And reduce heat loss due to wind by up to 50 compared to a bare roof.
Sedum roof insulation.
Deep layers of substrate growing medium are extremely heavy.
Sedum can withstand drought for example in very hot summers.
The combination of substrate plants and the embedded air in the green roof system provide good sound insulation.
A sedum green roof is not quite as good an insulator as a wildflower green roof.
Our mineral wool green roof growing mediums help to produce innovative extensive green roofs which support sedum moss herbs grasses and other vegetation where low or no maintenance is required.
The deeper the growing medium on your green roof the better it will insulate.
The substrate blocks the lower frequencies while the plants absorb the higher frequencies.
These materials are covered by a waterproofing membrane which prevents moisture from entering the structure.
However there s a compromise here.
Sedum has very shallow roots a key requirement for an extensive green roof considering the modest depth of the substrate layer.
Key considerations when designing green roofs include overall weight of the system to ensure it can be supported by the roof structure in addition.
During the winter months it is possible to gain up to an extra 25 insulation in dry conditions by installing a green roof.
It can also raise the outside temperature of the roof on average by 4 5 c when the weather is cold.
Sedum roofs are lined with plant life rather than traditional roofing materials.
In addition to thermal insulation a green roof also has a sound insulating effect.
Sound waves are absorbed and reflected.