The waterproofing of roof represents responsible stage of construction of the house. Operating ability and life cycle of all roof in many respects depend on quality of the materials used at the same time. The main function of waterproofing consists in protection of roof against impact of precipitation and in prevention of formation of condensate.
General information about materials for roof waterproofing
The range of the construction materials applied to the roof waterproofing device is very wide and gives opportunities for the conscious choice. The main requirement to similar protection – to interfere with penetration in the structure of moisture throughout long time.
Treat the materials for waterproofing which are the most widely applied in construction practice: film with perforation; the "breathing" membranes, silicate pitches, hydrophilic rubber, acrylate structures on two-component basis.
Film and membrane materials
Materials of diffusion type with microperforation. Are suitable for any types of roof. Micropores of films incorporate liquid which under the influence of air evaporates subsequently. Membranes of diffusion type have excellent ecological and fire-prevention properties. They with success are applied to protection of roofs against snow and rain. Films and membranes of this type serve many years.
Superdiffusion membranes. Differ in the fact that stack them without gap which is necessary for ventilation in case of use of materials of the previous look. These membranes provide dryness of structures of the building, reduce heat waste, perfectly pass steam. Material of such look is strong, resistant to destructive influence of ultraviolet. Most often superdiffusion membranes use for the roof device with metal tile or corrugated sheets from bitumen.
Membranes from PVC. At the heart of this innovation product – the plasticized polyvinylchloride. Softeners enter into material for giving of necessary flexibility to it. For ensuring bigger durability such membranes are reinforced by special grid. PVC membranes are durable, elastic, well resist to temperature and mechanical influences, it is quite easy to repair them.
EPDM membranes. This film material is produced from synthetic types of rubber, adding to it polymers. Are widely applied in areas with frigid climate. Advantages of such membranes: the invariance of working properties at low temperatures; high physicomechanical characteristics; simplicity of mounting even on roof of difficult profile; absolute water tightness and high resistance to precipitation.
It will be effective to work membrane of any type only when its mounting is executed according to the set technology and with use of accessories to which sealing strips and adhesive tape usually belong.
Waterproofing of liquid type
More often at the device of roof so-called liquid rubber is used. This covering is put by means of airless sputtering. Two workers easily cope with work on installation of such waterproofing though mounting and demands availability of the special equipment.
The liquid waterproofing effectively protects roof from moisture. After coating application there is no seam left, isolation turns out continuous. Liquid rubber provides coupling with any other material even if it has considerable age. Components of such protection do not contain hazardous substances. It is possible to apply material on roof designs even in the most hard frosts.
Waterproofing film
Such material by right is considered the easiest and simple way to provide roof waterproofing. The film of this type is usually used on sloping roofs which are going to be staled or metal tile. Material is capable to protect the building from formation of condensate which can appear on internal surfaces of roof structure. The waterproofing film effectively removes steam outside and interferes with penetration of drops of moisture into heater. It is recommended to stack at considerable bias of roof such film with small overlap. It is also necessary to remember that it is impossible to pull this material.
The getting waterproofing
As material for the device of such protection against moisture usually serves liquid glass. It is the non-toxic material representing water solution of silicates of sodium. It perfectly protects roof surface from moisture, influences of hostile environment of alkaline type and from corrosion.
Usually such method of waterproofing is used at the device of the roof having honeycomb. Impregnation by liquid glass fills small cracks, substance gets deeply in designs then stiffens. At the same time crystals which strongly clog up pores are formed and do building construction of stronger.
Other materials for roof waterproofing
Backing waterproofing. For implementation of this way known even to the nonspecialist, apply rolled and sheet materials (roofing material, viniplast, paper roof covering, roofing felt, ecoflex and others). Material represents some kind of waterproofing cloths. Before their laying apply bitumen emulsion on surface of roof. Then material is stacked with an overlap and fix glue.
Also very widely apply the most widespread materials, such as paints, varnishes and emulsions to the waterproofing device. They have acceptable utilization properties. For giving of waterproofing of bigger durability such materials put consistently with several layers, and then cover roof with fine-grained sand.
General requirements to waterproofing
The materials used for the device of waterproofing of roof structures have to have moisture impermeability, elasticity, mechanical strength, heat resistance. They have to capable be reliable to fasten to base roofing. That which besides the given qualities combines the protective properties protecting both from water and from cold will be ideal material.
Application in construction of materials of new generation in which production the last achievements of science and technologies are used provides not only reliability and durability, but also very long life cycle of roof which will not need periodic repair and preventive maintenance.