Slate is the most common roofing material, a leader in its field of application for several decades.

The name “slate” is not entirely correct; real slate is a natural layered mineral.

The exact designation of the roofing material sounds like, but the name “slate” has stuck for a long time and there is no point in changing it.

Two main types of material are available- flat and wave. Flat is used for facing work or for the construction of partitions for auxiliary and utility rooms.

Only wave fiber is used as roof covering, it is stronger and stronger than a flat one, due to the stiffening ribs created by the waves.

The long-term widespread use of slate is a consequence of high reliability, durability and ease of installation. The relatively recent appearance on the market of many alternative roofing coverings from synthetic materials, metal or bitumen, could not radically change the situation, since the traditional, time-tested approach to materials prevails among builders.

Wave slate is a roofing material in the form of wavy sheets of rectangular shape. To produce slate, a plastic molding composition is used, the components of which are:

1. Portland cement. The grades used are M300-500, the percentage of material present is 80-90%.
2. Chrysotile asbestos. (10-20%).
3. Water.

The roles of the components are distributed as follows: Portland cement acts as a connecting link, and chrysotile asbestos is a reinforcing element. After the mass hardens, a strong and hard sheet material is obtained.

Traditionally produced light gray natural color material, but recently coating samples made with additives of dyes have appeared on the market to give a certain color, which significantly improved the aesthetic perception of the material.

Installation is carried out by attaching overlapping sheets using slate nails to the rafter system. Ridges and connecting elements that make up the roof covering are also produced by industry, but often builders do not know about this and use metal elements, which worsens appearance roofs.

Wave slate sheet sizes (7 and 8 waves)

According to GOST, there are only two standard sizes:

1. 40/150 — wave height 40 mm, wave length — 150 mm.
2. 54/200 — wave height 54 mm, wave length — 200 mm.

The dimensions of 8-wave slate also vary depending on the type. By profile type, sheets are divided:

Unified

Marked with the abbreviation UV.

Dimensions according to GOST

Slate 8 wave sheet size:

• Sheet width - 1130 mm;
• Length - 1750 mm;

Slate size 7 wave:

• Sheet width - 980 mm;
• Length - 1750 mm;
• Sheet thickness is 5.8 mm for profile 40/150 and 6-7.5 mm for profile 54/200.

Slate size 6 wave:

• Sheet width - 1125 mm;
• Length - 1750 mm;
• Sheet thickness is 5.8 mm for profile 40/150 and 6-7.5 mm for profile 54/200.

Wave slate size

Ordinary

Denoted as VO.

• Sheets 680 mm wide;
• length - 1120 mm;
• sheet thickness 5.8 mm for profile 40/150 and 6-7.5 for profile 54/200.

The size of 8 wave slate can vary within small limits.

Reinforced

Profile marked VU, intended for industrial facilities, has an increased thickness - 8 mm, sheet width 1000 mm, length - up to 2800 mm.

Limit permissible deviations The dimensions are ±15 mm in length and +10 and -5 mm in width.

Number of waves

The number of waves is already determined by the name - 7-wave and 8-wave.

In individual construction, a 7-wave sheet is most often used, since it is lighter and easier to lift to the installation site manually.

At the same time, his usable area less than 8-wave, since the amount of overlap for both brands is the same and the difference of one wave cannot be compensated for by anything.

However, a study of demand shows the predominant use of the 7-wave option.

How much does a slate roof weigh?

Sheet weight - important indicator on which the load on the rafter system depends. So, let's find out how much a sheet of 8-wave and 7-wave slate weighs.

The weight of the 40/150 profile sheet is:

• 23.2 kg— weight of slate 7 wave;
• 26.1 kg— slate weight 8 wave.

For profile 54/200, the weight is 26 and 35 kg, respectively.

The weight of 8 wave slate 1 m2 is approximately 10.41 kilograms.

It is noted that the weight of slate is greater than that of its competitors among roofing materials, which creates certain requirements to the device rafter system. Wind and snow load , with a large roof area, the weight of water absorbed by the coating during rain may play a role.

