The waterproofing film is one of types of plastic films which is in great demand. At work on waterproofing it is important to know features of use of such material, otherwise your time and forces will be spent in vain.
Waterproofing — obligatory technology operation for each building. It is the most important element of construction on which quality of performance the building life cycle depends. The waterproofing of building constructions is carried out with use of special film which has different names: waterproofing film, hydrobarrier or superdiffuzionnny membrane.
Properties of waterproofing film
Distinctive feature of waterproofing film are two of its properties: vapor permeability and water repellency. In a word, such film passes air, but does not pass water.
Vapor permeability
It is ability of material to level partial pressures of water vapor from two parties with equal atmospheric pressure. It means that all structure of the building can "breathe", and it substantially prolongs life of any building.
Water repellency
As barrier to water serve three layers of waterproofing film: average which consists of strong polyethylene fibers, and two outer layers consisting of quality polyethylene.
Types of waterproofing film
The waterproofing film is issued two types: flat and perforated. The first option is applied to brickwork waterproofing, since the base and also at the device of floor coverings, protection of floors in the conditions of the open ground. Such type of film is most resistant to influence of chemicals. The perforated film has special cells in which on limit of the section of material the water vapor can circulate and be condensed moisture. Such film is applied to protection of the bases, socle and basement parts of the building and also to the organization of "green" roofs. Perforated film — the best option for flower beds and lawns on roofs and windowsills.
Features of application of waterproofing film
1. It is necessary to observe precisely purpose of flat and perforated film.2. Before laying of material it is necessary to level surface and to make sure that on it there are no sharp small objects and lumps which can break integrity of waterproofing film.3. It is important to study attentively the instruction to film, especially point describing what the party it is necessary to stack material. Usually all modern waterproofing films double-sided, however on sale also the one-sided option.4 can come across. It is not recommended to allow contact of waterproofing film and heater as the film can lose the properties of vapor permeability. 5. Overlap width when mounting film has to be 8-10 cm 6. It is necessary to pressurize overlap of sheets by means of the assembly gluing tape.7. Color of film does not matter.