T: 01858 410 372
E: techenquiries@radmat.com


MedO Green Roof Systems

MedO GM30 Extensive Growing Medium

Radmat GM30 Extensive Growing Medium provides a suitable base for a self-sustaining plant community consisting of pre-grown wildflower plug plants, wildflower blankets and the majority of species used in biodiverse green roofing applications including ‘brown’ roofs. Consisting of a blend of 2/5mm, 5/10mm and 5/15mm grades of crushed brick mixed with 10mm PAS100 green compost. Compliant with GRO substrate guidelines.

Green roofs consisting of wildflower seed mix, mixed pre-grown wildflower and sedum plugs, pre-grown wildflower and sedum blanket, and Biodiverse green roofs and ‘Brown’ roofs. Install GM30 Extensive Growing Medium on either Radmat D25 or D40 drainage/reservoir board covered with G11 filter fleece in accordance with the Radmat specification.


Apply to a depth as specified according to plant type allowing 10% post installation settlement. Indicative substrate depths are given in the table below, however the specified depth will vary based on a variety of factors including design load, building location, building height, plant species etc. It is therefore important to consult the project specification.

Description Value
Composition Crushed bricks/compost
Drainage Board Radmat D25/D40
Filter Fleece Radmat G11
Delivery Form 1.2m³ Bulk Bags/25 litre Sacks/Pallet

Click on the items above to view or download information. To download multiple items as a zip file click + to add to a collection.

Please Login before adding files to a collection.