Green Roof Growing Medium Weight

The extensive green roof lightweight cost effective and probably the most popular of the green roofs.

Green roof growing medium weight.

Before the plants go up a structural engineer should check to ensure that the roof can support the weight of the engineered growing medium and plants. For a green roof installation that pitch should be at least inch per foot of run. Green roofs are made up of several layers typically a waterproof root barrier layer to protect the roof a drainage layer water retention mat then the growing medium and vegetation. Commonly referred to as growing media or soil substrates the growing medium used is an essential part of the green roof system.

In general the bulk of the water storage in a green roof buildup is in the growing medium. Careful consideration and planning is required during the design phase of a green roof build and a local growth expert should be consulted in order to develop the best system for your needs. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. What is a green roof.

Last for many decades. The simple answer is that the weight of a green roof is determined by the strength of your build or structure so there are a few things to consider when creating your own green roof. However the factors allowing for a lightweight roof can create a high stress environment for plant material. Types of green roofs.

Product datasheet saturated weight. These generally require a 5 15cm 2 6in depth of growing medium that can consist mainly of lightweight inorganic materials such as perlite leca sand rockwool and crushed tiles or concrete. Extensive substrate is a lightweight growing medium for green roof planting schemes manufactured to fll guidelines. Even a flat roof should have some pitch so that it sheds water toward gutters.

Be approximately 94 inorganic by dry weight 92 in british columbia as is the case with ecologically stable sustainable mature green roofs. Green roof system weights columbia green technologies 79 se taylor st. Liveroof engineered green roof soil is designed to. When saturated these layers can weigh in at more than 100kg per square metre or 20lbs per square foot.

The venny green roof has shallow substrates on two types of roof the first roof is on shipping containers and is designed for a dead load of 250kg m 2 and live load of 100kg m 2. Effectively grow liveroof plants.