In the stylobate parts of buildings, underground parking lots or trade enterprises are often placed. Stylobate roofs also often become useful areas: pedestrian, recreational or green areas are equipped there. Technologically, they are usually designed and built according to the principle of an exploited inversion roof.
In traditional roofing, the finishing layer is waterproofing, which protects the entire roofing "pie" and rooms under the roof from the effects of precipitation. In the operating roof, the waterproofing layer itself needs protection, first of all, from mechanical damage.
Unfortunately, the waterproofing of the stylobate roof is vulnerable to mechanical stress, especially for widespread bituminous coatings. So, for example, the service life of the deposited bitumen waterproofing materials does not exceed two to three years, which is largely due to mechanical damage with subsequent roof leaks.
In all versions of the inverted roof under the PENOPLEX® thermal insulation layer, the waterproofing will last longer. This insulation not only fulfills its main functions of reducing heat loss through the roof, but also protects the waterproofing layer. This is due to the high strength characteristics of PENOPLEX® boards.
The compressive strength at 10% deformation of this material is not less than 0.15 MPa, and for especially strong grades (PENOPLEX®45, PENOPLEX®45S) this indicator reaches 0.5–0.6 MPa. The modulus of elasticity of PENOPLEX® is 15 MPa, and the ultimate strength in static bending is from 0.2 MPa.
The manufacturer of PENOPLEX® thermal insulation has developed technical solutions for the arrangement of inverted roofs, including for stylobates and parking lots, with a high degree of waterproofing protection from mechanical damage. For example, a green roof:
In this case, it is proposed to use a reliable PLASTFOIL® polymer membrane as waterproofing, which is also produced at the PENOPLEX factories.
