For more than 15 years, we have been performing prompt deliveries of building materials and provide our customers with high-quality sheets of wave slate and corrugated asbestos-cement sheets, the size and price per sheet of which fully satisfy the needs of each specific buyer. Excellent technical characteristics of the presented products have been proven by time and successful operation in all weather conditions. The products sold do a good job with the tasks set and have a considerable number of significant advantages:
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 are the sheets with 8 waves.
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 the case. The roof covering has been tested over many years of operation, so all parameters are accurate and measured by specialists.
Slate wave price, which ranges from 180 to 500 rubles per sheet, is 7 wave and 8 wave, color and gray. Here you can find out how much a sheet of slate costs 8 wave price. 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 versions - 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 need other building materials, for example, asbestos pipes, which are needed both for conducting a water supply system 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 an excellent quality of goods sold, delivery on the same day of contact in Moscow and the region, as well as good discounts and an impeccable level of service.
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 structures, wave slate is quite often used, which, due to its large thickness, is highly durable.
Wave slate is easy to use and belongs to budget and durable building materials. The asbestos-cement composition underlies the technical characteristics of slate:
In accordance with the standards of GOST, the standard size of 8-wave slate is 175 × 113 cm. The height and step of the wave are 4 × 15 cm. The standard indicator of the weight of a sheet of 8-wave slate is 26.1 kg.
The overlapped wave has a height of 3.2 cm, in accordance with GOST, deviations upward - 4 mm, in the smaller side - 6 mm are allowed. The standard sheet thickness is 0.58 cm, with the allowed deviations for an increase - 1 mm, and for a decrease - 0.3 mm, allowed according to GOST.
The overlapping edge has a width b1 of 4.3 cm, with a possible deviation of 7 mm. The width of such an edge b2 is 3.7 cm, and there are no deviations according to GOST for this indicator.
Slate marking assumes alphabetic and numerical indicators that inform about the abbreviated designation of the profile of the asbestos-cement slate sheet, the number of waves, thickness, regulatory documents.
The use of colored slate as a roofing material allows you to design the roof in an individual and bright style. The color scheme of the product is presented in 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 to protect the roofing from UV radiation, as well as the negative effects of external factors.
In accordance with the design, colored slate is produced in two types - and wave:
Colored ADs are characterized by:
All colored slate entering the construction markets is made in two ways:
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 ADSL, painted with SV-40 EURO and having the same size - within 250 - 350 per sheet. Installation work depends on the season, as well as the type of roof and is approximately 350-450 rubles / m².
Summing up
A decade ago, wave asbestos-cement slate was the most popular roofing. Later, his position in the market was shaken. Modern analogues of this material have appeared - made of metal, bitumen and even plastic. However, despite this, many consumers, when covering the roof, prefer not the popular ondulin, but the usual wave slate.
This is explained by the fact that most modern materials have not yet passed 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 him even 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 is rectangular asbestos-cement sheets with a wave-like profile. They are made by molding from a plastic solution, consisting of:
As part of the slate, Portland cement appears as a binder, and chrysotile asbestos - as a reinforcing filler. Chrysotile asbestos holds the fragile cement slurry in a predetermined wavy shape and creates a strong structure for the material.
Consider the most important technical characteristics of wave slate, allowing it to be used everywhere, for roofs of premises for various purposes.
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.
The 7th and 8th wave sheets are the most practical. This is due to the small difference between their nominal and usable area. The eight-wave slate has a total area (nominal) of 1.978 m 2, and a useful area of 1.57 m 2. That is, when installing such slate on overlaps (1-2 waves on both sides), a small part of the material is lost. The same can be said for the seven-wave slate. Its nominal area is 1.715 m 2, and its useful area is 1.3362.
The consumption of six-wave slate, when installing the roof, will be slightly higher. The total area of a standard sheet with 6 waves is 1.97 m 2. In this case, the useful area is 1.41 m 2. Thus, the overlaps take up about 20% of the total material.
