Do you know the difference between gypsum plasterboard, gypsum plasterboard and SML.
The article will help you decide on the choice of primary finishing material for walls and identify the differences between such popular materials as.
SML (glass magnesite sheet.
GKL (plasterboard.
GVL (gypsum fiber sheet.
Today, Chinese manufacturers offer another new sheet coating product - glass-magnesite sheet. The consumer is only at the stage of studying an alternative option for plasterboard sheets. His wait-and-see attitude is dictated by ignorance of the true qualities of the new product. In Asian countries, SML is a leader among similar finishing materials in construction work.
Glass-magnesite sheet (GML) is a new product on the construction market.
LSU consists of finely crushed wood chips, magnesium chloride and oxide, and composite binders. All components are reinforced with fiberglass mesh. Glass and magnesium composition are the basis of LSU.
Properties of glass magnesite sheet.
LSU is characterized by such an attractive property as increased resistance to combustion. No other similar material has such a high fire resistance coefficient. Also, glass-magnesite sheets are perfect for finishing wet rooms (basement, bath) as they are famous for their high moisture resistance.
This is what a glass magnesite sheet looks like.
They retain their shape and their original properties at such humidity levels that other materials begin to delaminate and swell. Thanks to these important qualities of LSU, experts recommend glass-magnesite sheets not only for interior, but also for facade decoration.
During experimental testing, SML showed the highest result. After being in water for 100 days (!), the glass-magnesite sheet did not change at all. Therefore, this finishing material is recommended for finishing swimming pools, public and private saunas and basements. Low susceptibility to fungal formations (mold) only confirms the use of LSU for finishing wet rooms.
Glass-magnesite sheets are perfect for people who are inclined towards environmentally friendly products. LSU does not contain and does not emit harmful substances when heated, such as resins, phenols, adhesives and asbestos.
Using LSU in building a house.
The combination of flexibility, strength and lightness is an important characteristic of LSU. Thanks to the glass-woven reinforcing mesh, the glass-magnesite sheet can be bent over a large radius without mechanical damage. The plasticity of LSU is important when finishing uneven surfaces. Therefore, the new material is a worthy competitor to its fragile brothers: drywall and gypsum fiber. And glass-reinforced sheets are 40% lighter than plasterboard sheets. Structures made from SML are light, almost weightless, allowing you to create stepped ceilings with complex elements.
Video review of LSU.
This useful video will help you understand why glass-magnesite sheets are better than plasterboard, fiber cement boards and cement shavings. A new generation material made from fiberglass, magnesite and sawdust provides the highest performance characteristics.
SML is used for the construction of interior partitions, for multi-level ceiling and wall structures. Building elements made from SML do not require priming. Partitions and walls are ready for painting, wallpapering, and tiling. Different sheet densities are intended for different needs. For example, for facade finishing, Premium class material is used with a density higher than 0.95 grams per cubic centimeter, and 1st grade sheets have a lower density and are intended for interior construction.
Installing LSU is more labor-intensive than installing drywall. If you tighten a glass-magnesite sheet with screws or staples, this will lead to cutting of the reinforcing fiberglass layer. As a result, the material will lose the ability to be held in place by a screw or bracket.
Glass-magnesite plates (sheets) are easy to saw, cut, plane and glue. Installation work is carried out using a pneumatic gun and an electric drill. When cutting the material, no harmful dust is released.
As you can see, you can cut a sheet of LSU with the most ordinary knife without any effort.
The service life of the plates reaches 15 years. During this time, manufacturers guarantee complete preservation of the original appearance. The material does not crumble and is not susceptible to other destructive effects. Insects and mold do not grow in the slabs. When working with LSU, you must use gloves. This will help avoid irritation caused by fiberglass particles.
In Russia, the leading place in the construction industry is occupied by plasterboard sheets. This material is excellent for finishing work. With its help, you can level the ceiling and walls, divide the room with a wall, and bring design ideas to life.
Plasterboard sheet.
The inner layer of the sheet consists of 93% gypsum. The outer layer is made of cardboard, making up 6% of the total volume and 1% is organic matter.
Properties of gypsum boards.
