Green Roof Minimum Depth

They can support many different kinds of plants but they are heavier and require more maintenance.

Green roof minimum depth.

Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used. There are two types of green roof. These require irrigation and a substrate depth of at least 200 mm. They may include a granular drainage medium multi course or a synthetic drainage layer multi layer.

How to make a green roof for your bird table. The most popular type of green roof sedum roofs are extensive green roofs that have a total depth of 3 to 8 inches. Therefor a significant amount of attention must be paid to the various. The minimum project amount must be 50 000.

So seize the opportunity to elevate your planting to a whole new level with our pick of plants for a soil depth of 50mm. Tray systems are not a viable option for intensive roofs due to the weight. Thicker with a minimum depth of 12 8 cm 5 0 in. Green roof projects will undergo an advanced schematic 75 and 100 design review process with a two week review time for each phase.

The initial expense of green rooftops often turns away prospective clients. Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof. The schedule below outlines the maximum reimbursement rate for green roof projects. Types of green roofs.

Shallow ranging in depth from 2 cm 0 79 in to 12 7 cm 5 0 in. Plants for green roofs with a soil depth of 100mm. These generally require a 5 15cm 2 6in depth of growing medium that can consist mainly of lightweight inorganic materials such as perlite leca sand rockwool and crushed tiles or concrete. Vegetables are the other main group of annual plants used on green roofs.

They are lighter than intensive green roofs and they don t. Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs. Funding for green roofs is determined by green roof area gra and soil depth. Because green roofs require professional design careful structural analysis and multiple layers and systems even extensive green roofs usually start at 8 per square foot significantly more expensive than the 1 25 per square foot for built up roofs burs source.

Plants for green roofs with a soil depth of 150mm.