Green Roof Systems
( Vegetative Roof Systems )
Also known as Green Roofs, vegetative roof systems are gaining popularity especially in larger urban areas where there is growing concern to combat the heat island effect generated by high concentrations of concrete sidewalks, streets and tall, reflective buildings clustered tightly together. An additional benefit is the ability to help control ground water run-off by retaining rain water for plant use. These systems rely on a premium waterproofing system and associated components such as a protection course, a root barrier, a drainage layer, thermal insulation and an aeration layer, and an overburden of growth medium and plantings. Extensive systems refer to growth medium (engineered soil) depths up to 6” while intensive systems have growth medium depths greater than 6”. Owners can also choose extensive systems that utilize pre-planted trays installed in a modular application.