Vapor barrier materials are indispensable today during construction work. Membrane ones are one of the most popular and widespread ones, because they are able to protect the structure from moisture and wind, creating a comfortable microclimate inside the building. There are a lot of construction solutions on the market today, but Tyvek is a vapor barrier that is considered one of the most effective.
Description
If you want to choose high-quality vapor barrier, then it is worth getting acquainted with products under the Tyvek brand, which has a non-woven structure. These membranes are composed of low-pressure polyethylene, and are manufactured using ultra-fast fiber formation technology. The elements are connected to each other under the influence of high temperatures.
This technology provides enhanced protective properties, guarantees vapor tightness and high strength. The characteristics make it possible to use Tyvek membranes to protect the exterior of the houses, vapor barrier of the roofs and for temporary coating during construction delays. To obtain the optimal effect, it is recommended to use the material in combination with fiber insulation and a waterproofing membrane.
Key Features
“Tyvek” - vapor barrier, which compares favorably with similar materials like “Yutofol”, “Izospana” or “Nicobar”. Among the advantages should be highlighted:
- no need to provide ventilation clearance during installation;
- ability to remove moisture from thermal insulation;
- extended service life of wood structures;
- maintaining the desired level of vapor barrier while maintaining vapor tightness.
This material for half a century is able to perform its functions without loss of quality.
Specifications
Vapor barrier “Tyvek”, the characteristics of which will be presented below, is offered for sale in several varieties, each of which has its own characteristics. You can find seven membranes that are produced by the manufacturer under the following designations:
- Soft
- Supro.
- Solid
- Solid Silver.
- Housewrap.
- AirGuard SD5.
- AirGuard Reflective.
The most important characteristic in this case is vapor permeability. For the first two solutions, this parameter is 0.02 Sd (m). The third and fourth options have vapor permeability, which is 0.03 Sd (m). The fifth, sixth and seventh membrane variants have a vapor permeability of less than 0.02; 5-10 and 2000 Sd (m), respectively.
The number of layers may differ, for example, in the first, third, fourth and fifth variants, the layer is only one; in the second and sixth - two layers. And only the last version of the membrane is characterized by the presence of 4 layers. All of these solutions are windproof, but the operating temperature varies from -40 to +100 in the 1st and 5th variants, while in the last two the range is slightly smaller and ranges from -40 to +80 ° .
The last two membranes are designed for laying on the wall and roof, while the first membrane can be used exclusively for roofing, but the fifth - for walls. Each of the solutions presented by the manufacturer can be operated for more than 50 years.
Installation Recommendations
“Tyvek” - vapor barrier, which must be installed according to a certain technology. To do this, the roll should be rolled across or along the rafters, secured with brackets, the distance between which should be a limit of 30 to 50 cm. Then the master should proceed to install a counter-grill, which will provide a gap between the finish and the insulation layer.
The areas of fastenings and abutments, as well as places of overlap should be treated with insulating tape on an acrylic or butyl base. This approach can also be used when breaking the web. "Tyvek" - vapor barrier, which should be laid with the inscription inside. If you have to carry out work in the attic cold rooms, which are provided with winter heating, then vapor barrier for them is not required. In this case, the membrane should be located under the overlap of the upper floor. The technology for wrapping external walls will remain the same as in the case of roofing.
More about vapor barrier Airguard SD5
Vapor barrier "Tyvek" Airguard SD5 has an area of 75 m2 in one roll. This building material is used for vapor barrier of frame houses and insulated pitched roofs. The material retains its properties while maintaining the desired level of vapor barrier.
Steam transmission is controlled, which is ensured by a high-tech layer applied to the reinforcing base. If such a vapor barrier for the roof “Tyvek” will be used in conjunction with a heater, this will achieve a temperature-humidity balance, which is close in characteristics to a wooden house.
Among the advantages of this material, it is necessary to highlight the exclusion of the greenhouse effect, maintaining a comfortable temperature inside the building, protecting the building from destruction, durability, strength and environmental safety.
More about the technical specifications of Airguard SD5
The above vapor barrier for the Tyvek roof is 100% composed of a polyolefin with a thickness of 430 microns. One roll weighs 14 kg and its dimensions are 50 x 1.5 m. The breaking load along and across is 200 and 170 N / 5 cm, respectively. Vapor permeability in 24 hours is equivalent to 0 g / m 3 , while water resistance is equal to 3 m of water. Art.
Analogs of vapor barrier "Tyvek"
“Tyvek” is a vapor barrier, analogues of which are presented on the market today in a wide assortment. Among others, Izospan, which is used as a vapor barrier for the protection and insulation of building structures for various purposes, should be highlighted.
Areas of use for this material are:
- frame walls;
- attic floors ;
- insulated sloping roofs;
- floor floors;
- basement ceilings.
This material is able to undergo exposure to sunlight for 4 months, it is based on polypropylene, and the vapor permeation resistance is 7 m 2 / h * Pa / mg. Another analogue is the Utafol vapor barrier film, which is a micro-perforated membrane that prevents the penetration of moisture into the premises, while it does not interfere with the evaporation of condensate. The membrane is sold in rolls and is offered for sale in several varieties: “Utafol”, “Special” and “D Standard”.
Conclusion
If you vaporize a wooden house using a Tyvek membrane, you can take advantage of many benefits. For example, to eliminate the greenhouse effect, create an optimal microclimate inside the premises, increase the energy efficiency of the house and increase the operational characteristics of the structure.