Sizes and cost of sandwich panels. Roofing sandwich panels: Standard and custom sizes. What thickness is the sandwich panel?
To quickly and inexpensively complete construction works, often use sandwich panels, the weight of 1 m2 of which is lower than the weight of a brick or concrete wall of the same area. Depending on the thermal insulation parameters, select optimal type panel and its thickness and find the table weight value required for calculation load-bearing structures.
Types of Sandwich Panels
All varieties consist of outer and inner layers, between which a heat insulator is laid. The composition of the layers determines specifications and properties of building materials.
OSB sandwiches
The inside and outside of the structure are covered with oriented strand boards, and the filling is most often polystyrene foam. Ready-made “sandwiches” are 4 times stronger than wooden-frame structures, so they are suitable for capital construction. With a small thickness (from 120 to 150 mm), OSB sandwiches have a thermal conductivity 8 times less than brick or concrete wall. Sandwich panels made from OSB boards have dimensions of 1.25 (2.5) m x 2.5 - 7.3 m, the weight of 1 m2 of puff material ranges from 18 to 20 kg. 
Sandwich panel element-by-element assembly
The design consists of a cassette profile into which any insulation is inserted, covered with a windproof film. Corrugated sheeting is most often chosen as cladding, metal siding. The advantage of this type of sandwich is their maintainability, the ability to select insulation with a lower specific weight - if it is 40 kg/m3 (mineral wool), then the weight of a square meter of a prefabricated structure with a thickness of 200 mm does not exceed 25 kg. 
Metal sandwiches
They are faced with a galvanized metal sheet (smooth or profiled) with a thickness of 0.5 mm. A decorative and protective polymer coating is applied on top, and inside– a layer of primer. Mineral wool, polystyrene foam or polyurethane foam are used as insulation. Multilayer products for walls and roofs are produced; they differ in the type of locking connection and the height of the cladding profile. Applicability metal sandwiches– construction of garages, hangars, outbuildings. 
Weight of wall metal sandwich panels
The information given in Table 1 shows how different the weight parameters of structures are, depending on their thickness and the insulation used.
Table 1
Dimensional and weight parameters of metal sandwiches for walls
As an example, we find the weight of a 1.2 m x 10 m wall sandwich panel, 150 mm thick, filled with mineral wool. First, calculate the surface area: 1.2 * 10 = 12 m2. The result is multiplied by the weight of a square meter: 12 * 26.3 = 315.6 kg.
Weight of metal roofing sandwich panel
Roof “sandwiches” with anti-corrosion coating and unique locks serve reliably for several decades. Table 2 allows you to compare options with different insulation by weight. 
table 2
Dimensional and weight parameters of metal sandwiches for roofing
Calculation of the weight of a roofing sandwich panel 100 mm thick with dimensions 1 m x 2 m with polyurethane foam filling: area = 1 * 2 = 2 m2; weight = 14 * 2 = 28 kg.
Knowing the estimated number of sandwiches for the walls and roof, their total mass is found - the parameters of the floors, foundation and rafter system. Conclusion: the weight of 1 m2 of sandwich panel is one of its main technical characteristics.
Not everyone has the desire or ability to delay construction for several years. Moreover, there is no need for a long time. There are several technologies rapid construction. The leaders are frames. With a minimum of costs, we very quickly get a full-fledged building. But the frame is only half the battle. We still need to choose the casing. One option is multilayer materials. They are called sandwich panels. The dimensions of sandwich panels make it possible to further reduce construction time, because we immediately get a building with exterior and sometimes interior decoration.
What are sandwich panels
Sandwich panels are a modular building material intended for cladding buildings and structures that are built according to frame technology. They consist of three layers: two sheets of rigid material and insulation between them. The use of this material significantly speeds up the finishing and construction of buildings, since it is immediately installed and external cladding, and insulation, and internal lining. Moreover, the dimensions of the sandwich panels make it possible to cover the roof quite big house without horizontal seams - maximum length sandwich panels can be 12 meters. More than enough for . The only question is transportation, but that's another story.
This is what a sandwich panel house looks like
So, the design is three-layer. The layers are glued together and pressed at the same time. There are two methods of pressing - cold and hot. In any case, the layers hold securely. It is impossible to separate them from each other without the use of mechanisms.