Weight wavy slate

Usable area

The sheets are installed with an overlap, 1 or less often 2 waves are overlapped. In this case, the useful area of ​​the sheet is reduced by the amount of overlap.

• For a 7-wave sheet, the usable area is 1,336 sq. m.;
• Useful area of ​​8 wave slate - 1.57 sq.m.

The dimensions are indicated with an overlap of 1 wave, which is most often used in construction. Sometimes in some places it may be tempting to lay the sheet end-to-end to save material.

CAREFULLY!

It is impossible to lay sheets end-to-end, as leaks will occur at all joints.

Saving one or two sheets will result in water entering the room.

Overlap width

Advantages and disadvantages of slate covering

Wave slate has a number of undeniable advantages:

• Long service life. On average, the coating retains its quality for about 40 years or more, depending on the conditions of use. It is noted that even under the most unfavorable factors, the coating lasts at least 10 years.
• Easy to install. No work required highly qualified, it is enough to have general idea about styling techniques.
• Allows partial renovation or replacing individual sheets that have become unusable.
• Material strength promotes safety during installation - the slate covering can easily support the weight of a person and allows walking on the covering.
• Does not accumulate electric charge , absolutely safe in terms of fire.
• Much cheaper other roofing materials.
• Relatively light weight coating allows you to do without construction lifting equipment during installation.

Advantages of coverage

It is impossible not to mention negative qualities slate. These include:

• Fragility of the material. Slate is not plastic and does not allow any deformation.
• Moisture absorption capacity shortens the service life and causes the formation of fungus and mold; over time, moss appears that must be cleaned off. This deficiency can be neutralized by coloring.
• The content of asbestos as a component of the material is a significant health hazard.

PLEASE NOTE!

Asbestos is a strong carcinogen, which caused a reduction in its use in industry.

This is the main reason for the displacement of slate from the market, although there are no definite medical statistics on this matter. There are data for enterprises showing the percentage of morbidity among workers, but there is no statistical information for residents of slate-covered houses.

Nevertheless, the danger exists and must be taken into account. Installation work should be done using individual means respiratory protection.

The shortcomings of the material can be neutralized without any special difficulties, you just need to be aware of them and take appropriate measures to prevent possible incidents. At the same time, the obvious advantages, tested and confirmed by many years of practice, convincingly speak in favor of slate as an advantageous and reliable roofing covering.

Useful video

Dimensions slate roofing you can watch the video:

Conclusion

The use of wave slate roofing is a completely justified choice, determined by high operational properties material combined with the lowest price. The coating justifies the cost of purchase and installation with many years of service, which can be significantly increased with periodic maintenance or painting of the roof.

The material does not create excessive load on the rafter system; it is available and widespread everywhere. Unified dimensions, if necessary, allow the use of sheets from different manufacturers.

Do you know what the weight of 8 wave slate is? But this information is very important for carrying out calculations, for example, of the rafter system during the construction of buildings. As you guessed, our article will focus on roofing material such as slate, its types, technical characteristics oh and in particular about his weight.

The word "" came to us from the German language, where previously this was the name for roofing slate tiles obtained by splitting special rocks.

When equipping modern roofs, slate is practically not used, while the “name” is firmly fixed on asbestos-cement roofing materials wavy shape, as well as behind sheets of alternative materials of similar shape, and is therefore now quite common.

Characteristics of asbestos-cement wave slate

Such slate is one of the most used materials in roofing, and has been for decades. And this is not surprising, since it is practical, inexpensive and very convenient to install.

Parameters of reinforced profile slate sheet

Wave slate – weight 1 sq.m. the roofing weight of which is 10-14 kg (depending on the thickness of the product), is made from a mixture consisting of asbestos, Portland cement and water.

At the same time, thin asbestos fibers, which are evenly distributed in Portland cement, act as a reinforcing mesh, significantly increasing the impact strength and strength of the material.

Produce following types modifications of wave slate:

• With a normal profile.
• With reinforced profile.
• With a unified profile.

Such sheets differ from each other in their sizes: the smallest of them are slate sheets with an ordinary profile, the largest are with a reinforced profile.