In addition to slate with 6th, 7th and 8th waves, some factories produce material with 5th waves. However, it should be understood that such material is produced not according to GOST standards, but according to the individual specifications of the plant.
The profile of the slate sheet 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) - its step (in mm).
Wave height is the distance measured between the highest and lowest point of a slate wave. The fraction denoting the type of section indicates the height of an 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 - overlapping. The height of the overlapping and ordinary waves is the same. The height of the overlapped wave is slightly less.
For slate sheets with a cross-section of 40/150, the height of the ordinary and overlapping waves is 40 mm, the height of the overlapping waves is 32 mm. Section 54/200 implies the following values of heights: for ordinary and overlapping waves - 54 mm, for overlapping waves - 45 mm.
The second digit of the fraction (150 mm and 200 mm) - wave step - indicates the distance between the tops of two adjacent waves.
The thickness of the slate is in direct proportion to its size and profile size. Sheets with a 40/150 profile are produced 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 a profile of 54/200 have a thickness of 6 mm or 7.5 mm.
In accordance with the current GOST, the dimensions of sheets of wave slate 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 dimensions. When ordering, it is desirable to clarify this point in order to correctly calculate the amount of material.
Since the installation of slate is performed manually, the weight of an individual sheet is of no small importance when buying. This parameter depends on the number of waves, profile size, material thickness.
Weight of standard slate sheets (made in accordance with GOST):
The usual color of slate is white and gray. However, thanks to the use of coloring agents, the color palette of slate has expanded significantly. Plants produce sheets of red, green, blue, brown, yellow, brick and other colors.
Slate staining can be done in two ways:
Regardless of the dyeing method, the colored finish of the slate increases its frost resistance, reduces water absorption, and protects against damage. On average, the durability of colored slate is 1.5 times higher than its gray counterpart.
The physical and mechanical features of slate make it possible to use it in difficult conditions, on the roofs of residential and industrial buildings.
The main characteristics are:
See the picture below for more details:
To better understand the properties of wave slate, we will combine all its advantages in one list. The positive aspects of this material can be considered:
Of course, slate, despite all its positive qualities, is not an ideal material and has its drawbacks.
Thus, some of the negative properties of slate are corrected through proper use and special care. Other disadvantages are mostly far-fetched, and the third ones do not have a significant effect on the long-term operation of the roof.
Taking into account the indisputable advantages of the material against the background of minor disadvantages, we can conclude: slate, despite the appearance of more modern analogues, continues to be a competitive and promising roofing covering with an extensive scope of use.
Modern roofing materials are beautiful and durable, no one will argue. However, good old slate also does not lie on store shelves. After all, it is very cheap, it is not afraid of fire, and it has good other technical characteristics.
For the roof, only corrugated slate is used, the sheet size of which makes it possible to cover almost any roof with a minimum of waste. The main thing is that the slope of its slope is at least 12 degrees. It is about the sizes 5, 6, 7, 8 of wave slate that will be discussed in this article.
There are four main types of asbestos-cement roofing sheets:
Flat products are used in the construction of partitions and roofs, and wave products are exclusively roofing material. Their production technology and composition are the same, they differ only in the profile in the cross section.
The GOST size of flat slate in millimeters is plates 2500x1200, 3000x1200, 3000x1500, 3600x1200 and 3600x1500. Their typical thickness is 6, 8 and 10 mm. The weight of such an asbestos-cement sheet ranges from 38 to 115 kg.
Size table 6, 7, 8 mm slate and its price:
When calculating the amount of material in question required for the roof, one should focus not on its overall dimensions in the marking, but on workers. Each sheet of the wave sheet is superimposed on the previous one with an overlap offset. Therefore, cutting and displacement will require about 15–20% of the area of the roof to be covered.
The 5th corrugated slate or Euro profile appeared on the market relatively recently, its production has been established only in Ukraine in the city of Balakleya.
