Slate 8 wave. Sizes of different types of slate. Advantages and disadvantages of slate coating

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Not so long ago, asbestos-cement slate was considered the most used, durable and prestigious material for roofing buildings for various purposes. It was difficult to acquire it, the industry could not keep up with the increase in demand, socialist planning, in principle, could not properly build relations between consumers and producers.

The technical parameters of the slate were prescribed in the provisions of GOST 30340-95. Today, in many developed countries, it is banned for use, the reason is the presence of carcinogenic substances that provoke the development of oncological neoplasms. How things are with a formidable disease in fact, we will consider a little lower.

Currently, industrial companies in Russia for the production of the traditional assortment of wave slate use a completely safe material chrysotile cement, the technical conditions of modern corrugated slate comply with the provisions of GOST 30340-2012.

GOST: Wavy chrysotile cement sheets. Specifications. GOST 30340-2012.

In this article, we will consider the dimensions of the slate of the 8-wave old and new state standard.

In our country, according to various estimates, approximately 50% of all buildings are covered with slate until now. As a material for the manufacture of roofing, sewer pipes and other industrial products, asbestos has been used for more than a hundred years, in the world there are more than 3 thousand items of various materials that contain different types of asbestos.

In 2005, the EU passed a regulation banning the use of asbestos in the manufacture of roofing. The reason - carcinogenic properties adversely affect human health.

According to independent researchers, the actual situation differs significantly from that given by the European Commission during the justification of the decision to ban the use of asbestos. The risks of cancerous growths increase only in people who are directly associated with the production and extraction of ore and do not use personal respiratory protection equipment.

In practice, it has been proven that dust provokes the development of asbestosis (pulmonary fibrosis) only after 10–20 years of continuous work in production without observing elementary safety rules. This is an exclusively professional disease; ordinary users of asbestos-cement slate are not at risk of getting sick. Yes, and at modern enterprises that have high-quality equipment and follow safety precautions, after thorough medical examinations of employees, no pathologies are found in their lungs.

Strengths and weaknesses of 8-wave slate

It is unproductive to consider the operational parameters of roofing materials separately. Each of them has its own characteristics associated with the technology and material of manufacture, these are completely different coatings both in physical and chemical parameters. What is considered a disadvantage for some, is considered an advantage for others. Given this situation, consider the performance properties of eight-wave slate in comparison with other widely used roofing materials, such comparisons will help to find out objective, not advertising characteristics.

Operating parameter	Comparative short description
	Among all roofing coverings, only rolled ones for flat roofs are cheaper. But they are used only for a limited number of building projects, most individual residential buildings have pitched roofs. It must be understood that during the cost comparison, the average price categories of roofing are meant. Each type has a wide range of prices from the cheapest economy class to very expensive premium goods. For example, high-quality flexible shingles can cost more than some types of shingles, although at average prices the latter is much more expensive.
	Asbestos is used for the manufacture of thermal insulation in various electrical appliances, withstands heating up to + 1000C °, does not support open fire. Previously recommended by fire authorities for fire barriers. Accordingly, the slate does not burn. But this does not mean that after the fire the sheets will remain intact. Cement is used in the manufacture, during heating it cracks, the wavy slate collapses and is unsuitable for reuse. Among roofing materials, all materials containing bitumen burn. This should be remembered and not paid attention to the advertising statements of some manufacturers that soft tiles perfectly resist fire.
	This indicator plays a role during the choice of a roof lightning protection method. If for metal roofing materials the presence of a lightning rod is prescribed in the requirements of building codes and regulations, then for slate there is no such requirement. When dry, it is a 100% insulator; when wet, slate conducts electricity a little.
	According to this indicator, wave slate loses to all roofing materials, except for some types of piece tiles. One square meter of a sheet of 8-wave slate weighs more than 30 kg, which is quite a lot for truss systems. The weight of the roof covering must be taken into account during the design of roofs, in most cases, the data on the increase in the weight of the building are also taken into account when calculating the foundations.
	Slate is a fragile material, does not withstand shock loads, after a hail of medium size, the roof has to be completely changed. In this parameter, it is inferior to all currently used roofing.
	It is difficult to work with slate, it is poorly cut, cracks easily, and requires increased care during installation. In addition, 8-wave slate is very heavy, installation requires great physical effort, which increases the risk of injury to roofers. In terms of manufacturability, slate is in last place among other materials.
	On average, slate roofs can be used for about fifty years, of course, if there is no mechanical damage due to hail. Duration of operation is quite a competitor even among the most modern and very expensive roofing.