As for the profile itself, there are two types of sheets: 40/150 and 54/200, with the first number indicating the height of the wave, and the second the pitch of the slate wave, indicated in mm.

According to GOST standards, the dimensions of corrugated slate are determined as follows:

• their length is 1750 mm;
• The width, depending on the number of sheet waves, can be:

1. 980 mm for slate in 8 waves;
2. 1125 mm for slate in 6 waves;
3. 1130 mm for slate in 7 waves.

• the thickness for a 40/150 profile should be 5.8 mm, for a 54/200 profile - 6 mm or 7.5 mm.
• The ordinary wave of the overlapping sheet, depending on the type of slate sheet profile, is produced with a height of 40 or 54 mm, while the overlapping one is 32 or 45 mm, respectively.

If you take a standard 8-wave slate sheet, its weight, depending on the thickness, will be from 23 to 26 kg.

Regarding mechanical characteristics of this material, then they are largely determined by factors such as:

• asbestos content;
• uniform placement in cement;
• grinding fineness and others.

Advice! Remember that if you choose asbestos-cement slate for your roofing, the weight of the sheet should serve as a guide for choosing elements of the rafter system of one thickness or another.

In order to improve durability, as well as decorative properties, slate is painted with phosphate or silicate paints using various types of pigments.

Often, wave asbestos-cement slate is painted blue, red-brown, brick-red, yellow and other colors. Paint applied to slate protects the material from destruction, reduces its water-absorbing properties and increases frost resistance.

At the same time, the durability of slate sheets coated with protective coating increases by 1.5-2 times.

Characteristics of flat asbestos-cement slate

Painted slate has great durability and attractive appearance

Compared to wave slate, flat roofing sheet has somewhat similar properties, but still has some differences.

Such sheets are made in two ways: with and without pressing.

At the same time the weight flat slate produced using pressing will be significantly higher than without it, however, the technical characteristics of the pressed sheet will be significantly higher.

For example, pressed slate can withstand at least 50 freezing cycles, while an unpressed sheet is almost 2 times less.

And even after the specified number of freezing cycles, the sheets remain quite strong, losing only about 10% in reliability from the original indicator.

The rather high strength parameters of flat slate are impressive: depending on the manufacturer, the sheet can withstand a bending force of 20-50 MPa, and a compressive force of 90-130 MPa.

However, the main advantage of flat finishing material serves the versatility of its use.

Flat slate - the weight that allows the construction of a roofing base without additional reinforcing elements, is applicable not only as a roofing covering.

It can serve as both external and internal cladding of buildings, as partitions between rooms, and is in great demand in the agricultural sector and livestock farming.

The versatility of using flat slate is due not least to the high practicality and low cost of the material.

Flat slate is resistant to aggressive environments, can be in contact with open soil for decades, is fireproof, and can be processed relatively well.

If we take into account the weight, flat slate is a completely acceptable material in this regard, both for covering the roof and for use in other areas.

Characteristics of wave bitumen slate

Flat slate: the weight of the covering allows the use of a roof truss system without additional reinforcement

Wave bitumen euro slate or simply ondulin is a more modern product from a technical point of view than asbestos-cement slate sheet.

These types of coatings are completely different from each other, and the only things that remain in common between them are, perhaps, their shape, relatively low cost and purpose.

How much does slate weigh using bitumen? With a sheet area of ​​approximately 2 sq.m. its weight is only approximately 6.5 kg, which is simply phenomenal by roofing standards.

Most types of bitumen corrugated sheets are produced as follows:

• The fiber-bitumen mass, which includes bitumen, synthetic and plant fibers, dyes and plasticizers, is pressed at high temperatures. In this case, the final density of the material is achieved quite low, which largely determines the low weight of the slate sheet.
• Pressing is performed in several stages in a certain sequence, which results in a multilayer sheet structure, which gives the material high strength and resistance to mechanical stress. In this mixture, bitumen serves as a waterproofing agent, while organic matter gives rigidity to the sheets.
• Impregnation with bitumen is also carried out in vacuum chambers in several stages, after which the sheets are painted.