Drywall has excellent soundproofing properties. Some lovers of silence cover completely straight walls and ceilings with plasterboard sheets just because a noisy tenant lives next door. Fire resistance is another positive characteristic of gypsum plasterboard. Drywall has such an important quality as complete drying. The plasterboard coating both absorbs moisture and releases it without subsequent damage to the appearance.
Plasterboard sheets.
Builders are especially attracted by the ease of installation (dismantling) of plasterboard sheets. Constructions made from this material allow you to implement design ideas and hide all communications in partitions and under the cladding. Built-in lighting, niches, arches, columns and other decorative elements can easily be made using gypsum boards. All imperfections made during construction are easily hidden with plasterboard sheets.
An example of home construction of plasterboard walls with your own hands.
Drywall is a fragile material. Often breaks during transportation. GKL also easily absorbs moisture, so it is completely unsuitable for wet rooms, or special plasterboard sheets (GKLV) are used. Another significant drawback is that over time, the gypsum in the slabs breaks down and turns into dust. Therefore, allergy sufferers and asthmatics should take into account this property of gypsum and take appropriate measures: for example, reliably insulate drywall with special decorative coatings.
Plasterboard structures produce the sound effect of emptiness - you just need to knock on them a little. To avoid such trouble, professionals prefer to use stone wool, which is placed in partitions and columns. This measure solves this problem. But nothing can hide the fragility of plaster and cardboard.
Drywall is not suitable for finishing industrial premises, since large crowds of people lead to a colossal load on the walls. Thin walls cannot hold out for long under such pressure. Another thing is lightweight partitions and structures for living quarters. But in residential buildings, another need often arises: to hang or attach something to the wall.
The main thing is to choose the right fastening material and act according to the technology. It is necessary to take into account weight, distance between fasteners and other parameters. Heavy objects are secured to the wall using bolts that go through both the drywall and the main wall. Only then can reliable fastening be ensured.
Video on installation of plasterboard structures.
As this video shows with no small amount of humor, before you begin installing plasterboard sheets, you must carefully prepare and treat all surfaces. In addition, it is also important what kind of tools are used.
Types of plasterboard sheets.
Drywall is divided into:
fire-resistant (GKLO.
moisture resistant (GKLV.
combined type.
decorative type.
You can always choose the material that best suits the room.
GKLO is a fire-resistant plasterboard sheet coated with a fire-resistant compound. Gypsum board is intended for rooms with an increased risk of fire. The difficult flammability of the material can save lives in a critical situation.
An example of GKLO from the world famous German company Knauf.
GKLV is a plasterboard sheet with increased moisture resistance, containing antibacterial components and inhibiting the formation of mold. This drywall is equipped with special additives that prevent high moisture absorption.
Using gypsum boards for the attic ceiling.
Decorative leaf.
Decorative plasterboard sheet is an innovation in the construction market. The board made of cardboard and gypsum has a decorative layer. The sheet coating can imitate wood, marble or other characteristic pattern, similar to natural and artificial origin.
Sheet of decorative plasterboard.
Installation of decorative plasterboard requires special care. The seams are fitted end to end and sealed with decorative elements. Scrupulous study of the rules for installing exclusive plasterboard boards guarantees quality for many years. Decorated plasterboard sheets are resistant to discolouration for 10 years. During this period, the panels can withstand chemical and mechanical stress without loss of appearance (with proper handling.
KGP PS is a combined plasterboard sheet with insulation. The expanded polystyrene layer guarantees additional insulation to the main walls. KGP PS is used for internal and external insulation.
Plasterboard sheet with insulation.
Gypsum fiber sheets.
GVL is a gypsum fiber sheet reinforced with cellulose fiber and has greater strength than plasterboard. This is a hard material that absorbs noise well.
Gypsum fiber sheets are increasingly popular in construction.
Resistant to burning. During operation, a small percentage of dust is released (unlike drywall). Moisture-resistant GVL is intended for wet rooms.
Anyone involved in home construction or renovation is familiar with these abbreviations - GKL, GVL, SML. Wall materials used today in construction and installation work have different characteristics. The purpose of this article is to help you decide which finishing material is easier to work with, and which material is best to choose for which rooms.
SML, or glass-magnesium sheet.
Contains in its structure fine wood shavings, magnesium chloride and oxide, composite binders reinforced with fiberglass.
Currently, LSU occupies a leading position in the used building materials in Korea, China, Taiwan and other countries of the Asian continent.