As for design characteristics, there can be no objective data here, each consumer makes an independent decision, taking into account his personal tastes and preferences. Moreover, today's manufacturers have learned how to make wave slate with different color schemes.

Dimensions of 8-wave slate according to the provisions of GOST 30340-95

To date, these standards are considered valid, although in practice they are used quite rarely. As mentioned above, most domestic manufacturers have switched to safer raw materials and manufacture goods according to new specifications. We will consider the data of this state standard only due to the fact that you can still find asbestos-cement slate made according to the old standards, and you need to know its technical characteristics.

The shape and main parameters of the old slate

Two types of section are allowed, the difference in height and step of the wave. Slate is indicated by the numbers 40/150 and 54/200. Here the numerator indicates the height of the ridge, and the denominator indicates its step. At the same time, the nominal width of a sheet with 8 ridges is 1130mm, the limiting difference in thickness is not more than a millimeter in the plus side and ≤ 0.3mm in the minus side.

The dimensions of the additional elements of the roof are also regulated: a ridge overlapping and overlapping part, a simplified ridge partly overlapping and overlapping shaped part. The tray and isosceles corner piece has its own standards.

Prices for various types of slate

General requirements for technical parameters of 8-wave asbestos cement slate

Sheets and tray elements must be rectangular in plan, allowable deviation in length and width ≤ 15 mm, deviation from straightness of slate edges ≤ 10 mm. According to modern standards, these are very large tolerance fields, now the tolerances of roofing materials are measured in tenths of a millimeter.

Slate sheets have fairly large tolerances for dimensional deviations

On the surface and edges of the coating, the presence of chips, holes and through cracks is prohibited. Planes can be painted or have a natural shade.

Single burrs ≤ 100mm long and individual chips ≤ 15mm in the transverse direction are allowed. The total length of the gaps on one edge cannot exceed 60 mm. At the same time, the total number of small deviations on one wave slate cannot exceed three, and the number of low-quality sheets cannot exceed 30% of the supplied roofing batch. The data of physical and mechanical values ​​are normalized:

• ultimate bending strength 1.6–1.7 MPa;
• density 1.6–1.7 g/cm3;
• volumetric water resistance ≥ 24 hours;
• frost resistance more than 50 cycles with residual strength ≥ 90%.

When buying, consumers should pay attention to compliance with labeling standards. Responsible and well-known manufacturers always indicate their contact details and full information about the product. On the front surface of the slate, the trademark of the company or its name, the batch number of the product, the thickness and type of the profile of the wave slate are written. At the same time, all letters and numbers should be clearly visible and exclude the risks of challenging the content of the marking in the event of any quality claims.

Parameters of 8-wave slate according to the provisions of GOST 30340-2012

These are relatively new chrysotile cement materials, in our country today they are used for the manufacture of roofs and shaped parts used to cover structures for various purposes. Chrysotile is a long and well-known mineral of the silicate class, has a fibrous structure, is not afraid of aggressive chemical compounds, does not dissolve in water, and is chemically inert. Recognized as the safest type of asbestos for health.

When cement is added to it, they get - a material for the manufacture of modern corrugated slate sheets.

According to the normative act on the geometry of the cross section, two types of coatings are distinguished: 40/150 and 51/177, the edges are symmetrical and asymmetric.

Name of controlled sizes of 8-wave slate	Slate parameters 40/150mm	Fields of permissible deviations of slate 40/150 mm	Slate parameters 51/177mm	Fields of permissible deviations of slate 51/177 mm
Slate length in millimeters	1750	±15	625 – 5000	±10
Slate width in millimeters	1130	+10	Not produced	Not produced
Sheet thickness including tolerances in millimeters	4,7	±0.20 1,0…-0,3	5,20	±0.30

The standard regulates the dimensions of the remaining sheets, depending on the number of waves. Additionally, the height and width of the edge of an ordinary, overlapping and overlapping wave are controlled. This is done to minimize the size of the cracks on the roof.

