How thick is an extensive green roof?

How thick is an extensive green roof?

G-1 Extensive green roofs have a much shallower growing media layer that typically ranges from 3 to 6 inches thick.

How thick is a sedum roof?

between 4 and 15 cm
What is a Sedum roof with Sedum mats? An extensive green roof or Sedum roof is a roof with vegetation that is more or less self-perpetuating and that can further develop and maintain itself. Roughly speaking, extensive green roofs have a substrate thickness of between 4 and 15 cm and a weight of 30 to 220 kilo per m2.

What are the layers of a green roof?

The basic anatomy of a green roof consists of vegetation, growing medium, filter membrane, drainage layer, waterproof/root repellant layer, roofing membrane support for plantings above, thermal insulation, vapor control layer, and structural roof support.

How is a green roof constructed?

The basic build up of a green roof is three layered: drainage, filter and vegetation layer. Each layer needs to fulfil several functions to decrease the height and the weight of the overall build-up.

What are the components of a green roof?

In order for a green roof to grow and thrive you need to install a green roof system. There are several components that make up a green roof system – the layers are as follows: Waterproofing of the roof deck. Root barrier. Drainage Membrane. Filter layer / geotextile filter. Substrate / growing medium. Vegetation.

How big does a intensive green roof need to be?

Intensive green roofs are the big-brother of extensive green roofs. They have a larger profile of up to 1m deep, allowing them to support larger plants and have a greater water-holding capacity. They can weigh between 180-500kg/sqm or more and require a stronger physical roof structure.

How does a green roof affect the value of a building?

This may depend on the type of climate your building is located in. Increased Market Value: Installation of a green roof has been shown to increase the marketability of a building and add a value of 6%-15%. Significant aesthetic effects accrue to the owner, occupants and the surrounding community.

Which is lighter green roof or regular roof?

On average Urbanscape ® Green Roll is 8-10 times lighter than other regular green roof substrates, so Urbanscape ® Green Roof system can be installed also on lightweight constructions where traditional systems are not possible.

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