Sandwich panel is a building material for covering frames. Consists of two sheets of rigid material, between which there is a layer of insulation
There are sandwich panels for walls and roofs depending on their purpose. They usually differ in appearance, the thickness of the materials used and the type of profile. There are smooth slabs, there are with different types profiles. There are roofing ones with corrugation like corrugated sheets, and there are others very similar to metal tiles.
Are there any other options special purpose. For example, for garage doors. Usually these are steel sheets, but coated with pural or some other damage-resistant polymer. They differ in the shape of the castle. Such gates are usually made lifting, so the locks have a different shape. And the longitudinal edges are not open, but covered with the same steel sheet, which is bent to form a smooth bevel.
What a sandwich panel looks like depends on the materials and the method of painting it.
Wall sandwich panels can be smooth or corrugated. There is a traditional one (wave, trapezoid, small corrugation), and there is a more decorative one - like a stone, brickwork and even a tree.
In general, the appearance of sandwich panels can vary.
What are they made from?
The materials of the outer layers of sandwich panels can be different. The most common ones are with a “shell” made of sheet steel, but there are also aluzinc, plasterboard, plastisol, polyester, pural, DSP, OSB (OSB), chipboard. The choice of material depends on the purpose of the building that is going to be finished and on the installation location. The dimensions of sandwich panels do not depend on the layer materials, so there are no restrictions here.
Wall sandwich panels can be like this - this is for internal partitions
For example, during the construction of warehouses and production facilities, utility rooms, both sides are steel sheets. The coating and profile of internal and external sheets can be different for the required tasks. When covering the external walls of private houses, there may be metal on the outside, and gypsum fiber board, gypsum plasterboard, chipboard, OSB on the inside. It depends on what the owner chose. For partitions, there are options on both sides with fiberboard, gypsum plasterboard, OSB and chipboard or combinations thereof. The material is good for what it is different variants both in terms of characteristics, appearance and price.
Outer layer - steel sheets
Used as the outer layer of sandwich panels sheet metal. Sheet thickness - 0.35-0.7 mm. If metal is placed on both sides, then for the outer side they take a thicker one - 0.7 mm, for the inner - a thinner one - 0.35-0.5 mm. Agree, this is justified. Firstly, the weight is less, and secondly, the cost is lower. And strength for internal lining more than enough. Even if it is a production facility.
Sandwich panel coating: example of layer-by-layer application
The metal is covered with several shells with protective properties. Galvanization is required, and then additional layers are applied - primers and polymer coatings, which protect and give a more “civilized” look.
Types of polymer coatings for sandwich panels
The quality of steel is very important, but galvanization and quality are equally important protective coatings. The durability of the metal, and therefore the reliability and durability of the wall or roof, depends on how carefully the coating is applied. At first steel sheet is coated with zinc, and then one of the types of polymers is applied to the galvanized surface. It could be:
Of this entire list, the most commonly used are polyester, PVC and polyurethane. Sandwich panels are also made from stainless steel sheets. Such sandwich panels are used in refrigeration chambers ah at enterprises of food or pharmaceutical groups.
Sandwich panel profiles
Sandwich panels with an outer metal cladding can be smooth or profiled. Smooth ones have lower mechanical resistance; it is easier to make dents on a flat surface than on a corrugated one. If the house is located in a yard, the likelihood of damage is low. Moreover, the paths can be made not close to the walls of the house, but on top or.
Possible profiles of internal and external surfaces for metal cladding
You can also use profiled sandwich panels to cover the frame. Some look exactly like clapboard, but there are more interesting options. True, they are “more interesting” for the price.
Insulation
Different types of insulation for sandwich panels are also used:
- mineral wool (stone or glass);
- polyurethane foam (foam or PPS);
- expanded polystyrene (PPU or PUR);
- polyisocyanurate foam (PIR).
Compare the characteristics of sandwich panels with different insulation
The best of all is the last one - PIR. It appeared quite recently. Thermal characteristics is on par with polyurethane foam, but better fire safety(tolerates heat up to 140°C without destruction or ignition). Its disadvantage is the high price. In general, they usually choose between mineral wool and polyurethane foam. Foam plastic loses to both of them, although it costs less. But the difference in price does not cover the difference in performance properties.
Sandwich panel sizes
Standards for this species building material no, so if you wish, you can find or order those sizes of sandwich panels that suit you best. Many manufacturers are doing this. It is not a fact that a large enterprise will make a small batch according to your requests, but you can come to an agreement with small ones. Although, you can talk to the big ones.