Euroslate has many advantages, including:

• Flexibility and ease of processing even. The material can be cut quite easily with a hand hacksaw or jigsaw.
• Durability, which varies from 10 to 30 years among different manufacturers.

Advice! With all the advantages of wave bitumen slate (ondulin), it is still not recommended for use in areas with a hot summer climate, since under significant thermal loads the bitumen softens slightly, due to which the sheet temporarily loses its declared rigidity and, accordingly, overall strength.

According to the painting method, bitumen sheets are divided into 2 types - glossy and matte. Matte sheets are painted acrylic paint, while they feel rough to the touch.

Glossy sheets look more beautiful and brighter due to the addition of silicone to the paint, which provides this same gloss and shine. Sheets with a glossy finish are more expensive and are less able to retain snow and dirt.

Besides the above the above options slate, corrugated roofing sheets made from plastic (PVC) have recently appeared on the market. They are currently used mainly for covering gazebos, terraces, all kinds of canopies and greenhouses.

Plastic slate is quite lightweight, easy to process and install, and has many other advantages. However, this is a new product for the construction market, so few people yet decide to build more serious roofing structures from it.

So, we found out what slate is, learned about some of its varieties, found out why and how much a sheet of slate of one type or another weighs.

Let's hope that this information will subsequently help you more clearly and quickly decide on the choice of slate for covering the roof of your own home.

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When working with a roofing material such as slate, it is very important to know how much a sheet of slate weighs, since this indicator is essential for calculating the building’s rafter system. Therefore, it is very important to understand everything technical features slate and in particular what is affected by the weight of the slate sheet.

The word “slate” takes its roots in German, where this term previously referred to roofing slate tiles extracted from special rocks by splitting.

On modern roofs such slate is practically not used, although its name remains tied to a special wavy or flat material from asbestos cement. That is why slate today is a standard and widespread material.

Technical characteristics of wave slate made of asbestos cement

The weight of 1 m2 of wave slate is 10 – 14 kilograms (it all depends on the thickness of the material). Its composition is based on a mixture that includes asbestos, water and Portland cement.

When understanding how much slate weighs, you need to take into account that the thin asbestos fibers that make up its composition and are evenly distributed in Portland cement play the role of a kind of protective mesh, thereby performing protective functions and increasing the strength of the material.

Wave slate has the following modifications:

• wave slate having an ordinary profile;
• wave slate with a reinforced profile;
• wave slate having a unified profile.

The difference between these sheets is in size: the smallest slate sheets have an ordinary profile, the largest ones have a reinforced profile. Naturally, they are different.

If we focus on the characteristics of the profile, it is worth noting that it comes in two categories: 40/150 and 54/200. The first number corresponds to the height of the slate wave, and the second – to its pitch. Indicators are indicated in millimeters.

According to GOST standards, the dimensions of wave slate must be determined as follows:

Specific gravity sheet slate in 8 waves depends on the thickness of the material and usually ranges from 23 to 26 kilograms.

Regarding mechanical properties slate, then the following factors have a decisive influence on them:

• presence of asbestos in the material;
• uniform distribution inside the cement;
• grinding grain size, etc.

It is important to remember that if the roofing material is asbestos-cement slate, then the fundamental factor for choosing certain parts of the rafter system with required thickness is the mass of slate.

In addition, a process such as slate painting will add durability, reliability and beauty to the roof. This is done using phosphate or silicate paints, to which various pigments are added.

The most common slate colors are red-brown, blue, yellow, brick red and others. The paint applied to the material can protect the material from premature destruction and increases its resistance to low temperatures and reduces its water absorption properties. The durability of slate when painted increases approximately 1.5 - 2 times.

Technical characteristics of flat slate made of asbestos cement

The main advantage of flat slate is the versatility of its application.

Slate flat sheet weight, which has a direct impact on the design of the roof base, has much more wide application than exclusively roofing coating.

Such widespread use of this material is undoubtedly associated with its high properties, practicality and relative cheapness.

Aggressive environments are also not a serious obstacle to the normal operation of slate; moreover, it is able to remain close to the soil for many years. The material is fireproof and easy to process.