One of the main qualities of LSU can be called its non-flammability. The main feature of glass magnesite is its remarkable fire resistance effect. At the moment, there is not a single sheet product in construction that could compete with SML in terms of fire safety. Another important property that glass-magnesium sheet has is excellent moisture resistance and the ability to not lose shape when wet. When finishing facades, the important quality of the material is that in a humid environment it does not deform or lose its shape. This remarkable quality is exactly what the glass-magnesium sheet has.
Rooms with high humidity are another area of application for this material, for example, finishing the basement. LSU does not swell and does not lose its properties, even when in water. It has been proven through experiments that LSU placed in water for one hundred days does not change its appearance. It also does not get damp in the air. Thus, SML is quite a suitable finishing material for the interior decoration of saunas and swimming pools.
In addition to resistance to humidity, glass-magnesium sheet is also characterized by excellent resistance to mold. This material, having antiseptic properties, prevents the appearance of fungal formations and mold on the walls. This quality of LSU is of particular importance for the use of the material in bathrooms, pools and basements.
To the list of positive qualities of glass-magnesium sheet, we can add that LSU is an environmentally friendly material and does not include harmful components, such as phenol, asbestos, adhesives, resins, and the like; even when heated, it does not emit toxic substances. According to the specified characteristics, glass-magnesium sheet surpasses similar properties of related building materials. The production of sheet material using this technology gives them such qualities as strength and at the same time flexibility. These characteristics of LSU are better than those of similar finishing materials. Magnesium glass sheets, unlike gypsum fiber or plasterboard sheets, due to their glass-woven reinforcing mesh, bend with a radius of curvature of up to three meters. When transporting and installing, the material does not break on uneven surfaces and is not subject to destruction under mechanical stress.
The LSU sheet is 40% lighter than a plasterboard sheet, which makes the installed structure quite light. Thanks to this property of LSU, fewer workers can be involved in finishing work on the facade. It is also important that at a reasonable price, finishing facades using LSU will reduce the cost of facade finishing work, due to the fact that this material does not require final finishing, since it is white in color. Magnesium glass sheets used for exterior finishing work only become even whiter under the influence of external factors such as precipitation and sunlight.
Experts recognize frost-resistant material that can withstand thirty-five cycles during testing; this figure for LSU is more than fifty cycles.
The installation of interior partitions is an important part of repair and construction work, allowing you to conveniently arrange the living space of an apartment, cottage or private house. SML is simply ideal for installation of internal building structures such as walls and ceilings. Partitions and walls mounted from SML are suitable for painting, applying decorative plaster, gluing tiles or wallpaper immediately, without prior priming or surface preparation.
Compared to plasterboard, the installation technology of LSU is more labor-intensive. This is because staples or screws cannot be used to fasten the LSU, since this breaks the outer layer of the reinforcing fiberglass and it does not hold well in this place.
LSU is easy to saw, cut, plane and glue. Any shape can be cut out of LSU and veneer or other similar finishing materials can be glued onto it. LSU shows itself in a favorable light not only in terms of its wide range of applications, but also has a lower price, with an excellent set of consumer and operational characteristics. Moreover, the service life of this finishing material is fifteen years. The use of LSU for indoor installation is justified, in addition to its environmental friendliness, by the fact that during its operation LSU is not a source of dust, unlike gypsum boards and gypsum fiber boards. It is highly resistant to insects.
Important! Since the glass-magnesium sheet is reinforced with fiberglass, it is recommended to wear gloves when handling it to avoid skin irritation.
GKL, or plasterboard sheet.
To this day, it remains the leader in dry finishing technologies in our country. GKL is a building composite material. Due to its hygienic qualities, being a hygienically clean material that does not contain harmful substances, plasterboard is excellent for finishing living rooms. It is not flammable and has good soundproofing qualities. A distinctive quality of gypsum plasterboard is that when there is excess moisture in the room, gypsum plasterboard collects it, and when it is “dry” it releases it.
Drywall is now used for installing partitions, finishing and leveling walls and ceilings. The structure of drywall is a gypsum inner layer (about 93%) and an outer cardboard layer (about 6%), as well as various organic components (1%). Experts note the ease of installation and dismantling of this finishing material. A positive property of plasterboard partitions is that you can hide all communications behind the partition sheathing. Plasterboard structures allow you to bring various creative ideas to life, creating such room design elements as arches, columns, niches, and built-in lighting.
