Ventilated roof

As a rule, those who neglected to detail the project and decided to check his erudition on the construction of his house, waiting for the November surprise, associated with wide swings in air temperature near the zero mark. Roof tested the September and October rains incessant rains, the house is closed, the windows sealed, full swing, finishing work. Where you are getting wet, if the roof vented? The concept of "ventilated roof" implies the presence of three loops of ventilation: ventilation space between the coating and waterproofing, which covers all the planes, regardless of the complexity of roof ventilation space between insulation and waterproofing, which excludes the presence of stagnant zones; ventilation underlay space, which is part of the ventilation system at home. For decades, imperfect building materials and technologies allowed (or forced) to build the house, breathing through the wood, brick, cracks in masonry, cracks in windows and doors, gaps between layers of glassine or roofing material, in which randomly combined (or merged), all three required ventilation circuit. Payback for the seeming simplicity was, at best, drafts, higher heating costs, familiarity with glass wool and significant restrictions on the designer's fancy interior decoration. In the worst case, if the cracks were not enough, in the most unexpected places appeared damp. Special vents were held only in bathrooms and kitchens. Modern roofing materials are allowed to decide this question. In formulating the problem in designing their home, pay special attention to the ventilation system. For those who wish to independently carry out a preliminary examination of the project recall the two main rules teplokrovelschika: 1. couples seeking upward (and slightly sideways). 2. water tends downward (and slightly sideways). Investigation of the two main rules are: when installing a vapor barrier is not enough overlap blades at each other on the walls and structural elements, the joints should prokleivat strap. in the absence of ventilation the internal space of the house, even gluing a special tape is not completely prevent the ingress of moisture in the insulation at a high pressure steam. For example, if the capacity of a vapor barrier 1 gram per 1 sq. km. m surface per day, 100 days in 100 square meters. m vapor barrier under the influence of vapor pressure up in the form of steam penetrates a bucket of water. Ventilation literally allows you to "let off steam from a boiler, because the consequences of the sudden appearance of a heater is not that bucket, but a glass of water sometimes commensurate with the consequences of a locomotive boiler explosion. walls should not "breathe" as detained in the outer layers of wall moisture can lead to the bundles during freezing, and through the wall moisture can penetrate the "roof pie." • can not be ignored ventilated small rooms and spaces. vapor barrier must be installed as close as possible to the inner space of the house. • to correct errors the waterproofing, it is necessary to dismantle the roof covering, to correct errors that occur when the device vapor barrier is necessary to provide access to a vapor barrier inside the house. We hope that you did let off steam "and described above will not affect your home.