Residential Green Roof For Slope

Basic green roof components include the base roof deck water proofing layer and green roof systems.

Residential green roof for slope.

Vegetative roofs also known as green roofs are thin layers of living vegetation installed on top of conventional flat or sloping roofs. They may be flat or sloped. You must address several structural concerns before you can embark on creating a green roof. The green roof will be composed of a liquid applied waterproofing membrane an inch thick root barrier three inches of insulation a 1 inch drainage mat with filter fabric and 8 inches of growth medium with an integrated cellular confinement system.

For extensive green roofs it s good to use moss sedum herbs and grasses. We have chosen to use the word vegetative rather than the word green in this guide because a non vegetative roof could be considered to be environmentally green without being vegetative. Sloped roofs retain less water in general and the moisture content varies from the ridge to the eave lowest edge of the roof. It also keeps the room below it warmer in winter and as much as 6 to 8 degrees cooler in summer thereby reducing utility costs.

With an extensive green roof vegetation is thinner 1 6 to five inches thick and lighter with appropriate plants that will make them low maintenance and self sustaining. The soils of a green roof will capture a significant amount of stormwater which is absorbed and used by the planted material. All green roofs are built upon a roof deck and may be made from concrete steel or wood. Seed mixtures can be bought specifically for green roofs.

The slab will be supported on nine steel columns with five girders and 45 beams situated to create the saddle like hypar roof shape. For semi intensive green roofs consider grasses shrubs small trees woody plants and herbs. 2 extensive green roof. The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.

Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. Residential green roofs such as theirs protect natural waterways from oily street residue by lessening the chances that municipal storm drain systems will overflow. Extensive roofs can weigh between 15 and. Drainage thickness of growing media plant varieties etc.

Perhaps the most important benefit of green roofs is that they can reduce the amount of and improve the quality of stormwater runoff from a building site. Most critical for a low slope roof is weight bearing capacity. The most versatile of all is intensive green roofs which can host virtually all plants and be treated much like a garden. Any large slope or flat roof that s hard to reach makes a great area for this kind of vegetation as nature will take care of itself.