Slate 8 wave. Wave slate. Colored asbestos slate

Colored

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

Eight-wave sheets are produced at modern equipment, which provides a smooth surface and precise geometric dimensions.

* Profile 40/150 (NE)

Technical characteristics and dimensions of 8-wave slate

Assortment

8-wave slate is produced as usual gray in an unpainted version, and in standard colors: indigo (blue), green, chocolate, orange and red. Factory painted slate is more resistant to negative impacts weather. The coating lasts up to 6-7 years without losing its properties.

Application

Thicker sheets are used in regions with high snow and wind loads. Thinner sheets should be used in temperate climate zones.
Sheets of eight-wave slate are mainly used in residential low-rise construction for covering private and apartment buildings, cottages, townhouses, non-residential buildings (gazebos, garages, etc.).

Warning: Use of undefined constant WPLANG - assumed "WPLANG" (this will throw an Error in a future version of PHP) in /var/www/krysha-expert..php on line 2580

Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/krysha-expert..php on line 1802

Not so long ago, it was considered the most used, durable and prestigious material for roofing buildings for various purposes. asbestos cement slate. It was difficult to acquire, 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 slate were prescribed in the provisions of GOST 30340-95. Today in many developed countries it is prohibited for use, the reason is the presence of carcinogenic substances that provoke the development of oncological tumors. We will look at how things really stand with this terrible disease a little below.

Currently, industrial companies in Russia use completely safe material chrysotile cement to produce the traditional range of corrugated slate; the technical conditions of modern corrugated slate meet the provisions of GOST 30340-2012.

GOST: Chrysotile cement corrugated sheets. Technical conditions. GOST 30340-2012.

In this article we will look at the sizes of 8-wave slate, old and new. state standard.

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

In 2005, the EU passed a regulation banning the use of asbestos in the manufacture of roofing materials. The reason is that carcinogenic properties negatively affect human health.

According to independent researchers, the actual situation differs significantly from that cited by the European Commission when justifying the decision to ban the use of asbestos. The risk of developing cancer increases only in people directly involved in the production and extraction of ore and who do not use the means personal protection respiratory organs.

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

Strengths and weaknesses of 8-wave slate

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

Operational Parameter	Comparative Brief Description
	Among all roofing coverings, only rolled ones are cheaper. flat roofs. But they are used only for a limited number of building projects; most individual residential buildings have pitched roofs. You need to understand that when comparing costs, we mean average price categories roofing coverings. Each type has a wide range of prices from the cheapest economy class to very expensive premium products. For example, high-quality flexible bitumen shingles may cost more than some types of piece tiles, although at average prices the latter is significantly more expensive.
	Asbestos is used to make thermal insulation in various electrical appliances, withstands heating up to +1000C°, does not support open fire. Previously recommended by fire authorities for the construction of fire barriers. Accordingly, the slate does not burn. But this does not mean that after a fire the sheets will remain intact. Cement is used in production; when heated, it cracks, corrugated slate collapses and reuse unsuitable. Among roofing coverings, all materials containing bitumen burn. You should remember this and not pay attention to the advertising statements of some manufacturers that soft tiles excellent resistance to fire.
	This indicator plays a role when choosing a method for protecting roofs from lightning. If for metal roofing materials the presence of a lightning rod is specified in the requirements building codes and rules, then for slate there is no such requirement. When dry, it is a 100% insulator; when wet, slate conducts electricity slightly.
	According to this indicator, wave slate is inferior to all roofing materials, except for some types of piece tiles. One square meter a sheet of 8-wave slate weighs more than 30 kg, which is quite a lot for rafter systems. The weight of the roofing covering must be taken into account during the design of roofs; in most cases, data on the increase in the weight of the building are taken into account when calculating the foundations.
	Slate is a fragile material and cannot withstand shock loads; after a medium-sized hail, the roof has to be completely replaced. In this parameter, it is inferior to all currently used roofing coverings.
	Working with slate is difficult; it cuts poorly, 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 ranks last among other materials.
	On average slate roofs can be used for about fifty years, of course, if not mechanical damage because of the hail. The service life is quite competitive even among the most modern and very expensive roofing coverings.

As for design characteristics, there cannot be objective data; each consumer makes an independent decision taking into account his personal tastes and preferences. Moreover, today's manufacturers have learned to produce wave slate with various color schemes.

