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Vapor barrier & vapor barrier for loft conversionIn the renovation of old buildings, great importance is attached to the insulation, as this can have a positive influence on the heat balance of the house. It is necessary to install a vapor barrier.
Due to the insulation in the interior, on the one hand, the temperature of the walls increases, on the other hand, it cools down much faster behind the insulation. This leads to the formation of condensation water, which can penetrate the masonry. A vapor barrier prevents this.
What is the job of a vapor barrier?
Basically, this can already be found in the name. A vapor barrier will not let any moisture through. By attaching a vapor barrier, the insulation material is protected from moisture absorption. The insulating materials are usually made of mineral fibers that absorb moisture very well. However, once this is done, they can no longer fully perform their damming function. Therefore, a steam brake is installed immediately during the renovation or new construction of a house.
How is a vapor barrier built?
Actually, a vapor barrier is nothing more than a foil on
the inside of the insulation is attached. This prevents damp room air from entering the insulation. The application of this film is not difficult. To attach, use either a tacker or tape. You can slide the film lengthwise or across
attach to the rafters. It is important that when applying a sufficient contact pressure prevails.
When cutting the vapor barrier foil, make sure that it overlaps on the sides. If the film is attached, it is either again attached by a counter battens or you bring the same room cladding. Of course, after attaching the film, it remains immensely important to carefully glue the overlaps. For this purpose, film adhesive tape is taken. This is on the one hand from the same manufacturer as the foil or you can use another product.
For correct attachment the instructions of the manufacturer should be strictly observed. There are a variety of films that are suitable for a variety of applications. Some are self-adhesive, others are designed so that they can be easily measured, for example, by strips.