Roofing technologies have recently taken new frontiers. Asbestos slate, which is familiar to many, is being replaced by more modern materials - bituminous slate, asbestos-free coating, a material based on fiberglass. One way or another, each roofing is characterized by durability, beauty and technical properties. This article contains information about these inexpensive and affordable roofing materials.
flexible slate
Bituminous slate is often called flexible slate. It is made by impregnating cellulose fibers with bitumen, with the addition of mineral additives, curable resins and pigments. The processing of the base is carried out under the influence of high temperature and pressure.
In this regard, the strength of the coating and its resistance to moisture increase significantly.
Bituminous sheets are used on roofs with a slope of at least 5 degrees. Their installation is due to such features:
- at a slope of 5-10 degrees, a continuous crate is mounted, the sheets are stacked with an overlap of 2 waves;
- with a slope of 10-15 degrees, the overlap is equal to one wave, and the pitch of the crate is not more than 450 mm;
- at an angle of inclination of 15 degrees and above, a crate is mounted in increments of up to 600 mm, the overlap is 1 wave.
Bituminous sheets are produced in various sizes. During their installation, waterproofing material is laid over the entire area of \u200b\u200bthe crate. This material has found wide application in the arrangement of the roof of private houses, industrial buildings.
It has the following properties:
- flexibility;
- ease of installation;
- strength;
- ease.
Due to the flexibility of the material, it can be used on domed and vaulted roof structures.
Attention. Used bitumen sheets can be used under other roofing as waterproofing.
fiberglass sheets
Fiberglass slate, which is a combined material, is widely used on the roof of verandas, awnings, greenhouses, in which glass fiber coated with a treated polymer acts as reinforcement.
The popularity of this material was brought by its characteristic properties:
- resistance to UV rays;
- high strength;
- heat resistance;
- ease of installation;
- ease;
- durability.
Fiberglass slate is available in a variety of colors and sizes in roll form. It can have a completely smooth or wavy profile. The most common roll sizes (m): 1.5x20; 2.0x20; 2.5x20.
Compared to a flat profile, a wavy profile is more resistant and flexible. . Fiberglass reinforcement of this material gives it strength under impact and bending. This roofing combines the best properties of polymers, metal and wood:
- despite its weight (4 times lighter than steel) it has high strength;
- Compared to glass, it has 3 times better thermal conductivity;
- does not rust compared to metal;
- doesn't rot like wood.
In addition to the above properties, the material has excellent light transmission.
To install it, you only need to build roof lathing from wooden or metal slats. Fastening is carried out with self-tapping screws with seals.
Asbestos-free sheets
Asbestos-free slate has a great visual similarity with ordinary slate. But compared to him, he has such indicators:
- long service life;
- strength;
- resistance to loads and impacts.
In the manufacture of this roofing, harmful asbestos fibers were replaced with synthetic, mineral or vegetable fibers.
This roofing material is characterized by the following properties:
- light weight;
- resistance to deformation, temperature extremes, exposure to biological components;
- resistance to corrosion processes;
- soundproofing.
Asbestos-free slate is mounted similarly to asbestos sheets. For fastening, nails are produced in the color of the decorative coating.
The light weight of the sheets allows you to equip them with a simple truss system and crate.
In addition, there is the possibility of installing them on the old roofing.
The scope of this roofing is quite diverse.It is used in the construction of houses, production workshops, agricultural buildings, enclosed spaces, temporary buildings.
Asbestos-free sheets are laid from the eaves to the ridge from right to left. Given the direction of the wind, a different laying method is often practiced, different from the traditional one - from left to right.
Basically, sheets are fastened with special nails, screws and anti-wind brackets are also used.
Advice. The gaps that form at the joints of the sheets are recommended to be sealed with a sealed mass or foam.
Most accurately characterizes the above-described slate - mass. Externally, bituminous, non-asbestos and fiberglass sheets resemble ordinary roofing, but they are much lighter.
Therefore, they are very often used for independent construction or when it is impossible to strengthen the truss system.
Despite the lightness, the developers have ensured that the material has stable technical properties, which allowed the consumer to bring such a coating into the category of a reliable, durable and sustainable roofing material.
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