Green Roof Thickness

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.

Green roof thickness.

Intensive to describe green roofs that are thick enough. Smaller thickness of the system will not compromise the performance due to the fact that urbanscape green roll can hold up to 3 4 times more water per its volume than other green roof substrates. Roughly speaking extensive green roofs have a thickness of between 4 and 15 cm and a weight of between 30 and 220 kg m2. 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.

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. 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. 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.