Verified by manufacturer 4 months ago
BBA Agrément Certificate
Certificate type
Statement of compliance
Certificate type
An extensive substrate providing a suitable growing medium for a self-sustaining plant community consisting of pre-grown sedum plug plants or pre-grown sedum blankets.
Sedum based green roofs using pre-grown sedum plugs or pre-grown sedum blanket. Install GM20 Extensive Substrate on either Radmat D25 or D40 drainage/reservoir board covered with G11 filter fleece in accordance with the Radmat specification.
For compliance with Fire Regulations, Green Roof substrates must contain < 50% Organic Matter by volume. Please see STRI Certification for Radmat MedO Products.
Radmat GM20 Extensive Substrate provides a suitable growing medium for a self-sustaining plant community consisting of pre-grown sedum plug plants or pre-grown sedum blankets. Consisting of a blend of water retaining aggregates, crushed brick and organic material, all composted material is from sustainable sources and the crushed brick element is a by-product or a second from the brick manufacturing industry and contains no demolition waste. Compliant with GRO substrate guidelines.
Color | Brown |
Finish | Natural |
Material | Mineral |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 25 year |
Uniclass | |
CAWS | Q37/400 Vegetation blanket Q28/125 Green roof growing media system Q37/130 Extensive green roof |
General requirements | Topsoil, growing medium, subsoil and preparation materials generally |
pH (range) | 7.8. |
Organic matter content | 38 g/ l. |
Percentage of material smaller than 0.063 mm in size (by mass) | 2.1%. |
Percentage of material greater than 4.0 mm in size (by mass) | 92.8%. |
Air content at maximum water holding capacity | 37.5%. |
Product Reference | MedO GM20 Extensive Substrate |
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Mineral |
Recyclability | 100 |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 100 % |