Although homeowners may think of living roofs as being new as a result of the green movement, they have an ancient history. The Vikings, for instance, had sod roofs. Today, a living, or green, roof is simply a roof with vegetation growing it, and the plants may cover all or part of the roof. Plants growing in containers sitting on the roof have some advantages but are not regarded as a living roof.
When a homeowner has decided to invest in a living roof, it’s necessary to have a waterproof membrane installed between the soil and the roofing material. The roof must also be strong enough to support the weight of the soil, water, and vegetation. The experts at Charleston Roofing can evaluate roofs for strength and install any necessary waterproofing.
A basic rooftop garden can be a waterproof membrane covered with a growing medium and planted with various plants that the homeowner waters by hand. Owners may choose to include a root barrier to further protect the roofing material, and an irrigation system may be added to make watering easier. Depending on the roof, a drainage system might be necessary. The plants can be any grasses, flowers, or vegetables that will grow in the local climate.
There are three primary kinds of living roofs.