Intensive Green Roofs

Intensive green roofs are generally designed to accept recreational activity and to include the widest range of vegetation from grass to shrubs and semi-mature trees. Depths of soil are typically between 200 and 300 mm, which together with the necessary minimum 50 mm of water reservoir and drainage systems generate an additional imposed load of typically 400 kg/m2 on the existing or proposed structural system. Intensive green roofs may incorporate both soft and hard landscaping and slopes up to 20° are practicable. To conform to Health and Safety requirements edge protection (e.g. hand ail) or a fall arrest system (e.g. harness attachment points) must be incorporated into the design.

A typical intensive green roof system requires the following construction:

• soil, compost and planting - hard and soft landscaped areas;

• filter fleece to prevent soil blocking the drainage system;

• moisture retention material and drainage system;

• protection mat (to prevent damage to root barrier and waterproofing layers);

• polyethylene foil (isolating layer);

• waterproof layer;

Where trees are required, soil depths may need to be increased to typically 750 mm, with the associated increase in overall weight. Care must be taken to ensure that the roof membrane is not damaged by gardening implements.

Homeowners Guide To Landscaping

Homeowners Guide To Landscaping

How would you like to save a ton of money and increase the value of your home by as much as thirty percent! If your homes landscape is designed properly it will be a source of enjoyment for your entire family, it will enhance your community and add to the resale value of your property. Landscape design involves much more than placing trees, shrubs and other plants on the property. It is an art which deals with conscious arrangement or organization of outdoor space for human satisfaction and enjoyment.

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