retention.
Installed directly above the waterproofing membrane, gRoof 500 helps prevent abrasion and installation damage while functioning as an effective separation layer between incompatible materials such as PVC and bitumen.
With a water storage capacity of approximately 3.5 litres per square metre, it helps retain moisture in extensive, semi-intensive, and intensive green roof assemblies. The fleece meets the requirements of recognised roof greening standards and is part of tested green roof system configurations.
Specified across sectors where this material fits the application.
| Property | Value | Unit | Test method |
|---|---|---|---|
| Thickness | 4 | mm | |
| Areal weight | 500 | g/m2 | |
| Other | |||
| Water reservoir | 3.5 | l/m² | approx. |
| Delivery weight per roll | 50.0 | kg | approx. |
| Delivery weight per pallet | 275.0 | kg | approx. |
| Pack diameter | 0.50 | m | approx. |
| Pack height | 2.0 | m | approx. |
| Quantity per roll | 100 | m² | |
| Quantity per pallet | 500 | m² | |
An indicative cradle-to-gate carbon estimate for this material, supplier-agnostic and shown as a range. A guide for specification and comparison, not a verified declaration.
Cradle to gate covers raw material, manufacturing and inbound transport to Allbase; customer delivery is excluded. All figures are estimates, shown as a range.
Published industry category data and UK Government greenhouse gas conversion factors.
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