For sandwich panel sizes, see each specific manufacturer.
Most likely, “custom” sizes of sandwich panels will be more expensive (in terms of square meter). But it may be justified. Fewer cuts/waste, lower overall costs. In general, you need to count and watch. In general, each enterprise has its own maximum and minimum dimensions. They depend on the available equipment. The table summarizes the most common sizes of sandwich panels. They were divided by purpose - wall and roof. Because they are usually different.
Please note that the “working” or “useful” width is indicated. In fact, the size of each panel will be slightly larger - precisely due to the lock. When calculating the quantity, you will need exactly the working width. And the actual one will be required for transportation, but rarely is it indicated. You can check with the sellers. On average, you can throw 15 cm. This is more than enough.
One more thing. Not all manufacturers have all the sizes of sandwich panels indicated in the table. These are “prefabricated” results. The values chosen are those that occur most often. But one company offers only one width, another - two or all three options. Likewise, not everyone can make a sheet 12 meters long. For some, the maximum is 6.3 meters. So again, monitor the situation in your region.
Characteristics
As you understand, it is difficult to talk about the characteristics of sandwich panels “in general”. The materials used may be too different. And the “sheathing”, and the insulation, and the thickness of all layers. All this is different. And the characteristics of each component vary over a wide range. Therefore, it is worth looking at specific properties once you have decided on the manufacturer. In the meantime, to help you get your bearings, we present the data of one of them. By the way, you can look at the tables in the paragraph about types of insulation. This is data from one of the sites. In this section we provide data from another manufacturer. At the same time, you can evaluate the range of values.
Wall sandwich panels - technical characteristics of one of the manufacturers
If you compare the two tables, you will see that in the first case, a sandwich with polystyrene foam has a higher thermal resistance. In the second, on the contrary, it turned out to be “warmer” basalt wool. And no one is lying about it. They just use different materials. That's all.
Load-bearing capacity may also be of interest. Here the situation is approximately the same as with thermal resistance. Depends on the metal, the presence or absence of relief, its shape and size. The insulation and the method of connecting the layers also contribute. In general, there are also a lot of criteria. So, the values must be learned from a specific material. We provide the table for reference only, so that you can roughly estimate the possible load.
Load bearing capacity quite worthy
As you can see, quite decent load-bearing capacity. This makes it possible to make not only walls and roofs from sandwich panels, but also floors. Not a bad way to speed up construction.
Connecting sandwich panels to each other
Sandwich panels are connected to each other using locks. Wall and roof locks differ significantly. In roofing systems, on one side, a special steel release is made in the shape of a wave. It is “slipped” onto the protrusion of the previous sheet. This is how the connection happens. In wall panels, the lock is made according to the tongue-and-groove principle. Moreover, it is better if not only the outer skin, but also the insulation is connected according to this principle.
Connecting sandwich panels to each other: locks of varying complexity
In general, in the entire structure, it is the panel joints that are the weakest points. Not only in terms of safety, but also in terms of heat preservation. The first panels were made with the connection of only metal sheets, and the insulation was simply joined together. But the seams froze, so they began to complicate the shape, creating labyrinths. Also, when connecting, additional sealing tapes are used to ensure that blowing and freezing are completely avoided.
Wall panels at vertical installation must be fixed. With horizontal this is not necessary. It is also mandatory to install fasteners when laying sandwiches on the roof
In some cases, additional fixation is used - screws or studs. Some forms of locks allow the fasteners to be hidden, while in others they are installed on top. According to the type of installation of corrugated sheets and metal tiles.
What is a sandwich panel? This term refers to a multilayer building material that is used for the construction of frameless structures. During construction, the panel elements are connected to each other with a locking connection, forming a durable monolithic surface.
The first sandwich panels appeared on construction market V 1930 year. The inventor of the design is engineer Lloyd. First used for assembly, the panels immediately began to gain worldwide popularity, allowing buildings to be quickly erected for various purposes. Russian manufacturers mastered the technology in the 90s last century.
Standard sandwich panels consist of several layers: an outer cladding and an insulating layer between them. The main components are connected to each other by hot pressing, or bonded with a polyurethane-based adhesive.
