Cheap and expensive vapor barrier: what is the difference
When using any building, moisture forms in it. Further, it changes into steam, which condenses on the protective structures. If this process is long, then the structures are deformed and the ability to isolate heat under its action is reduced.
Vapor barrier
Thus, in order to avoid problems, a vapor barrier method was created. It is a process of building structures and materials that isolate heat from steam penetration and condensate absorption.
Additional "advantages" of the method
As a result of this method, many additional positive consequences remain. The wall, which is protected from moisture from the inside, contributes to the long-term preservation of structural strength. Almost zero chance of black mold on the surface. Favorable conditions for air humidity are created inside the room, as a result - you can save on heating and air conditioning.
Problem of choice
Accordingly, the majority has the following dilemma: choose a cheap or expensive vapor barrier? Of course, any type has its advantages and disadvantages. Further they will be considered in more detail.
Comparison of expensive and cheap vapor barrier
It is impossible to absolutely say that expensive material is the most high-quality and reliable. It should be noted that the material can be selected from a low price category, however, the purchase of cheap coating is likely to entail consequences in the form of re-isolation. It is important to consider that often the cost of coating depends on the parameters of the roll (length, width) and molding. Therefore, when buying, it is important to consider the price per 1 square meter of material, this will determine which material has an acceptable price and which is undeservedly expensive.
Purchased material will serve as a kind of blanket for insulation. This must be taken into account when calculating the required amount of coverage for use in floors. Therefore, the edges of the film should overlap the ends of the mineral wool. During installation, it rolls into the vapor barrier, and then - firmly and reliably joins the lags. These actions increase coverage consumption.
The choice of manufacturers is very diverse and depends on the cost of vapor barrier. Each type of film is used in a specific situation.
And finally. When choosing a material, it is necessary to take into account its service life. So the choice of coverage depends on the preferences and goals of the buyer.