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

Today, these standards are considered valid, although in practice they are used quite rarely. As mentioned above, most domestic producers switched to safer raw materials and manufactured goods according to new technical 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 old standards, and you need to know it technical specifications.

Shape and main parameters of old slate

Two types of cross-section are allowed, the difference in height and wave pitch. Slate is designated by the numbers 40/150 and 54/200. Here the numerator indicates the height of the ridge, and the denominator its pitch. At the same time, the nominal width of the sheet with 8 ridges is 1130 mm, the maximum variation in thickness is no more than a millimeter on the positive side and ≤ 0.3 mm on the negative side.

The dimensions of additional roofing elements are also regulated: ridge overlapping and overlapping part, simplified ridge part partially overlapping and overlapping shaped part. The tray and isosceles corner parts have their own standards.

Prices for different types of slate

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

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

U slate sheets fairly large tolerances for dimensional deviations

The surface and edges of the coating must not have chips, holes or through cracks. The planes can be painted or have a natural shade.

Single scuffs ≤ 100 mm long and individual nicks ≤ 15 mm in the transverse direction are allowed. The total length of chips on one edge cannot exceed 60 mm. In this case, the total number of small deviations on one wave slate cannot exceed three, and the number of low-quality sheets cannot be more than 30% of the supplied roofing lot. The data of physical and mechanical values ​​are normalized:

• 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 purchasing, consumers should pay attention to compliance with labeling standards. Responsible and famous manufacturers always indicate your contact information and full information about the product. On the front surface of the slate it is written trademark company or its name, product batch number, thickness and type of corrugated slate profile. At the same time, all letters and numbers must be clearly visible and eliminate the risk of challenging the contents 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 well-known mineral of the silicate class for a long time, has a fibrous structure, is not afraid of the effects of aggressive chemical compounds, insoluble in water, chemically inert. Recognized as the safest type of asbestos for health.

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

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

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

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

Bauff offers to purchase wave slate for roofing from manufacturers at affordable price. Certified slate has the shape of rectangular sheets, pierced by 8 deep waves. The finished slate has a thickness of 5.2-5.8 mm and fully complies with internal GOSTs and international standards quality. Delivery of wave slate throughout 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 partner transport companies.

Advantages of wave slate

Roofing profiled slate has the following advantages:

1. Resistance to sudden changes temperature and prolonged negative mercury levels. It is successfully used in the northern regions.
2. No fear high humidity air and atmospheric precipitation(snow, rain).
3. Does not fade or deteriorate under direct influence sun rays, not afraid of ultraviolet radiation.
4. Ease of implementation installation work. Slate is easy to install thanks to the wave connection.
5. Versatility of sizes. Profiled sheets have standard size and 98% of usable area, which allows installation with their help roofing structures of any complexity.
6. Strength, reliability and durability. Properly installed 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.

Areas of application of wave slate

Wave multi-colored sheets received wide application in civil, industrial and technical construction. Roofs are covered with such slate, and wave products are used for laying out premises. technical purpose. Various fencing structures are mounted with slate and other uses are found for profiled slate.

Order and purchase wholesale quantities 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.

Just a decade ago, corrugated asbestos-cement slate was the most popular roofing covering. Later, his position in the market weakened. Modern analogues of this material have appeared - made of metal, bitumen and even plastic. However, despite this, when covering roofs, many consumers prefer not the popular ondulin, but the usual wave slate.

This is explained by the fact that the majority modern materials have not yet stood the test of time, they poured into our markets only 10-15 years ago. Wave slate is a completely different matter.

It is known that for it 50 years of operation in our conditions is far from the limit. In addition to durability, slate has many other advantages: low price, practicality, ease of installation.

Wave slate– these are asbestos cement sheets rectangular shape having a wavy profile. They are made by molding from a plastic solution consisting of:

• Portland cement grades M300-500 (80-90%);
• chrysotile asbestos (10-20%);
• water.

In slate, Portland cement acts as a binder, and chrysotile asbestos acts as a reinforcing filler. Chrysotile asbestos holds fragile cement mortar in a predetermined wavy shape and creates a strong structure of the material.

Characteristics of wave slate

Let's consider the most important technical characteristics of wave slate, which allow it to be used everywhere, for roofs of premises for various purposes.

Number of waves

Wave slate is produced in accordance with GOST 30340-95. According to this document, asbestos-cement corrugated sheets must have 6,7 or 8 waves.