If there are any shortcomings in the room, they can be easily corrected with the help of gypsum boards. Drywall is easy to use because it can be easily prepared for painting, wallpapering, or replacing part of the structure. Holes, seams, chips and other irregularities in drywall are sealed with putty. Reinforcing tape is placed under the putty if the seams are very deep.
Nowadays, the majority of Russian residents pay attention to the environmental safety of their apartments. Experts believe that drywall is mostly harmless. A disadvantage of plasterboard, which may appear over time, is that the gypsum included in the drywall turns into dust, which can negatively affect the respiratory process. Fragility, the second disadvantage of drywall; If transporting or unloading is not careful enough, the gypsum board may break. Although, it is precisely this quality that makes it easy to make holes of the desired size and shape in a plasterboard sheet. Another disadvantage of drywall is its susceptibility to destruction under the influence of moisture. Because of this, partitions made of ordinary plasterboard cannot be installed in rooms with high humidity. In such rooms it is best to install partitions made of moisture-resistant gypsum plasterboard.
When hitting a gypsum board partition, a characteristic sound of emptiness is heard. To avoid this unpleasant effect, experts advise filling the voids with sound-absorbing material - such as stone wool, or fixing the gypsum board in two layers. It is important to carry out installation carefully following the technology. You can meet people who are concerned about the seeming insufficient strength of drywall. In fact, gypsum plasterboard is unacceptable for installation in rooms with a large number of people - in these rooms there is too much load on the walls, but for use in residential premises, gypsum board is quite acceptable. Some also believe that it is difficult to attach, especially heavy objects, to a gypsum board wall. It is very important here that the correct selection of modern fastening materials and correctly performed installation, in this case, everything you need can be attached to the drywall. Due to the gradual release of gypsum dust, the period of use of gypsum boards is not very long.
Stores selling building materials offer the following types of drywall:
Standard;
Moisture resistant:
Structural, used for the installation and repair of complex structures;
With improved resistance to various impacts;
Laminated.
Varieties of gypsum boards.
GKLV – moisture-resistant plasterboard. GCR contains special additives that prevent the appearance of mold, fungi and reduce the amount of moisture absorbed by drywall.
This type of drywall is used for finishing work in rooms with high humidity (saunas, bathrooms, kitchens).
GKLO – fire-resistant plasterboard. Coated with a composition that prevents cardboard from burning. This material is very suitable for finishing utility rooms, industrial and non-residential buildings.
Decorative (laminated) gypsum plasterboard is a modern material that allows you to quite quickly solve the issue of quick installation of internal partitions and walls, when cladding walls and finishing rooms. It does not require additional decorative finishing, because its decorative top layer imitates wood or marble. This allows you to significantly reduce the cost of finishing materials, as well as the construction and repair time. Retains its original color for more than ten years, has increased resistance to mechanical damage, washes well and withstands chemical and mechanical influences.
And another type of plasterboard sheet is a combined gypsum board, or GKP PS, the structure of which contains a layer of effective insulation. Such a combined plasterboard panel is structurally a sheet of plasterboard with an expanded polystyrene board glued to it on the back side. This type of plasterboard is mainly used for insulating the external walls of buildings and for interior finishing work.
GVL - gypsum fiber sheet.
Today, manufacturers also offer building materials with characteristics similar to gypsum plasterboard, but superior to it in some qualities. One of these materials is gypsum fiber sheet - GVL.
It consists of cellulose fiber reinforced gypsum. Therefore, the compressive strength of gypsum plasterboard is significantly higher than the strength of gypsum plasterboard. When processed, gypsum fiber sheets are more rigid, have lower bending strength and are less flexible in interior decoration for indoor plastics, compared to gypsum plasterboard. The gypsum fiber sheet contains in its design only one material that can be burned, this is surface cardboard. But since there is no air between the inner layer of plaster and the outer layer of cardboard, the cardboard chars but does not burn. The ability of gypsum fiber board for sound insulation depends on the number, thickness of sheets and the depth of the frame space. The plasterboard sheet has sufficient strength, but emits a small amount of dust during long-term use. For finishing residential premises, standard GVL is mainly used; for rooms with high humidity, there is moisture-resistant GVL.