If we take into account the weight of one sheet of slate, then this indicator is quite acceptable so that both the roofing and other objects used for slate are installed with high quality.

Detailed Descriptions flat slate with all its technical characteristics with photos and videos of its installation can be viewed on our website.

Technical characteristics of wave slate using bitumen

The similarity of these two coatings lies only in the similarity of shape and relatively low price, while the remaining characteristics are radically different.

If we talk about the mass of the material, then the weight of 1 m2 of slate is approximately 3.2 kilograms, respectively, if the sheet area is 2 m2, then the weight will be approximately 6.5 kilograms. When compared to other roofing products, this result is exceptional.

How to lay slate, see details in the video:

Of course, one cannot fail to mention the entire process of creating corrugated bitumen sheets of slate, or ondulin:

• the mixture from which the material is made consists of bitumen, vegetable and synthetic fibers, plasticizers and dyes. She is exposed special treatment– pressing performed at high temperature(read also: " ").
  
  The final density of the material is quite low, which explains the low weight of the slate sheet;
• strict adherence to the sequence of all stages of pressing makes it possible to create a multilayer sheet, which will certainly give the material additional strength and resistance to external influences.
  
  Bitumen in in this case plays the role of a waterproofing agent, and organic elements provide the necessary rigidity;
• is carried out in several stages and bitumen impregnation carried out in special vacuum chambers. After this, the sheets are painted in the desired color.

The main advantages of ondulin:

1. The material is environmentally friendly. It does not pose any danger to humans or nature; moreover, after its service life has expired, it can be subjected to secondary processing.
2. Ondulin is resistant to chemical influences, fungi and bacteria cannot grow on it, and it will not decompose organically either.
3. Comfort and ease of installation of the material. Thanks to the low weight of the ondulin sheet, all work on its installation can be done independently, without the usual help expensive services professional roofers.
4. Due to its flexibility and ease, the material can be cut using conventional hand hacksaw or jigsaw.
5. Ondulin is durable; depending on the manufacturer, its service life can vary from 10 to 30 years.

Speaking about methods of painting ondulin sheets, we can distinguish 2 categories: matte and glossy. Matte sheets are processed using acrylic, and they are rough to the touch.

Glossy sheets are more effective, since silicone is added to the paint composition, which adds shine and the necessary gloss. Such sheets are more expensive, but their resistance to snow and dirt is noticeably lower than that of matte sheets.

At the beginning of construction, purchasing building materials in a store or market, knowledgeable people always wonder how much the sheet of slate they are planning to purchase weighs. The inhabitants shrug their shoulders in bewilderment - what difference does it make, how much it weighs, the main thing is that the material is of high quality. Of course, and this is important, but the mass of the block may be needed when calculating the rafter system during the construction of buildings and structures.

It turns out that weight is one of the important technical characteristics of slate slabs, including if we're talking about about the wave sheet. These and other properties different types We suggest discussing slate right now.

Characteristics of wave products

Roofs on a private house cannot be built without corrugated slate, and this is not surprising, because thanks to the large size of the blocks, the material is easy to install, quite practical to use and relatively inexpensive. The main thing is to be careful when transporting products, they can crack and break during delivery, even in disassembled form.

The weight of a wave slate sheet depends on the quality of the mass, which is prepared from asbestos, Portland cement and liquid. Asbestos fibers must be thin; this provides a reinforcement function that has a beneficial effect on the impact strength and strength of the finished fabric.

Wave slate is manufactured in the following designs:

• with a regular profile;
• with reinforced;
• with a unified profile.

The difference between slate is that it can be different sizes. The regular profile is the smallest, the reinforced profile is characterized by large slate sheets.

Now a few words about the profile, the blocks of which are found in 2 varieties:

• 40/150 mm – 8-wave, weighing 26.1 kg, 7-wave, weighing 23.2 kg;
• 54/200 mm – 5 kg with a thickness of 7.5 mm, 26 kg with a thickness of 6 mm.

What do the indicators indicated through the fraction mean? The first determines the height of the wave-like shape, while the second allows you to navigate the size of the slate wave.