The presence of high-tech and competitive modern roofing materials only slightly pushed the slate coating from the leading position. For the installation of the roof of industrial buildings, wave slate is often used, which, due to its large thickness, is highly durable.

Main technical characteristics

Wave slate is easy to use and belongs to budget and durable building materials. The asbestos-cement composition underlies the technical characteristics of slate:

• ultimate strength in bending is 16 MPa;

• residual strength is 90% or more;

• density is 1.6 g/cm³;

• the impact strength index is 1.7 kJ / m²;

• frost resistance within 25 cycles;

• the moment of resistance is 36.6 W;

• sheet manufacturability in accordance with the ratio of radius to thickness is equal to 5.5 PT;

Roof sheet parameters

In accordance with GOST standards, the standard size of an 8-wave slate is 175 × 113 cm. The height and step of the wave are 4 × 15 cm. The standard weight of a slate sheet for 8 waves is 26.1 kg.

The overlapped wave has a height of 3.2 cm, in accordance with GOST, deviations are allowed upwards - 4 mm, downwards - 6 mm. The standard sheet thickness is 0.58 cm, with deviations allowed according to GOST for an increase of 1 mm, and for a decrease of 0.3 mm.

The overlapping edge has a width b1 of 4.3 cm, with a tolerance of 7 mm. The width of such an edge b2 is 3.7 cm, and deviations according to GOST for this indicator are not provided.

Slate marking involves letter and numeric indicators that inform about the abbreviated designation of the profile of the asbestos-cement slate sheet, the number of waves, thickness, and regulatory documents.

Colored asbestos slate

The use of colored slate as a roofing material allows you to decorate the roof in an individual and bright style. The color scheme of the product is represented by gray, brown-red, green, blue and cherry tones.

The color of the slate is given by acrylic-based pigments, which, in addition to the decorative function, help protect the roofing from UV radiation, as well as the negative impact of external factors.

In accordance with the design, colored slate is produced in two types - and wave:

• Flat colored slate, due to the presence of chrysolite fibers in the composition, it has sufficiently high strength indicators and is used to create fences or temporary buildings.

• Wavy colored slate has increased rigidity. ACLs are produced in different sizes and number of waves. The most popular is the color 8 wave slate.

Color ACLs are characterized by:

• ease and speed of installation work;

• good physical indicators, including a high level of heat and noise insulation, no overheating of the roof in the summer, a low degree of susceptibility to temperature fluctuations and the maximum degree of fire resistance.

All colored slate entering the construction markets is made in two ways:

• ACL with resistant paints using a special technology, which consists in applying resistant acrylic paint to mounted sheets using an airbrush. The durability of such a coating corresponds to the service life of the roof itself.

• a method patented by the Balakliya slate plant, which consists in adding a coloring pigment to a mixture of asbestos cement before the hardening stage. The result of such know-how is the acquisition of an attractive appearance by the roof and the uniformity of color at the place of ACL sawing.

The cost of a roof of 8 wave slate

The average price of a standard unpainted eight-wave slate, depending on the region, is about 150 - 300 rubles. for one sheet, and the price of ACL, painted with SV-40 EURO and having the same size - within 250 - 350 per sheet. Laying works depend on the season, as well as the type of roof, and amount to approximately 350-450 rubles / m².

Summing up

• Due to its optimal dimensions, 8-wave slate can be successfully used not only for roofing in the private sector, but also for roofing over large areas.

• The use of special water-dispersion type paints in the production of ACL not only allows you to get a beautiful roof coating, but also significantly extends the life of the roofing.

• The price of slate is very affordable, and independent installation work can significantly reduce the cost of installing a high-quality and modern roof.

Bauff offers to purchase wave slate for roofing from manufacturers at an affordable price. Certified slate is shaped like rectangular sheets pierced with 8 deep waves. The finished slate has a thickness of 5.2-5.8 mm and fully complies with internal state standards and international quality standards. Delivery of wave slate in Moscow and the region is carried out by the seller's transport within 24 hours from the date of order confirmation. Transportation of sheets to other regions is carried out by Bauff's partner transport companies.

