Green Roof Substrates are specifically engineered for different types of roof greening, both for domestic and commercial projects.
Extensive Green Roof Substrates are for use on shallow green roof systems (<200mm depth) and are often associated with Sedum mat, Sedum plug plant or wildflower planting. These growing media must be low in nutrient content so the roof is low maintenance and to ensure it does not get out-competed by undesirable vegetation. They must also have good water holding capacity due to the reduced “soil” depth whilst remaining free draining, so the substrates do not become completely saturated with water, which could cause root-rot.
Our exciting new range of extensive substrates includes:
We are also specialists in Intensive Green Roof Substrates, suitable for “roof gardens” and engineered for larger vegetation, such as shrubs and trees.
Our green roof substrate blends are modified for all these different planting schemes so please get in touch with us for the best type for your product. We also recommend certain depths of growing media for particular planting, so if you are unsure of what you require please get in contact.
All our substrates are based on the German FLL green roof guidelines to ensure that all essential properties have been considered and tested. Boughton Loam has supplied substrate for many successful green roof projects all over the country – see our case studies section for more information.