Buildings account for around half of primary energy consumption hence co 2.
Green roofs save energy.
Even when the weather turns cold green roofs still prove their usefulness by creating heat.
Green roofs remove heat from the air through the process of evapotranspiration and also act as insulators for buildings reducing the energy needed to provide cooling and heating.
Accordingly the structure s air conditioning system doesn t have to work as hard.
Green roofs benefits improved energy performance temperature of waterproofing membranes under green roofs.
The study looked at a range of benefits of green roofs including stormwater management improved health benefits due to reduced pollution and energy savings.
When it comes to cooling green roofs also help because natural plant and soil processes reduce the level of solar energy that is absorbed by the roof s membrane.
Over its estimated lifespan of 40 years a green roof would save about 200 000 of which nearly two thirds would come from reduced energy costs.
Nearly two thirds of the savings come from reduced energy needs for the building below it.
Green roofs and energy performance.
Green roofs do provide potential energy savings by improving building insulation.
Another important financial benefit.
The roof of a building can be fully or part covered with a layer of vegetation known as a green roof.