External cladding
Two-component adhesive layer No. 1
Two-component adhesive layer No. 2
Trapezoidal mineral wool lamellas
Internal lining
Protective film
Roof lock
Structural mineral wool lamellas
Thanks to their composite structure, sandwich panels have a lot of undeniable advantages. In particular, the compressed material has minimal weight, which significantly reduces the load on the foundation. Have sandwiches and high level thermal insulation, while the insulation layer is reliably protected by the external cladding, so the panels do not lose their properties over time.
Types of profiling of external cladding of panels
What are they? Types, characteristics and sizes
Sandwich panels are divided according to several criteria, which determines their characteristics and application features.
By purpose
According to purpose, the material is divided into three groups:
These are usually durable products designed for vertical installation. The outer lining is made of durable material with polymer coating, color palette implies a wide range of shades. A locking system is used to connect wall elements together. Z-LOCK.
This connection ensures a hermetically sealed joining of the panels, which eliminates the formation of cold bridges and reliably protects the insulation from any external influences. It is worth noting that for additional protection of butt joints, additional elements, sealant, construction tape and polyurethane foam are used.
Dimensions (mm)
In its structure and composition, the material resembles wall analogues, however, there are some differences. For example, a lock connection belongs to the class F-LOCK, which prevents moisture from entering the roof. For these purposes, a pronounced profile of the external cladding is also provided.
To protect panels from aggressive influences environment and direct exposure to ultraviolet rays, anti-corrosion spraying is used. It is worth noting that panels of this category are a complete roof element, and therefore do not require additional protection of the joints.
Dimensions (mm)
It is worth noting that according to GOST standards, some deviations in size chart, which does not classify the panels as defective. It is important to understand that the sizes given are only relevant for domestic producers. In Europe, different standards apply, so sandwich panels produced abroad may differ from Russian standards.
Corner
As the name suggests, such panels have a rather limited scope. They are used to protect the corners of buildings from moisture, improve appearance. Panels are mounted on corner slopes wall structures, which provides reliable thermal insulation.
Comparative load table
The picture above shows the options facade cladding for so-called element-by-element sandwich panels
If we talk about solid sheets, the following materials are used here:
Galvanized or stainless steel with polymer coating.
Combined materials, where one metal sheet is replaced with plasterboard or DSP ( cement bonded particle board). Such options are usually used for arranging internal partitions.
Both layers are made of PVC.
The outer layers are made of special paper, aluminum foil or polyester. Such products are usually used for additional thermal insulation of floors or foundations.
Manufacturers typically use the following materials:
Minvata. It is a fibrous composition obtained from silicate magma and metallurgical slag. The material is completely non-flammable, but is very sensitive to humid environments. When installing such panels, it is necessary to use means personal protection, special attention is paid to the tightness of the joints. In addition, sandwich panels with mineral wool have a fairly large structural mass.
Glass wool. In terms of its properties, the material is almost identical to mineral wool. However, thanks to the fibers big size, such panels have greater elasticity and, accordingly, are more resistant to dynamic loads.
Polyurethane foam. This material has absolute environmental safety, resistant to any external influences, has excellent thermal insulation properties and moisture resistance. The only drawback of this filler is flammability.
Expanded polystyrene. Sandwich panels with such a thermal insulation layer are often used in the construction of retail establishments and the installation of refrigeration chambers. The material has a porous structure, which provides reliable insulation interior spaces. However, expanded polystyrene has relatively low strength, which negatively affects its durability.
Comparative characteristics of panels with different types of insulation
| Name of sandwich panels |
Filler type |
Heat transfer resistance (kv.mS/W) |
Thickness (mm) |
Specific gravity of filler (kg/m3) |
Moisture absorption |
|
Wall |
Polyisocyanurate foam |
||||
|
Roofing |
|||||
|
Wall |
Expanded polystyrene |
||||
|
Roofing |
|||||
|
Wall |
Basalt mineral wool |
||||
|
Roofing |
|||||
Knowing these features, it will not be difficult to choose a sandwich panel in accordance with individual requests.
Standard RAL colors
Weight
The structural weight of sandwich panels directly depends on the type and thickness of the thermal insulation layer. In addition, the density of the insulation also plays a key role. For example, for mineral wool this figure is 110 kg/m2, for foam plastic - 25 kg/m2. Accordingly, subject to standard dimensions, the weight of wall sandwich panels with mineral wool can vary within 16-39 kg. Similar products that use foam plastic as insulation will weigh 12-17 kg.