Gypsum fiber sheet is used to install a prefabricated floor base; it is also used to cover wooden structures in order to increase their fire safety. Moisture-resistant gypsum fiber board is impregnated with a special hydrophobic composition for use in finishing work in wet rooms. Gypsum fiber sheet has the ability, depending on the air humidity in the room, to absorb moisture from the air or release it. Made using GVL, the design of prefabricated flooring bases can then be used for any modern coatings (ceramic tiles, linoleum, parquet). Gypsum fiber sheet is used for finishing the walls and floors of sanitary facilities, for preparing the base for floors, installing partitions and finishing walls in utility rooms; as well as in attics and attics. A feature of the surface of a gypsum fiber sheet is that it requires preparation before final finishing. Before applying oil paint, a paper layer is applied to the surface. GVL also needs to be primed before wallpapering.
Today, the properties of gypsum plasterboard and gypsum fiber board, as well as these building materials themselves, are well known to the Russian consumer. A newer material, glass-magnesium sheet (GML), is of more interest. It is moisture resistant, fireproof, quite durable, environmentally friendly, and does not require preliminary preparation before final finishing with wallpaper or paints. But, unfortunately, at the same time, it has a more labor-intensive installation technology. But despite this, LSU is a rather interesting building material and is worth paying attention to.
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Dear gentlemen builders. I would like to know the detailed process of CORRECTLY leveling walls (reinforced concrete), with a composition such as Knauf... I’m a novice in this matter, but I want to make my daughter’s bedroom beautiful, but I don’t have a lot of money to pay professionals for the work, and there’s no guarantee that I’ll get caught good pros... So I want to know what, how, and how much is worth a pound. Thanks in advance for your advice. The walls will be leveled for further painting with Sherwin Williams paint.
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Hello, brothers in repair! I haven’t written anything here for a long time, and in general I started to come in rarely, it’s all somehow too much time: either drinking, or partying, and now a new “attack” has attacked me. But knowing that, despite everything, you stubbornly do not forget me, I decided not to be a pig and tell you about my new hobby. I’ll start from afar: I have worked almost my entire adult life as an electronics engineer, moreover, as an engineer-developer of electronic and electrical devices of the widest class and purpose, and at the same time purely in the defense industry. It is clear that the scope of my amateur radio interests was limited only by my laziness, there were simply no restrictions on radio components for me, I had EVERYTHING! Well, following the trends of the amateur radio fashion of that time, my main focus was on radio receivers and amplifiers, of course, on transistors and microcircuits. I haven’t worked in this field for a long time, and I threw all the parts into the landfill a long time ago, but all this time I had a dream in my soul - to make a tube power amplifier, and not a simple one, but one that would make everyone gasp. But I must say that at work I spent most of my time dealing with electric vacuum devices, radio tubes, to put it simply, so this topic was very familiar to me. And then there’s this fashion for “warm tube sound”, which people are literally going crazy about. In short, a year ago I decided to make my dream come true. I immediately decided: the mainstream, ordinary tube amplifiers with an output transformer, are not interesting to me, this is not a royal matter! Shouldn't I invent a TRANSFORMER-LESS tube amplifier? Well, I well imagined the difficulties along this path, and I had some of my own thoughts on this matter, but still I decided to consult with the radio amateurs. I found a suitable group on Facebook, started publishing in it myself, and once asked a question on the topic: could anyone tell me the circuit of such an amplifier. And they immediately give me a link: http://hifisound.com.ua...a-6s33s-otl/ (I hope I haven’t violated any Forum rules by providing a direct link here, especially since it’s from a completely different area? ). I won’t talk about this scheme, if anyone is interested, I can later explain what’s what, I’ll just say that this scheme immediately interested me, both for its unusualness and for the potential opportunities that I saw in it. I decided to start. And where to start: there are 0 parts, there is a soldering iron, also a Soviet one, and a tester from Ketai. But, bad luck - the beginning: I got comfortable on Avito, on Ali Express, went to the Mitinsky radio market a couple of times, and began to acquire amateur radio junk. ..
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Show something different from the tables on the blog, otherwise I haven’t been there for a long time.