Advantages of wave slate

Roof profiled slate has the following advantages:

1. Resistant to sudden changes in temperature and prolonged negative mercury column. Successfully used in the northern regions.
2. No fear of high humidity and precipitation (snow, rain).
3. Does not fade or deteriorate under the influence of direct sunlight, is not afraid of ultraviolet radiation.
4. Ease of installation work. The slate is easy to install thanks to the wave connection.
5. Size versatility. Profiled sheets have a standard size and 98% of usable area, which makes it possible to mount roof structures of any complexity with their help.
6. Strength, reliability and durability. Properly laid slate will last at least 70 years!
7. The favorable price of profile products is 5-10% cheaper than the cost of other roofing building materials.

Scopes of wave slate

Wave multi-colored sheets are widely used in civil, industrial and technical construction. Roofs are covered with such slate, wave products are used for laying technical premises. Slate is used to mount various protective structures and find other uses for profiled slate.

Order and purchase wholesale batches of wave roofing products from the manufacturer with delivery on favorable terms at a convenient time on the company's website or by contact phone numbers.

For more than 15 years, we have been performing prompt deliveries of building materials and providing customers with high-quality wave slate sheets and corrugated asbestos-cement sheets, the dimensions and price per sheet of which fully meet the needs of each specific customer. The excellent technical characteristics of the presented products have been tested by time and successful operation in all weather conditions. Implemented products do a good job with the tasks and have a considerable number of significant advantages:

• ease of installation;
• price per sheet, variety of sizes;
• fire resistance and excellent electrical insulating properties;
• ease of machining;
• low thermal conductivity, which allows the material to retain heat in the winter season and not overheat under the summer sun;
• affordable cost of wave slate;
• environmental friendliness - products do not emit toxic substances when heated;
• low noise level during precipitation;
• long period of operation.

Characteristics

Asbestos-cement slate is produced in accordance with GOST 30340-95. Following this approved standard, all asbestos cement sheets have 6,7,8 waves, depending on the choice of the consumer. Sheets with 8 waves are considered the most useful.
Profile dimensions are also standardized: there are only two types of section - 40/150 and 54/200. At first glance, it may seem that the consumer is very limited in the choice of wave slate, but this is not so. The roofing has been tested for many years of operation, so all parameters are accurate and measured by experts.

Types of wave slate

Slate wave price, which ranges from 180 to 500 rubles per sheet, is 7 wave and 8 wave, colored and gray. Here you can find out how much a sheet of slate 8 wave price costs. In our store, mainly 8-wave slate is presented, which is the most convenient and practical in construction. You can buy 8-wave slate from us in two options - it is 5.2 mm thick and 5.8 mm thick. In addition, we have a colored wave slate in 4 different colors: yellow, red, blue and green

Undoubtedly, during construction, you may also need other building materials, such as asbestos pipes, which are needed both for plumbing and for removing excess moisture from the roof.

When planning to buy wave slate in Moscow, you can contact our company without any hesitation. Being engaged in the supply of building materials from trusted domestic manufacturers, SPETSTORG guarantees each consumer the excellent quality of the goods sold, delivery on the same day in Moscow and the region, as well as good discounts and an impeccable level of service.

Colored

Eight-wave slate* is a standard roofing sheet that has been used in construction in our country for more than 60 years. It has symmetrical edges requiring overlapping sheets on the base SP 17.13330.2011 Roofs. Updated edition of SNiP II-26-76. The wave height of such a profile is 40 mm and the wave pitch is 150 mm. The standard thickness is - 4.7; 5.2; 5.8 mm.

Lightweight eight-wave slate sheet 4.7 thick; 5.2 mm lighter than 5.8 mm thick sheet, which reduces the cost of slate and simplifies installation. At the same time, slate sheets with a reduced thickness retain all the key properties of this product, and also surpass other roofing materials in strength.

Eight-wave sheets are made on modern equipment, which provides a smooth surface and accurate geometric dimensions.

* Profile 40/150 (CB)

Specifications and dimensions of 8-wave slate

Range

The 8 wave slate is available in regular gray unpainted, as well as in the standard colors of indigo (blue), green, chocolate, orange and red. Painted in the factory, slate is more resistant to the negative effects of the weather. The coating without loss of its properties lasts up to 6-7 years.

Application

A thicker sheet is used in regions with high snow and wind loads. A thinner sheet should be used in temperate zones.
Sheets of eight-wave slate are mainly used in residential low-rise construction to cover the roofs of private and apartment buildings, cottages, townhouses, non-residential buildings (arbors, garages, etc.).