With the parameters identical to the 8-wave slate, the Euro profile has a unique sheet geometry. Instead of standard waves, this model implements flat troughs, which improves performance.
The parameters of 5-wave slate are as follows:
Wavy slate is produced in accordance with GOST 30340-95. According to this document, asbestos-cement corrugated sheets must have 6, 7 or 8 waves.
The 7th and 8th wave sheets are the most practical. This is due to the small difference between their nominal and usable area. 8 wave slate has a total area (nominal) of 1.978 m2, and a useful area of 1.57 m2. That is, when installing such slate on overlaps (1-2 waves on both sides), a small part of the material is lost. The same can be said for the 7-wave slate. Its nominal area is 1.715 m2, and its useful area is 1.3362.
The consumption of 6 wave slate, when installing the roof, will be slightly higher. The total area of a standard sheet with 6 waves is 1.97 m2. The useful area is 1.41 m2. Thus, the overlaps take up about 20% of the total material.
In addition to slate with 6th, 7th and 8th waves, some factories produce material with 5th waves. However, it should be understood that such material is produced not according to GOST standards, but according to the individual specifications of the plant.
| Parameters | Nominal size of profile sheets | Limit deviations, mm | Sheet weight, kg | |
|---|---|---|---|---|
| 40/150 | 54/200 | |||
| Length L, mm | 1750 | 1750 | ± 15 | — |
| Width B, mm. | ||||
| 6-wave sheet | — | 1125 | +10, -5 | 26,0 | 35,0 |
| 7th wave sheet | 980 | — | +10, -5 | 23,2 |
| 8 wave sheet | 1130 | — | +10, -5 | 26,1 |
| Thickness t, mm | 5,8 | 6,0; 7,5 | +1,0; -0,3 | — |
| Wave height. | ||||
| private h, mm | 40 | 54 | +4, -3 | |
| overlapping h1, mm | 40 | 54 | +4, -5 | |
| overlapped h2, mm | 32 | 45 | +4, -6 | |
| Overlapping edge width b1, mm | 43 | 60 | ± 7 | |
| Overlapping edge width b2, mm | 37 | 65 | — | |
| Wave step S, mm | 150 | 200 | — | |
We measure the length of the roof, and then divide this number by the width of the slate sheet. Subtracting one tenth for the overlap, we find out how many sheets we need for one row. And the distance from the base of the roof ridge to its lower overhang must be divided by the length of the slate sheet. Here we will add not 10, but 13 percent for the overlap. Round off - here's the number of rows. Just in case, always buy a couple of sheets more than you calculated, since there is a possibility that several sheets will crack during installation.
8-wave asbestos-cement slate is a popular roofing material. It is a tough and durable coating. It serves for a long time and reliably. Currently, colored sheets of various gamuts are produced. This brings variety to the architectural appearance of buildings with such roofs.
Asbestos cement is not considered an entirely environmentally friendly product. It is recommended for outdoor construction work. But even so, the scope of its use is quite wide.
Wave slate is a sheet of asbestos cement that has a wavy profile. It differs in the number of waves located along the width of the sheet. In this case, we are interested in a sheet with eight waves.
The composition and characteristics must meet the requirements of standards or TU, otherwise it will be a defective product, devoid of its basic qualities. During production, certain wave sizes must be maintained - its height and step.
The type of slate profile is regulated. One of them has a wave height of 40 mm, its pitch is 150 mm, it is designated 40/150. The sizes of the second type are equal to 54 and 200, designated 54/200.
They also distinguish between the ordinary type - VO or enhanced - VU. The type determines the area of application of the material. The common type is used in private and low-rise construction. The unified view is used for the roofing of industrial facilities.
What are the advantages of 8-wave slate:
Like any object, slate has disadvantages, namely:
The main component of slate is a natural mineral - asbestos. When added to the composition of the cement mortar, the asbestos fibers are combined. It turns out a very hard material - asbestos cement. Its properties do not change when exposed to moisture, high and low temperatures, and various physical activities.
