Green Roof Heat Loss

By lowering air conditioning demand green roofs can decrease the.

Green roof heat loss.

Green roofs improve air quality. Importantly this also moderates heat flow through a building by shading increased insulation and thermal mass. In winter the green roof minimizes heat loss through added insulation on the roof. This energy is known as latent heat.

Because green roofs store water in the growing media and plants latent heat loss is accomplished via transpiration from plants and evaporation of moisture from the growing medium collectively referred to as evapo transpiration. In summer the green roof protects the building from direct solar heat. A 2005 study by brad bass of the university of toronto showed that green roofs can also reduce heat loss and energy consumption in winter conditions. They can reduce heating by adding mass and thermal resistance value also can reduce the heat island by increasing evapotranspiration.

Green roofs remove heat from the air through the process of evapotranspiration and also act as. Thermal reduction and energy conservation. Under a green roof however the fluctuations were in the order of 6ºc. Green roofs improve and reduce energy consumption.

The positive effect on the temperature of the membrane under a green roof protects the membrane from the effects of uv frost and sunlight. Energy conservation translates into fewer greenhouse gas emissions.