Green Roof Soil Depth

It is also important to factor in the type and lifetime of the roof membranethat will be used.

Green roof soil depth.

Careful species selection is needed to ensure outcomes can be met. These require irrigation and a substrate depth of at least 200 mm. Plants for green roofs with a soil depth of 100mm plants for green roofs with a soil depth of 150mm so seize the opportunity to elevate your planting to a whole new level with our pick of plants for a soil depth of 50mm. Some green roofs are constructed specifically to support sports turf.

The lite system is typically used on retrofit projects when the roof is engineered with only 15 to 17 pounds per sf for the green roof component. The structural engineer must factor in the weight of completely saturated soil since the plantings and the soil will hold a significant amount of water. Liveroof engineered green roof soil weighs approximately 27 to 29 lbs sq. The surface and play requirements are much more demanding than for amenity turf.

There are two types of green roof. Its soil depth is a full 2 inches enough to support many low growing succulents and a limited number of accent plants. Liveroof soil specifications will vary somewhat depending on region and available components. Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof.

Consult your local grower for specifics. It is generally not recommended for hot climates. This is especially true of intensive green roofs which can have soil that is two feet deep or more. Fully saturated at 4 depth when fully vegetated with liveroof plants.