Chrysotile asbestos is commonly used. The mineral is fluffed, Portland cement and water, various additives are added to it. The working composition is pulp, during its preparation it is necessary to strictly observe the recipe in order to obtain good quality.
There are various slate production plants. At the first stage, the pulp is kneaded. For this, bucket mixers are used. After thorough mixing, the mixture is removed, the liquid is allowed to drain and sent to a sheet-forming machine.
This is where the material is pressed. The duration of the process depends on the type of equipment and pressure. Typically, slate is pressed from 30 to 90 seconds. A continuous strip moves along a special conveyor, a special drum forms strips of a certain thickness.
Rotary shears cut the strips into sheets of the required length. Next, the drums start to work, forming a wave of slate. Their shape and dimensions determine the geometric characteristics of the finished sheets. Finished sheets move along a conveyor and go through a stage of primary curing.
The next stage is the water saturation of the workpieces. In a special pool, they are kept for a certain time and then sent to drying. This takes place in a warehouse with a constant high temperature. This is where the material gains its ultimate strength.
Currently, the production of colored slate is widespread. This increases the wear resistance of the material, gives it new qualities, a beautiful look to slate roofs. For this, phosphate and acrylic dyes are used.
Its main use is roofing. Roofs in individual and low-rise housing construction. Longitudinal ridges serve as stiffeners and increase the bearing capacity of such a coating. This is facilitated by a thick sheet of at least 5 mm.
8-wave slate has convenient sheet dimensions, which makes it easy to install. It should not be used for complex roof structures, as it generates a lot of waste and the economic feasibility of using it will be low. It is also not suitable for roofs with a slope of less than 12 0. Water will not come off such a coating well, its moisture will increase.
Slate is often used for fencing. Especially good are low corrugated slate fences on personal plots. Painted in different colors, they add a special flavor to the architecture of the garden. Another possibility of using slate is the enclosing structures of outbuildings.
Table 1 shows the dimensions of 8-wave slate in accordance with GOST 30340-95. The overlapping wave has a height of 32 mm, the overlapping one - 43 mm. Marking includes alphabetic and numeric values. They indicate the brand of the sheet, the number of waves, thickness.
Table 1. Technical characteristics of slate.
Thanks to the material from which it is made, slate has the following properties:
A good, durable roof is obtained if the base for it is made correctly. The rafter system is used as the base. The cross-sections of the rafters and uprights must correspond to the expected loads.
Eight-wave slate is laid in a scattered manner. Sheets in adjacent rows are shifted, and the longitudinal joints do not coincide, it is not possible to connect 4 elements in one node. To provide this shift, the individual sheets are cut in half lengthwise. They are used as the first extreme for odd rows. Due to this, the displacement occurs.
Docking of sheets is made with an overlap, trying to be located on the leeward side. In the horizontal direction, the stripes overlap by the amount of the wave. In the vertical direction, the overlap of the sheets is required at least 200 mm.
Slate strips are attached to the lathing using special slate nails or screws. They should have an enlarged cap. A rubber gasket is placed under it. Holes for fasteners should be drilled with a drill, and not punched through with nails, so as not to damage the sheets. They are fastened to the crest of the wave, in places of support on the crate, retreating from the edge of the sheet 120 mm.
Fastening of sheets of 8-wave slate in the transverse direction is carried out in 2 and 6 waves. In the longitudinal direction, the sheet rests on the crate in three places, which means that the sheet must be fixed at 6 points. It is better to drill holes for fastening the slate in advance according to the previously applied markings. The hole diameter should be 3 mm larger than the fastener diameter.
Asbestos-cement slate has long been the most demanded roofing coating. With the advent of new materials on the construction market, its consumption has decreased. It is currently being improved. The double-sided protective coating on the asbestos base made the slate environmentally friendly. The production of colored sheets has expanded the scope of use. Undoubtedly, this material remains the cheapest roofing material in terms of performance.
