Landscape & Urban Design Issue 38 2019 | Page 63

Installing a roof garden, green roof or roof garden terrace is not without its challenges. During the planning and design stage considerations need to be given to site access, health and safety features, over-looking neighbouring properties, accessibility for citizens, load-bearing capacity, drainage and ongoing maintenance and management. There are many specialist organisations to guide you through the process and well-respected suppliers, like Green-tech who can supply many of the key elements for a successful green roof space. This will include insulation, waterproofing materials, weed control membranes, roof drainage systems, filter membranes, green roof vegetation and roof garden substrates for podium roofs and intensive and extensive roof garden constructions. Each component contributes to a successful green roof project but for healthy plants, shrubs and trees to thrive your choice of soil is essential. It is critical that a specialist roof garden substrate is selected as you will need it to be light weight and have good architects and designers to produce nutrient content and water holding environmentally sustainable properties – all key ingredients for a substrates that thrive in harsh rooftop successful recipe. environments. Green-tree have a The Green-tree brand of soils and substrates has been successfully installed in many green roof projects choice of substrates with different soil profiles to suit all green roof and podium roof installations. throughout the country. With 25 production sites across the UK, the range of Green-tree roof substrates was developed in partnership with landscape and roofing contractors, www.green-tech.co.uk www.green-tree.co.uk