TYPES COVERED PROPERTY AGENTSROOFS
There are many existing constructive solutions covers the communities of owners, try denominated covered here gardens, also called green roofs, green roofs or ground cover, developed to encourage plant life on the decks. The most characteristic feature of the green roof is its outer cover layer consists of a substrate of small thickness which houses plant species of little or no maintenance. Depending on the thickness of the cover layer can be classified into two groups green roofs:
Extensive green roofs also known as ecological roof gardens: They are usually green roof not passable and outer cover layer comprises a substrate with a thickness of less than 15 cm that allows the development of plant species of low water needs favoring some needs low maintenance.
Covers intensive garden: The thickness of the substrate is larger and allow the development of a broad spectrum of plant species. This type of roof gardens usually an irrigation system is incorporated, usually cubiertastransitables and require greater maintenance.
The structure of lascubiertas extensive ajardinadastanto as intensivases, from bottom to top: waterproofing layer, non-stick separating layer, thermal insulation layer, drainage layer, filter layer and last layer of substrate and vegetation. The waterproofing membrane is usually done with bituminous materials with a recycled content, and products derived from polyethylene (EPDM), usually monolithic membranes and incorporate a antiraices system (especially in intensive green roofs). The layer of insulation in the roof gardens usually extruded polystyrene insulating material having a high resistance to water penetration.
Elaislamientoen important Aislamiento TÃ©rmico and roof gardens of communities of owners (ensure water tightness and thermal insulation) are the components of water retention and drainage. These should be designed to allow water retention while good drainage and aeration, so as to ensure a good balance between water and air is ensured.
The drainage layer of green roofs usually consists of recycled polypropylene fibers or recycled polyethylene panels. The former allow water retention and nutrients to the substrate by evaporation or by contact with the plant roots and has a series of holes that allow air circulation and ventilation of the soil and roots. The drainage layer in the roof gardens perforated plates made of polystyrene, a porous or gravel material are solely a function of drainage control, no water retention capacity.
The filter layer in the roof gardens of communities of owners prevents the fall of the soil and usually consists of a geotextile material made from polyester fibers. The substrate support vegetation, must meet a number of features: water retention capacity, permeability, air capacity and erosion resistance. It provides essential nutrients to plants and depending on the type of green roof a proportion of 75 mineral soil and organic soil 25 (extensive green roofs) and 55 and 45 mineral organic soil (intensive green roof) is recommended.
The Aislamiento TÃ©rmico roof gardens depend on the type of green roof chosen by the homeowners. intensive roof gardens can include all kinds of vegetation: herbaceous, lawn, vines, shrubs (boxwood, roses), small evergreens. the extensive green roof is desirable that the plants have a shallow root system and require little maintenance. It is generally recommended that the vegetation chosen for green roofs is resistant to climatic conditions, act as groundcovers, perennials and are low maintenance.