Sheets with 7 and 8 waves are the most practical. This is due to the small difference between their nominal and usable area. The eight-wave slate has a total (nominal) area of ​​1.978 m2, and a useful area of ​​1.57 m2. That is, when installing such slate over overlaps (1-2 waves on both sides), a small part of the material is lost. The same can be said about seven-wave slate. Its nominal area is 1.715 m2, and its useful area is 1.3362.

The consumption of six-wave slate during roof installation will be slightly higher. Total area standard sheet with 6 waves - 1.97 m 2. At the same time usable area– 1.41 m2. Thus, the overlaps take up about 20% of the total material.

In addition to slate with 6, 7 and 8 waves, some factories produce material with 5 waves. However, it should be understood that such material is produced not according to GOST standards, but according to individual plant specifications.

Profile dimensions (waves)

The type of slate sheet profile depends on the height and pitch of the wave. According to GOST, sheets are produced with two types of sections - 40/150 and 54/200. In this case, the first digit of the fraction (numerator) indicates the height of the wave, and the second (denominator) indicates its pitch (in mm).

Wave height is the distance measured between the highest and lowest point of a slate wave. The fraction indicating the type of section indicates the height of the ordinary wave (40 mm and 54 mm). There are also extreme waves.

On one side of the sheet the wave is called overlapping, and on the other - overlapped. The height of the overlapping and ordinary waves is the same. The height of the overlapped wave is somewhat less.

For slate sheets with a section of 40/150, the height of the row and overlapping waves is 40 mm, the height of the overlapping waves is 32 mm. Section 54/200 implies the following height values: for ordinary and overlapping waves - 54 mm, for overlapping waves - 45 mm.

The second digit of the fraction (150 mm and 200 mm) - the wave pitch - indicates the distance between the tops of two adjacent waves.

Sheet thickness

The thickness of the slate is directly dependent on its size and profile size. Sheets with profile 40/150 are manufactured with a thickness of 5.8 mm.

A larger cross-section will require an increase in thickness, otherwise the material will not be able to support its own weight and will crumble during installation or at the initial stage of operation. Therefore, sheets with profile 54/200 have a thickness of 6 mm or 7.5 mm.

Sheet sizes

According to current GOST, the dimensions of wave slate sheets are regulated as follows: length - 1750 mm, width - 1125 mm (slate with 6 waves), 980 mm (slate with 7 waves), 1130 mm (slate with 8 waves).

At the same time, many manufacturers produce slate with non-standard sizes. When ordering, it is advisable to clarify this point in order to correctly calculate the amount of material.

Sheet weight

Since slate installation is done manually, weight is of no small importance when purchasing. separate sheet. This parameter depends on the number of waves, profile size, and material thickness.

Weight standard sheets slate (manufactured according to GOST):

• Type 40/150, 7 waves (dimensions 1750x1130x5.8 mm) - 23.2 kg;
• Type 40/150, 8 waves (dimensions 1750x1130x5.8 mm) - 26.1 kg;
• Type 54/200, 8 waves (dimensions 1750x1130x6 mm) – 26 kg;
• Type 54/200, 8 waves (dimensions 1750x1130x7.5 mm) – 35 kg.

Coating color

The usual color of slate is white-gray. However, thanks to the use of coloring agents, color palette slate has expanded significantly. Factories produce sheets of red, green, blue, brown, yellow, brick and other colors.

Slate painting can be done in two ways:

1. Coloring pigments are introduced into the liquid asbestos mass at the slate production stage. The color is as durable as possible, as it penetrates the entire thickness of the material. However, coloring of slate in the mass is carried out only according to the manufacturer’s own specifications and does not meet the requirements of the current GOST.
2. Ready-made slate sheets are painted with pigmented compounds (acrylic, alkyd and polymer paints). Similar decoration is practiced by factories producing colored slate according to GOST. Paints can also be used to cover slate yourself - to improve it decorative qualities, updates appearance and extending service life.

Regardless of the dyeing method, colored slate finishing increases its frost resistance, reduces water absorption, and protects it from destruction. On average, the durability of colored slate, compared to its gray counterpart, is 1.5 times higher.

Physical and mechanical characteristics

The physical and mechanical properties of slate allow it to be used in difficult conditions, on the roofs of residential and industrial buildings.