Children's themes have recently captivated me in a way that is not childish. They asked me to make various items for the kindergarten.
The first subject is educational, necessary and useful. This is a traffic light, children will use it to learn the rules of the road, an extremely important thing.
Let me make a reservation right away: they also made a pedestrian version with people, but a simpler one made from cardboard.
In principle, they asked me to make this three eyes simple cardboard, but can I really do it without any problems)) I thought about making a reliable educational object right away, and I did it. How long is enough?
The concept of the figure is that it is large enough for everyone to see, stable, durable and with a rotating mechanism, the point is that there are 4 sides, one side shows all the signals for a general understanding of the device.
The other three sides are given one signal, the teacher can turn and show any color out of 3 and ask the children about its purpose.
In general, it seemed to me that it would be right
Initial thoughts about color circles on magnets and other light bulbs had to be canceled; we need a simple, understandable solution that is difficult to break; magnetic circles can get lost, light bulbs and batteries can fail.
I don’t know whether the idea succeeded, but time will tell.
The entire base is MDF, which was glued together with PVA; for temporary tack, I also fastened it with a micropin.
Separately, I would like to note that you can use a circular saw to make circles of different diameters and, most importantly, the same size, using a simple device, first we cut square blanks, and then on the device, rotating the part, we cut off the corners to a polyhedron, and then rotating the part we finish it to a circle.
I glued the box together, the visors are halves of the eyes of the circles, I made a groove under them with a router, so such things cannot be securely glued into the end.
The whole thing rotates on a pipe from the joker system, in my opinion, for shelving, so that the stops do not fall out and fall through, which were fixed by bugs.
The base was made massive and wide from thick layers of MDF; with such a base, the traffic light is not so easy to tip over on its side.
I played the fool and drilled right through the pipe, so I had to put a plate on the return side.
I spray painted everything, then varnished it, the thing is ready.
I didn’t paint the signal circles; they were cut out of self-adhesive paper, which makes it easier to update the display item.
Who finished reading, look at the slides
Glass-magnesite sheet, the application of which, the disadvantages of which will be presented in the article, is a modern building material with excellent quality characteristics. It has the widest range of applications in interior and exterior construction. A number of builders believe that these canvases, also called magnetite, represent a worthy alternative to plasterboard. That is why you may be wondering what to choose - glass magnesite sheet (GML) or
The first material is superior to the second in a number of indicators. Home craftsmen and representatives of professional companies most often use standard materials, which is due to the lack of information about new solutions. However, magnetite allows you to save money and time when carrying out work.
general description
Glass-magnesite sheet, the application of which will be described below, has an interesting structure. It contains perlite, magnesium chloride, and fine wood shavings. Fiberglass mesh is also used in the production process. Different manufacturers have different percentages of ingredients, this is due to different classes of material. Among them we can highlight “Premium”, “Standard”, “Economy class”. If you want to use more durable sheets, then you should prefer those that have a high content of magnesium oxide. As a rule, glass magnesite sheet, the application of which the disadvantages are described in the article, contains MgO in an amount of 40%, this refers to a premium product, while MgCl 2 is added in an amount of 35%.
Features of the structure
The material is made in the form of sheets, the thickness of which can vary from 4 to 12 millimeters. The most common dimensions of the canvas are 2440x1220 millimeters. The outer side of the canvas has a smooth surface; it does not require additional processing; wallpaper can be immediately glued to such a base, and then paint can be applied. As for the side, it is rougher because it is not sanded. Installation of sheets can be carried out by either side. Most often, LSU is installed with the back side facing outward for treatment with plaster, which is due to its more impressive adhesion properties.
Area of use
If you are interested in FMS (glass-magnesium sheets), what it is, where and how to use it, you definitely need to find out before purchasing the product. The described material has a wide range of applications; it is used for finishing residential, industrial and public buildings. In private construction, LSUs are used when it is necessary to install arches, walls, partitions, and suspended ceilings. This material can be used for communication shafts and ceiling installations. It is convenient to use sheets as permanent formwork for pouring lightweight concrete. Using glass magnesite, the external walls of houses are finished, followed by the application of finishing materials.