Like any other building material, wave slate is subject to standardization, all this is specified in GOST, according to which the size of the wave sheet varies within the following limits:

• length reaches 1750 mm;
• the width ranges from 980 mm, if we are talking about 8 waves, to 1130 mm, if the slate consists of 7 waves.

Modern manufacturers today are allowed to produce slate in accordance with their own specifications, developed and accepted at factories by design engineers with specialized education. Therefore, do not be surprised if the indicated weight according to GOST differs greatly from the weight of the material that you see in the store.

To prevent slate from deteriorating less, it should be coated special means, this must be done in any case along the edges and seams. The composition may contain pigment; if desired, it is time to choose a transparent coating. Houses with roofs painted in brown and red shades look very stylish. The paint will improve the frost resistance characteristics and increase the service life of the roof by 2 times, at least that’s what experienced builders say.

What is good about wave slate?

We have already written briefly about why consumers prefer wave slate. During the application process, additional advantages are also noted:

• the sheets do not burn, so they cannot cause a fire in extreme heat;
• perfectly tolerate sudden temperature changes and harsh climatic conditions in winter;
• the blocks have good strength and strength, so they can withstand large snow accumulations and lumps;
• block the noise of rain and hail.

Many consumers believe that the high weight of wave slate is a bad indicator, but in fact its quality depends entirely on other factors:

• pay attention to the labeling and manufacturer; before purchasing, it is better to read reviews on the Internet;
• percentage presence of asbestos and fine grain, good level grinding is the key to making wave slate last longer;
• the uniform layer of asbestos placement can only be traced during the production cycle;
• compliance with technology is also a matter of responsibility and cleanliness of the manufacturer, so be guided by manufacturers who are always well-known, and be wary of newcomers to the construction market.

What is wavy slate material afraid of? Point loads, so if you hit the canvas sharply, it will most likely crack. This often happens during the installation process, so be extremely careful; it is recommended to build special bridges to move from one area to another.

Features of flat asbestos-cement slate

If you need to equip a building envelope, it is better to choose a flat sheet of slate products. You've probably seen high fences consisting of several blocks. At the production stage flat devices can be processed by pressing, although you can do without it.

One of the oldest roofing coverings is slate. Despite the fact that today the market is oversaturated with modern roofing materials, slate continues to be used to cover garages and other technical structures, not least due to its low price.

Slate characteristics

Roofing slate is asbestos cement sheets. Their main advantages, besides price, are diversity overall dimensions, allowing you to perform the roof with a minimum of waste, non-flammability, water resistance. Service life - 40 years, with good care longer.

Today's technologies make it possible to produce not only nondescript gray sheets, but also colored ones: blue, green, brown, red. The main disadvantage is the heavy weight. The technology for laying the roof is simple, but the weight of the sheets complicates the process.

There is flat and profile slate. The profile is divided by the number of waves. GOST standards describe the range of standard sizes of asbestos cement sheets:

Dimensions of flat slate: length from two and a half to three and a half meters, width 1.2 or 1.5 with a thickness of 8-20 millimeters;

Five-wave. Slate dimensions: 5.8 mm thickness, length 1.98 meters, wave pitch 26.3 cm. With such dimensions, the sheet covers only 1.6 squares, so the material is not widely used;

Six-wave. Width 112 centimeters, size 54/200 with thickness 0.6 and 0.75. The heaviest type, used primarily for covering the roofs of industrial facilities;

Semivolnovoy is popular in private development. Standard sizes slate 1.78 meters by 98 cm, slate thickness 5.8 mm;

Eight waves. 5.2 and 5.8, 1.75 by 1.13 meters.

How much does a slate sheet of popular brands weigh:

Seven-wave, depending on the size and thickness, the weight of the slate sheet is 18.5-23 kilograms, 9.5-12 - a square meter;

Eight-wave – 21-35 kg, weight of 1 m2 of slate 10.5-18 square.

Price

The cost of a slate sheet depends on the brand of material, thickness, and color. Least popular gray, it costs less: about 400 rubles for an eight-wave sheet, from 350 for seven waves.
Colored (green, red, etc.) sheets cost from 500 rubles for both seven and eight waves.