Sponsored by Soprema, this CPD module delves into the rise of flat roofs, their evolving nature, and the crucial fire testing standards that must be met in order to achieve compliance with current ...
These need 10-20cm (4-8in) depth of growing medium, enough to support perennials but not shrubs and trees. They can be created, for example, on a gently sloping shed roof by building a grid of wooden ...