Green Roof Build Up Thickness

Extensive roofs are thin lightweight roof systems that typically have a planting media measuring 6 to 20 cm deep while heavier thicker green roofs are known as intensive roofs and their growing media ranges in thickness from 20 cm to 100 cm.

Green roof build up thickness.

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. Green roof build up technical spec sheet enviromat sedum roof early june contents sedum roof build up for flat roofs 2 sedum roof build up for pitchedroofs 2. 2 al40 edge trim frames and retains the xf301 system. Green roofs can help reduce energy costs for a building by acting as another layer of insulation between the inside and outside of the roof.

They provide shade to the top of a building evapotranspiration. A properly designed and installed extensive green roof system can cost 108 248 m 2 10 23 sq ft while an intensive green roof costs 355 2 368 m 2 33 220 sq ft however since most of the materials used to build the green roof can be salvaged it is estimated that the cost of replacing a green roof is generally one third of the initial installation costs. 30 50mm high at despatch one established plants will reach a height of up to 120mm depending on. 40mm high perforated edge drainage trim for bauder sedum blanket.

When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. The plants in a green roof absorb water through their roots and then use surrounding heat from the air to evaporate the water while some roofs can reach temperatures of up to 90 f in the summertime these two features can allow. 1 xf301 sedum blanket system with integrated water retention and filter layer. Green roofs reduce the temperature of the building and the surrounding air in multiple ways.

The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. Thickness 20mm excluding vegetation vegetation will be approx. Others would treat even steeper pitches as flat roofs. Your green roof design will depend on the roof your preferred green roof system as well as your desired build up and vegetation.

Semi intensive green roofs as their name states are a combination of the aforementioned two types. The weight of an intensive green roof system is critical for a particular type of plant and the minimum intensive green roof thickness should ranges from 150mm for a wild grassland 300mm for bushes and 3 meters in height and at least 400mm upper substrate and 250 mm lower substrate for small trees of approximately 10 meters.