Green Roof Construction Definition

Green roofs are also known as vegetative or eco roofs.

Green roof construction definition.

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. Although there are no precise definitions of. Two types of green roof exist. But they also must create a growing area and potentially provide support irrigation and root protection barriers while staying as light as possible.

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems. Green roofs reduce the temperature of the building and the surrounding air in multiple ways. 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. It replaces the ecology the new house sits upon thereby replacing the habitat that a house takes away.

An extensive green roof can reduce sound from outside by 40 decibels while an intensive green roof can reduce sound by 46 50 decibels peck et al. A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof. They fall into three main categories extensive intensive and semi intensive. Used over a whole roof a green roof will be the single overriding design influence on the house as well as impacting on the construction right down to the foundations.

What is a green roof. Extensive green roofs are lightweight with a shallow layer of growing substrate of less than 200 mm deep requiring minimal maintenance. They provide shade to the top of a building evapotranspiration. Depending on the weight capacity of the building s roof and the aims of the design.

The plants in a green roof absorb water through their roots and then use surrounding heat from the air to evaporate the water while some roofs can reach temperatures of up to 90 f in the summertime these two features can allow. A green roof is in ecological terms a great and simple thing to do. Green roofs have excellent noise attenuation especially for low frequency sounds. The layers of a green roof must like any roof accommodate drainage and protect the building from the elements with a waterproof membrane.

Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.