Thickness Green Roof Layers

Intensive green roofs have a higher weight and require a minimum soil thickness of at least 30 cm compared to the 5 12 cm of the latter.

Thickness green roof layers.

A green roof system consists of four layers. The green roof drainage layer thickness makes sure that nothing can go wrong below offering a solid and effective guard. Simpler shallower cheaper green roofs with limited variety of plants are called extensive green roofs these systems are easy to install require little to no maintenance or irrigation and weigh the. Each green roof is unique as their designs and performance vary by region climate and building type and use.

Protection and filtering layers drainage of the green roof together with control boxes delimitation elements evacuation gutters are key components of a green roof system. Intensive green roofs roof gardens and extensive green roofs. The nominal thickness of a green roof is the approximate total height of the soil and drainage components that constitute the green roof system excluding the roof structure insulation waterproofing and plants. There are two different types of green roofs.

Also the green roof drainage layer material is made to be sturdy and strong so that piercing can be limited and that the integrity of the entire program can be retained with ease. Thicker welded root barriers will be needed for green roofs involving trees bamboo or other vigorous spreading grasses. This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value. Intensive to describe green roofs that are thick enough.

A drainage layer a filter layer a growing medium layer substrate and a vegetation layer. G 2 intensive green roofs have a growing media layer that ranges from 6 to 48 inches thick. Types of green roofs. Successfully managing this composite structure is the key to creating a green roof system that performs well over the long term.

By alan burchell rubyana lyon green roof mar 3 2017. They fall into three main categories extensive intensive and semi intensive. It is common practice to use the term extensive to describe green roofs that are very thin and will only support hardy drought resistant vegetation such as sedums herbs and perennials. It is important to check the compatibility of the product with bitumen and polystyrene especially where there is direct contact with a bitumen based waterproofing or polystyrene insulation.

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