Roofing films for vapor and waterproofing of the roof.

What is the roof?

Many believe that the pledge of good insulation from moisture - it is a good roofing. Yes, of course, it protects against moisture, but there is another effect of steam, occurring inside the premises. It Roofing films protect the interior of the building from moisture, provide waterproofing and vapor out into the external space.

POLYETHYLENE FILMS

polyethylene film used for steam under-roof and waterproofing. Such materials are reinforced with a special mesh or cloth, which gives them additional strength.
There are two types of polyethylene film reinforcement:
Perforated - have a high degree of permeability, due to a rare micro. The most frequently used in waterproofing.
Punch - used for vapor barriers.
But in fact, in either case you must leave a vent gap above the insulation.
In conventional reinforced polyethylene films as a vapor barrier is used special reinforced polyethylene material laminated on the inside with aluminum foil - a film with reflective layer.

POLYPROPYLENE FILM

In modern building popular films such as polypropylene with anti layer, and without it. High enough consumer demand for this type of vapor and waterproofing materials maintained by the reasonable price and good strength of the film.
The main advantageous differences polyethylene to polypropylene films is:

• higher strength
• increased resistance to ultraviolet radiation (note that andikondensatnye films are UV stable for 12 months, and film grade silver - only 10 days).

This roof after the installation of such a film can go without coverage for longer periods than other waterproofing films. In addition, it can withstand high mechanical loads (but temporary), for example, a layer of snow or a man's weight.
As with every material from polypropylene films, too, has its own nuances. They had a great hold moisture and prevent it from rasprostronitsya, but it should be emphasized that the Anti-condensation of the film successfully cope with tasks only in the presence of two ventilated air gap - the lower and upper. This is explained by the fact that recourse to the insulation side of this film has an unusual fuzzy surface through which moisture under adverse conditions is delayed at the lower surface due to the pile.

MEMBRANE

concept is applied to the membrane waterproofing materials. Their peculiarity lies in the fact that they are very important for the device pitched roof property: the steam passes through them, but no water. They consist of a nonwoven material of synthetic fibers, microstructure which provides high vapor permeability.

the Ukrainian market are:

• Diffusion membrane - it is characterized by very small holes. Tightly clutching a tape for insulation, you will ensure that the holes intersect, and the membrane will stop flowing water vapor. And so as quickly as possible to produce a pair of upper vent gap diffusion membranes can be only in the presence of two ventilated gap - the lower and upper.

• Superdiffuzionnye membrane - have higher permeability. Therefore, the membrane can be easily installed close to the heater without the bottom ventilation gap. They easily pass coming out of a pair of insulation in the upper air gap, where they subsequently removed from the air flow. Polypropylene membrane by micro in the form of craters, which are the wide side facing into the room, letting steam, with delayed infiltration of moisture from the outside. With this waterproofing water vapor better weathered, and can do without ventilation gap between the insulating and waterproofing layer.

on the market?

European market leader of insulation materials include such brands as Juta (Czech Republic) , Dorken and BBA (Germany), Du Pont (Luxembourg), Web Dynamics (UK) and others unchallenged primacy of the past few years belongs to the Czech company Juta , which offers products under brands « Gidrobarer »,« Parobarer »,« Antikondensat »,« Evrobarer ».