Semi-intensive roofs have a great aesthetic appeal.
Wildflower or meadow type roofs can support a wider range of plants; grasses, wildflowers and herbs due to the greater depth of substrate.
The planting can be offered as turf, plug or seed. Semi-intensive roofs are not designed to be heavily trafficked and can be installed on flat to shallow pitched roofs.
Planting and Waterproofing
Typically, this will be a drainage layer and 100-170mm of semi-intensive substrate and the plant material that has been chosen i.e. turf, plug or seed. Weight Approx. 150- 220kg per sqm.
A wide range of grasses, herbs and wildflowers are typically included within the mix.
Installation and Maintenance
Blackdown Greenroofs' systems can be installed either by their installation teams or by Alumasc's nationwide network of Registered Contractors.
Semi-intensive green roofs are low maintenance. Once established they will continue to develop to create a self-sustaining plant community on the roof that will also provide habitat for invertebrates and bird species. Certain procedures are recommended to ensure the long-term success of the plants and it is important to ensure that the timing of these maintenance tasks is synchronised with the natural cycle of plant species on the roof.
Temporary irrigation is required for a period of 6-8 weeks until the plant material is established, once it has reached this point no additional irrigation should be required.