Residential Green Roof For Slope

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.

Residential green roof for slope. 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. 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. 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. All green roofs are built upon a roof deck and may be made from concrete steel or wood.

Extensive roofs can weigh between 15 and. A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles. Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. For extensive green roofs it s good to use moss sedum herbs and grasses.

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. 2 extensive green roof. 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.

Residential green roofs such as theirs protect natural waterways from oily street residue by lessening the chances that municipal storm drain systems will overflow. For semi intensive green roofs consider grasses shrubs small trees woody plants and herbs. They may be flat or sloped. 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.

Drainage thickness of growing media plant varieties etc. It is the task of the designer to make adjustments in the green roof system accordingly e g. You must address several structural concerns before you can embark on creating a green roof. The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.

Seed mixtures can be bought specifically for green roofs. Vegetative roofs also known as green roofs are thin layers of living vegetation installed on top of conventional flat or sloping 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. Basic green roof components include the base roof deck water proofing layer and green roof systems.