The various models of avoids-vapeur
The vapor barrier is different from the paper avoid-air whose component is a membrane recovering the paperboard fiber by outside. This last is permeable with the air but allows to escape through the walls only for one high rate from this one.
This system ensures the sealing of the walls external and the ceiling of the stage. It does not make it possible the steam to acquire an insulator and is installed with the top of insulating wool. It can be sold in the form of polyethylene membrane of 0.15 mm thickness, or 0.006 Po, in rollers. The widths are appropriate for the walls height 8 or 12 feet.
There is also the reflective model composed of a paper of type kraft covered with an aluminum foil. It is the latter which reflects the light towards the interior of the habitat. It is less resistant than the first type and the many joints can be factors supporting moisture.
Installation of this system
This is done in several stages:
- The screen of this one is attached to the rafters.
- The screens are to be overlapped of approximately 10 cm and the joints must be stuck well so that it is impermeable. They should not be perforated.
- The slats are placed perpendicularly on the rafters.
- The top coat is dependant with the slats of construction.
- To set up the vapor barrier: the roller is posed with the vertical close to the wall, it will be thus easier to unroll it.
- One needs pressures along sealing to constitute an impermeable joint between the film and the frame.
- The joints are then placed and must be overlapped on 2 frame members. The amount intended for the first membrane is to be coated with sealing. Afterwards, it is necessary to put a cord of sealing and to cover it at it with this system. Thereafter, the second membrane constitutes the joint.
- Should be given off the electric boxes: the openings of the doors and the windows are then to consider. The vapor barrier of the latter are to be perforated by tracing X with the universal knife on the level of the point of opening.
- The insulator is to be covered and it is also necessary to place edges on the level of the partitions.
Some parameters to be known on avoids-vapeur
Before placing a vapor barrier, cleaning is obligatory. For that, a brush and a vacuum cleaner make it possible to remove dust and the remains.
The scraping of painting is also essential. For washing, it is necessary to use water and soap. Once that, should be applied a cement is done to rub the walls with a brush or a roller. One needs a cement for higher quantity for certain parts so that the barrier adheres well.
Polyethylene is to be deployed on the ground then one adds cement to the lower part. It is necessary to wait half an hour before placing the barrier on the surface of the wall. |
