The roofs are the elements of the outer shell, which are more exposed than all the others to the effects of the environment, which constantly stress their surface and are the cause of most of the damage. Material delamination, blistering in the layers, premature ageing of sealing and insulating materials, cracks and crazing, formation of rashes and stains on the internal surface are just some of the damage suffered by roofs, which are generally caused by incomplete, poor or inadequate protection. A prerequisite for avoiding all these problems and for their proper operation is the observance of certain technical rules and the application of the principles of the physics of construction and, in addition, the continuous maintenance and protection of the project throughout its life. The thermal insulation of a roof can be achieved in 4 alternative ways: It is the most common type in our country. It is a monocoque construction, with the main feature of placing the waterproofing layer in an overlying position of the thermal insulation, in order to protect it from rainwater but remains exposed to the weather and the hot Greek sun. The thermal insulation layer is usually placed above the load-bearing slab or above the slope layer. In the attic, it is preferable to place the thermal insulation layer above the load-bearing slab, rather than below it, as this allows the thermal capacity of the slab to be exploited. The thermal stress on the slab is now clearly limited and allows a more comfortable interior climate to be created in summer. In the conventional roof can be used graphite Expanded Polystyrene NEOCOAT TX EPS 100, ISOPLAK TX EPS 120, ISOPOR EPS 150 and ISOCOAT TX EPS 80 in the appropriate thickness according to the KENAK. The slopes required for water drainage in the gutters are proposed to be made with lightweight concrete prepared with special granules of ISOLBETON Expanded Polystyrene at a density of 300kg/m3 for the least possible burden on the structure, but also for additional thermal insulation. As a final layer, the choice of materials depends on the use of the roof. This can be non-passable or passable and the passability required depends on the frequency of use. Above the thermal insulation layer, a geotextile is laid which filters the rainwater from soil, dust and garbage, keeping open the passages to the endings of the gutters, but also protecting the thermal insulation layer from the sun.If the roof is not often used so the patency is not required, pebbles can be used (non-patency). But if it is used frequently then the addition of taras slabs over the thermal insulation layer makes the roof passable and by using a cross spacer at the joint of the slabs allows ventilation and creates a thin layer of ventilation between the thermal insulation and the taras slab. Ventilation in the roof is essential and particularly beneficial in our country because of the intense and frequent sunshine. It facilitates the function of the thermal insulator and prevents overheating. The slopes required for water runoff in the gutters are constructed above the bearing plate and it is proposed to be made with lightweight concrete prepared with special granules of expanded polystyrene ISOLBETON at a density of 300kg/m3 for the least possible burden on the structure, but also for additional thermal insulation. In the inverted roof it is recommended to use the pressed expanded polystyrene of very low water absorption PERIPOR EPS 200 in the appropriate thickness according to the KENAK. Not Bato: Bato: Thermal insulation of a planted roof For the thermal insulation of a planted roof, the methodology of a conventional roof is followed. The thermal insulation layer is placed above the bearing plate and the waterproofing layer is placed above the thermal insulation layer, in order to protect it from rainwater. In addition to the waterproofing layer, a drainage membrane, a layer of straw, geotextile fabric and a layer of planting soil are required for the planted roof. In the planted roof can be used graphite expanded polystyrene NEOCOAT BT-AM EPS 200, ISOPOR EPS 200 and PERIPOR EPS 250 in the appropriate thickness according to the KENAK. The slopes required for water drainage in the gutters are proposed to be made with lightweight concrete prepared with special granules of ISOLBETON Expanded Polystyrene at a density of 300kg/m3 for the least possible burden on the structure, but also for additional thermal insulation. Thermal insulation of existing roof For the thermal insulation of an existing roof, the method of inverted roof insulation is applied. Usually in old buildings the roof with or without slopes has mosaic as a top layer. If the slopes are checked and are not correct or need to be improved, they should be made again using lightweight concrete prepared with special granules of expanded polystyrene ISOLBETON at a density of 300kg/m3 for the least possible burden on the structure, but also for additional thermal insulation. Then the waterproofing layer is applied and above it the thermal insulation layer. On top of the thermal insulation layer, a geotextile is laid which filters rainwater from soil, dust and debris, keeping the passages to the gutter outlets open, but also protecting the thermal insulation layer from the sun.If the roof is not used frequently so that draining is not required, pebbles can be used. (not passable). However, if it is frequently used, the addition of taras slabs over the thermal insulation layer is always recommended with the use of a cross spacer at the joint of the slabs to create a ventilation layer. Ventilation in the roof is essential and particularly beneficial in our country because of the intense and frequent sunshine. It facilitates the operation of the thermal insulator and prevents overheating. In the existing roof it is proposed to use the pressed expanded polystyrene of very low water absorption PERIPOR EPS 200 in the appropriate thickness according to the KENAK. RIZAKOS company has the technical expertise to offer the lightest and easiest waterproofing and thermal insulation system for roofs or attics, ideally combined with the graphite or white EPS of RIZAKOS, placed as an intermediate layer between the waterproofing layers, either flat only for thermal insulation, or inclined for thermal insulation with simultaneous creation of slopes. The thermal insulation and slope waterproofing system is quick to install and highly resistant to severe weather conditions. The total weight of the system is 5 kg/m2 when any other solution is at least 25 kg/m2 and can reach 100 kg/m2. The speed of application is 3 times higher than that of similar technical solutions.
Applications
dome
Thermal insulation of the roof
Application
Conventional Toll
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Inverted Batch
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Planted Domaine
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Existing Domaine
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Sloped Thermal Insulation of the Body
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