The main characteristics are:

• Concentrated stamping load - no less than 150 kgf (for 40/150 - for any thickness and 54/200 - for a thickness of 6 mm) or no less than 200 kgf (type 54/200, thickness 7.7 mm). In other words, slate can easily support the weight of objects of 150 or 200 kg. You can move freely on a slate roof during installation, during operation and repair. Significant snow loads she is also not afraid.
• Density – observed at a level of at least 1.6 g/cm3 – for type 40/150; not less than 1.65 g/cm3 – for type 54/200 with a thickness of 6 mm; not less than 1.7 g/cm3 – for type 54/200 with a thickness of 7.5 mm. The higher the density, the greater the strength of the slate and its weight.
• Bending strength – 16 mPa – for type 40/150; 16.5 mPa – for type 54/200 with a thickness of 6 mm; 19 mPa – for type 54/200 with a thickness of 7.5 mm.
• Residual strength – maintained at 90%. This is the strength level of destroyed slate.
• Waterproof - 24 hours.
• Frost resistance - 25 cycles - for slate type 54/200 with a thickness of 6 mm and type 40/150, 50 cycles - for slate type 54/200 with a thickness of 7.5 mm. These numbers indicate the number of freezing and thawing cycles that do not lead to visible destruction of the slate.

See the picture below for more details:

Advantages and disadvantages of wave slate

To better understand the properties of wave slate, let’s combine all its advantages in one list. Positive aspects this material can be considered:

• Durability– on average, operation slate roofing lasts 30-50 years. Coloring further increases this period.
• Fire resistance– slate does not burn and does not spread flame, therefore according to GOST 30244 it is characterized as a non-combustible material.
• Weather resistant. Slate does not rot, does not deteriorate under the influence of precipitation, and can withstand significant wind loads.
• Low thermal conductivity. Slate retains heat well in a room during the cold season, so when installing a roof you can save on some of the insulating layers. At the same time, in summer, slate, on the contrary, insulates the room from intense solar radiation. It heats up little, unlike, for example, metal tiles or corrugated sheets.
• Sound-absorbing properties. Asbestos cement sheets tend to absorb sound, so the sound of falling rain or hail will be little heard in a house with a slate roof.
• Decorative. The choice of colored wave slate allows you to get a roof with high decorative properties. However, gray traditional slate also fits well into the architecture of modern cities and towns.
• Easy installation. A roofer who covers a roof with slate does not necessarily have to be highly qualified. The scheme and technology for laying corrugated sheets is very simple and does not require specialized skills and tools. You can cut slate with almost anything cutting tool used in everyday life. For example, a hacksaw, a grinder, a circular saw.
• The use of sparse lathing. Slate is a hard material that does not bend or change shape. That's why roofing sheathing it can be mounted under it with enough big step, optimally – 0.75 m.
• Low cost. The cost of constructing a roof made of slate is usually 2-3 times lower than that of other materials. Low price slate sheets, together with the low cost of their installation, allows you to acquire quality roofing without significant damage to the family budget.

Of course, slate, despite all its positive qualities, – the material is not ideal and has its disadvantages.

Thus, some negative properties of slate are corrected using correct operation and special care. Other disadvantages are largely far-fetched, and still others do not have a significant impact on the long-term operation of the roof.

Taking into account the undeniable advantages of the material against the background of minor disadvantages, we can conclude: slate, despite the emergence of more modern analogues, continues to remain a competitive and promising roofing covering with a wide range of uses.

For more than 15 years, we have been providing prompt supplies of building materials and providing customers with high-quality corrugated slate sheets and corrugated asbestos-cement sheets, the sizes and price per sheet of which fully satisfy 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. The products sold cope well with the assigned 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 winter season and do not overheat under the summer sun;
• affordable cost of wave slate;
• environmentally friendly - the 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. The most useful sheets are those with 8 waves.
The profile dimensions are also standardized: there are only two types of sections - 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 the case. Roof covering has been tested for many years of operation, so all parameters are accurate and measured by specialists.

Types of wave slate

The price of wave slate, which ranges from 180 to 500 rubles per sheet, comes in 7 wave and 8 wave, colored and gray. Here you can find out how much an 8 wave slate sheet costs. Our store presents mainly 8-wave slate, which is the most convenient and practical in construction. From us you can buy 8-wave slate in two versions - 5.2 mm thick and 5.8 mm thick. In addition, we offer colored wave slate in 4 different colors: yellow, red, blue and green

There is no doubt that during construction you may need other building materials, for example asbestos pipes, which are needed both for plumbing and for drainage. excess moisture from the roof.

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