Main advantages
If you are interested in LSU (magnesite board), you should know its composition, advantages and disadvantages even before starting work. Among the advantages are moisture resistance, low weight, flexibility, resistance to biological influences, as well as a wide range of applications. The sheets cope excellently with the effects of chemicals on their surface. Consumers also choose this material for the reason that it is environmentally friendly, frost-resistant, long-life, durable and fire safe. In the latter case, glass-magnesite sheets are superior to similar materials. The canvas does not burn even at a temperature of 1200 degrees. In terms of flammability, it can be classified as the highest class A. This includes materials such as metal, stone and concrete.
What positive features are still worth paying attention to?
The application, the characteristics of which are mentioned in the article, does not delaminate, does not swell or deform, which is true when exposed to moisture for a sufficiently long time. The material perfectly withstands conditions with high humidity, which indicates the possibility of using sheets in baths, saunas, swimming pools, as well as in basements.
For use in conditions with high humidity levels, another important characteristic is biostability. The surface of the canvas is resistant to fungi, mold, insects and bacteria. Acids and caustic alkalis do not harm LSU. You can count on the high strength of glass magnesite, which reaches 16 MPa in bending. It is convenient to work with sheets, as they are easy to cut and do not crumble, nor do they crack.
Fixation can be done using nails, self-tapping screws, or using a pneumatic gun. The canvases can be drilled. If you are interested in the pros and cons of the drywall analogue, you should definitely consider it. Among the positive features of the described material, one can also highlight its very insignificant weight, which is 40% less than gypsum board.
Frost resistance and strength
If you need a material that has a high frost resistance, then SML just meets these requirements. Its frost resistance is F50. The loss of mechanical strength is no more than 3.5%. During the production process, fiberglass is used, which performs reinforcing functions. This provides excellent flexibility and protects against breakage during transportation and installation work.
Quality of durability and environmental friendliness
Manufacturers promise that the LSU will last for 15 years or more. The final period of life will depend on the correct installation, as well as the characteristics of operation. When using, you do not have to worry about the fact that the canvas can have a negative impact on human health. This is explained by the fact that the sheets do not contain harmful ingredients such as formaldehyde, asbestos, phenol, etc. The material is not capable of causing allergic reactions, therefore it is classified as an ecological product that can be used even in medical and children's institutions.
Cons of LSU
If you decide to use glass-magnesite sheet, the application and disadvantages of this material are also important to find out. Among the latter, some features of low-quality glass magnesite can be highlighted. When wet, it can release salt, which can cause metal corrosion. Low-class material can be used exclusively for interior finishing work, which presupposes the absence of high humidity and sudden temperature changes. One cannot help but pay attention to the difference in quality depending on the class. When comparing the Premium and Economy lines, the former has a more impressive magnesium oxide content. Among other things, this top-class product is made using high-quality fiberglass mesh, which has smaller cells. This material has a denser structure and improved fire resistance and frost resistance.
High-quality glass magnesite
If you are thinking about how to distinguish a high-quality glass-magnesite sheet, then you need to pay attention to the color, which should be beige or yellowish. The edges of the materials should not be brittle, and the water after exposure to the sheet should not become cloudy.
Hello, dear Reader!
Nowadays in construction and renovation there is a tendency to move from “wet” methods to “dry” ones, for example, instead of a thick layer of plaster, leveling the walls with plasterboard.
Today we’ll talk about glass-magnesium sheet - a relatively new material that is just suitable for such “dry” methods.
LSU panels: what is it? Glass-magnesium, or glass-magnesite, sheet (stroylist, novolist) is one of the new construction and finishing materials that tried to replace plasterboard, but has not yet replaced it. Let's figure out why it wasn't replaced.
It contains caustic magnesite, magnesium chloride, expanded perlite and fiberglass. There may also be shavings present. The technical characteristics of LSU allow it to be used both for construction and finishing. Glass magnesium is not afraid of water, fire, does not emit harmful substances when heated, and retains its properties at temperatures down to -50°C.
It does not crumble and is much stronger than gypsum-based building materials. Standard size - 3000*1200 or 2440*1220 mm, thickness - 3, 6, 8, 10, 12 mm. Glass-magnesium sheets are produced in the categories “Standard” for interior decoration, “Premium” with increased moisture resistance and strength for cladding facades and construction.
The panels are also produced in the “Superpremium” category - they can be painted, laminated, covered with veneer, and in the “Interior” category - these are ready-made painted SML panels for interior decoration.
