I would assume that roof area consists of all areas that can be seen from above the building.
Leed green roof definition.
Energy savings water efficiency co 2 emissions reduction improved indoor environmental quality.
Heat island reduction credit.
I am not quite sure on the definition of roof area and can t find a definition.
Many have claimed its value as a marketing tool trumps its use as a green building evaluation system.
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.
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.
Green roofs reduce the temperature of the building and the surrounding air in multiple ways.
We ll talk about the leed credits related to vegetated green roofs.
Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.
This course begins with the basic definition of a vegetated green roof and moves on to a discussion of green roofing policies in various jurisdictions focusing on american cities.
Leed leadership in energy and environmental design is an internationally recognized green building certification system providing third party verification that a building or community was designed and built using strategies aimed at improving performance across all the metrics that matter most.
There are 2 options for seeking this credit listed below.
The leed v4 1 building design and construction bd c rating system january 2019 applies to buildings that are newly constructed or going through a major renovation.
Previously in v3 roof was defined as area covering occupiable space.
For a v4 project could roof areas that cover unenclosed balconies terraces and walkways be excluded from the total roof area.
In the leed certification glossary a definition for roof is not given.
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.
Green roofs are also known as vegetative or eco roofs.
The wide variety of benefits associated with green roofs is captured to varying degrees in the u s.
They provide shade to the top of a building evapotranspiration.
Green building council s leed rating system.
While every green roof project is unique and the extent to which a green roof on any building can help earn credits varies this guide offers basic direction in maximizing the green roof design to help achieve leed certification.
