A modern seal for metal is made under existing roofing. It may have a shape that matches the waveform of the covering material. This material is intended for sealing gaps. It eliminates the penetration of moisture, dirt and snow, as well as small branches and fallen leaves under the tiles.
Description
The sealant for metal tiles has ventilation cuts, which ensures the ventilation of the inner layer and the correct operation of the roofing pie. These seals can be made of foamed polyvinyl chloride, which has the qualities of elasticity and lightness.
In addition, this material has closed pores. It is moisture resistant, which allows for several decades to maintain quality even when it is constantly exposed to water. The sealant does not rot, is resistant to various influences, is environmentally friendly, environmentally friendly and has insulating qualities.
Main varieties
Sealant for metal can be classified in two varieties. The first is intended for laying between the profiled coating and the ridge and is called a direct seal. The second is laid between the cornice and the profiled base, as well as at the junctions. Its name is reverse seal.
Key seal specifications
The density of the sealant can vary up to 35 kg / m 3 . It has excellent waterproofing properties. This indicates that the absorption of water does not exceed 1.5%. The material is microbiologically constant, which suggests that it is resistant to mold and rot, the effects of aggressive environments, as well as chemicals.
A sealant for a metal tile can come into contact with gasoline and oil, without losing its quality characteristics. It is impossible not to mention environmental and hygienic safety, because products that are environmentally friendly are very much appreciated today.
This material is resilient and flexible, which facilitates installation work. Products are quite easy to cut, as well as welding with a soldering iron and a building hair dryer. The material can be glued using special compounds or double-sided tape. An alternative fixation solution is to use nails or a furniture stapler.
The sealant under the metal tile has durability, it is able to maintain its operational qualities for a long time. In some cases, the manufacturer speaks of 90 years, during which the material will not require replacement.
The temperature range of operation is quite wide and is measured in the range from -60 to +95 ° C. For private homes, fire safety standards are also important. The sealant under the ridge of the metal tile belongs to the class G2, which makes the material moderately combustible or flame-resistant.
Description of the seal for the ridge of the metal tile
As one of the important components of the drainage system of buildings for any purpose, a ridge sealant acts. It eliminates the penetration of precipitation under the roof and into the room. If you are the owner of a private house, the roof of which is poorly sealed, then you should be aware of the problem of leaks on the roof cake, which leads to the need for annual repairs.
The use of such an element allows to extend the operational lines of the rafter system and heat-insulating materials. Sealers are mounted between the metal tile and the ridge, as well as the base of the roof, even before the master starts installation. This is especially important for tent roofs when the sealing element is installed diagonally relative to the roof slope.
Varieties of ridge seals
A skate seal for a metal tile can belong to one of three types, namely to a self-expanding, universal and profile. The first variety is made from polyurethane foam, which is impregnated with a polymer during the manufacturing process. Acrylic may be used as the latter. To fix the seal on the surface of the element there is a self-adhesive strip. Ideally self-expanding parts are suitable for cracks in the arrangement of the roof.
Sealant for a ridge of a metal tile can be universal. In this case, a polyurethane film is used in the production process, which acts as a filter. Air can freely penetrate through it, but the material eliminates the accumulation of excess moisture without passing snow and dirt, as well as foliage.
As for the profile devices, they are made of foamed polyethylene.
The need for a seal
Many consumers are wondering why it is necessary to use a sealant for metal tiles, if the elements are so tightly pressed against each other. The answer lies in the fact that the sheets, although close to each other, so that the seams are not noticeable, there are still gaps between the additional elements of the metal tile. This is due to the fact that the Finnish and Russian metal tiles profile is in the form of a wave. This feature is the main distinguishing quality of the material for the roof.
The additional elements in the form of a ridge and a valley have a straight profile, therefore large holes remain between the wave and the plane, the width of which reaches 150 mm, while the height is from 20 to 30 mm. Thus, the sealant is installed on both sides of the profile on the ridge, on both sides of the valley, as well as on one side of the wall and wind planks.
Conclusion
The logical question is how much water can get into the space under the roof, because the covering material comes under the ridge 5 cm or more, while the ramps are inclined. If there is no wind, then moisture will not get, but if it is very strong, then the water will be driven inside. Rain water will fall under the roof, as for snow in the winter, which is driven even into the smallest crevices.