Novolist can replace plasterboard in interior decoration, as well as DSP and GVL in construction. LSU is used to create, for example, bases for floors and cladding.
GVL, TsSP or SML
Which is better, GVL or SML? They are comparable in cost and both are strong enough for their purposes. But there are differences, mainly in favor of glass magnesium.
- Glass magnesite can be used in damp rooms; it practically does not absorb water and does not swell from moisture.
- To cut gypsum board you need a special jigsaw; in the case of glass-magnesium, you can get by with a drywall knife.
- Stroylist does not require pre-treatment before gluing wallpaper.
- Ceramic tiles do not adhere well to GVL.
- Gypsum fiber can emit dust, LSU does not emit anything, and is safe for allergy sufferers and people with asthma.
- The magnesite plate is stronger, so it can be taken with a smaller thickness: 8 mm instead of 12 mm gypsum board.
- Glass magnesite is more flexible.
DSP is used for partitions, cladding, floors, roofing bases, for frame structures, that is, in the same place as LSU. Both of these materials are fireproof, resist fungi, mold and insects, are environmentally friendly and are not afraid of frost.
What to choose - SML or DSP?
- With DSP, problems sometimes arise when puttying joints - the dimensions of the boards change slightly with changes in humidity.
- It is important that glass magnesium is much lighter than CBPB.
- DSP bends poorly, making it difficult to finish structures of complex shapes.
How to install SML panels?
Usually, the supporting structure is first made from a profile. In this case, there should be 60 cm between the vertical profile posts if we are covering the wall. For a suspended ceiling, the distance between the profiles should be 40 cm.
If the panels are wet, they need to be allowed to dry first - wet ones are more fragile. For greater strength, it is better to place the panels so that the fibers are vertical. A gap of half the thickness is left between the sheets.
This material is easy to process: drill, cut; a regular drywall knife is suitable for this. During cutting, it does not crumble or crack, but if you cut with a jigsaw, dust appears, so it is recommended to work in a respirator.
For fastening, special self-tapping screws with notches on a countersunk head are used, the same as for drywall. It is better to attach the back side to the profile. The back side is the one on which the reinforcing mesh is visible.
LSU as a building material
Walls made of magnesite slabs can be finished in a variety of ways: they can easily withstand ceramic tiles, and they can be coated with plaster and putty. Glass magnesium can be used as a base for floors, roofs, floor leveling, and suspended ceilings.
But magnesite is used not only for finishing; it is used to produce SIP panels from which houses are built. These sandwich panels use new sheet metal and rigid insulation, such as polystyrene board, mineral wool, or a combination of both.
An important advantage of such houses is their rapid construction. And SIP panels made of magnesite allow you to add to this advantage all the advantages of glass magnesite. Sandwich panels with dimensions of 2440*1220 mm and thickness of 224 or 174 mm are produced.
They are called stone panels because they are heavier than regular OSB (oriented strand board) SIP panels. In addition, ready-made kits are sold from which you can assemble a house. SML panels are used as permanent formwork for lightweight concrete. Building blocks with lightweight concrete fillers are also produced.
How to choose
If you decide to use new sheet for the construction or decoration of your home, the question arises, how to buy really high-quality magnesite?
- Firstly, you should not spare money - it is better to choose the “Premium” category than “Economy”. More expensive stelomagnesium is not only more durable, but also definitely safe - cheap ones may contain harmful additives such as asbestos.
- Secondly, some signs indicate quality:
- First of all, pay attention to the edges - they should not be uneven or brittle.
- If you run your hand over the surface, you should not feel any dust.
- If it is possible to immerse a piece of glass magnesium in water, do so. If the water becomes cloudy, this is a sign of the presence of gypsum, which means it is of poor quality.
- Look at the reverse side - the non-woven base also gives out poor quality and reduces fire resistance.
- Material from a responsible manufacturer is clearly labeled.
What is the price?
The cost of one sheet, depending on the thickness, is from 800 rubles for the “Premium” category and from 600 rubles for the “Standard” category. If the price is lower, you should think about quality. SIP panels based on glass magnesite cost 3990-4200 rubles per piece. The price of a house kit made from “stone panels” starts from 300 thousand rubles.
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