For walls
| cladding thickness, mm | panel weight, kg | |
| 50 | 0,5 | 16,03 |
| 0,7 | 19,55 | |
| 80 | 0,5 | 19,7 |
| 0,7 | 23,22 | |
| 100 | 0,5 | 22,15 |
| 0,7 | 25,67 | |
| 120 | 0,5 | 24,6 |
| 0,7 | 28,12 | |
| 150 | 0,5 | 28,27 |
| 0,7 | 31,79 | |
| 175 | 0,5 | 31,34 |
| 0,7 | 34,86 | |
| 200 | 0,5 | 34,38 |
| 0,7 | 37,9 |
For roofing
The weight of roofing sandwich panels is 12-38 kilogram, depending on the thermal insulation layer used.
| panel thickness according to insulation t, mm | cladding thickness, mm | panel weight, kg |
| 50 | 0,5 | 17,4 |
| 0,7 | 21,16 | |
| 80 | 0,5 | 21,07 |
| 0,7 | 24,83 | |
| 100 | 0,5 | 23,52 |
| 0,7 | 27,28 | |
| 120 | 0,5 | 25,97 |
| 0,7 | 29,73 | |
| 150 | 0,5 | 29,64 |
| 0,7 | 33,4 | |
| 175 | 0,5 | 32,71 |
| 0,7 | 36,47 | |
| 200 | 0,5 | 35,75 |
| 0,7 | 39,51 |
Trusted manufacturers
Considering the popularity of sandwich panels, there are quite a lot of enterprises operating in Russia that have chosen the production of this building material as their specialization. Let's bring TOP 5 verified companies.
"Lissant". The company began its activities in 2008, and now has several production lines located in different regions of the country. The manufacturer uses only high-quality raw materials; the technological process is based on the use of Italian equipment. The company has repeatedly become a prize-winner of various competitions; its products are subject to mandatory certification quality by class ISO 9001.
Teplant LLC. The company was founded on the basis of the Kuibyshev enterprise for the production of products from mineral wool. The production of sandwich panels was established in 2001, and now it is one of the largest manufacturers in the Russian region, supplying the market with more than 6 million m2 annually.
Vesta Park Group of Companies. The company's product range includes wall and roof sandwich panels of various types color range. The company has multi-stage quality control, which has allowed the company to repeatedly become a nominee in all-Russian competitions.
LLC TD "Stimet". The company’s key advantage is affordable prices for its products, while maintaining European quality. Sandwich panels from this manufacturer are equipped with standard and rebated locking connections, mineral wool or expanded polystyrene is used as a thermal insulation layer.
"Technostyle". The company works with 2008, the company's goal is to take a leading position in the Russian construction market. The company is constantly tightening production quality control, modernizing technological processes and uses European equipment. At the same time, the sandwich panels of this manufacturer differ affordable prices. The manufactured products fully comply with Russian and international standards quality.
It is worth noting that these are not the only manufacturers of sandwich panels in Russia, however, the most competitive companies whose products deserve the highest ratings from consumers are listed here.
Speed and quality in construction are two seemingly perfect different concepts, which do not intersect or interact in the complex process of building construction. However, modern technologies break established stereotypes.
Today, the most popular and practical material Sandwich panels are used for building construction. They allow you to implement architectural solutions of varying complexity in record time.
Sandwich panels make a building warm, durable and aesthetically attractive. There are different types and purposes: it all depends on thermal insulation insulation and the material from which the framing sheets are made.
There are wall and roofing ones. When choosing a material, you need to know the differences, what are their operational feature and what is their advantage? How not to get lost in a wide range of manufacturers and follow the path of least resistance?
Dimensions and weight
Sandwich panels dimensions are standard:
- Length – 1.8 – 13 m.
- Width – 1.2 m.
- Thickness – 50-250 mm.
The weight of the material depends on the thickness of the insulation and facing sheets used. The heaviest heat insulator is basalt fiber slabs. The reason for this is not only the specific gravity of the insulation itself, but also the fact that to create sandwich panels High Quality A minimum of 80 cm of mineral wool must be used.
When calculating weight, the density of the insulation is taken into account. Consequently, mineral wool has the most high density- 110 kg per cubic meter, and the smallest - having a density of 25 kg per cubic meter. For calculation total weight, you need to know the weight of the facing sheets, the thickness of the insulation layer and the dimensions of the panel itself.
Sandwich panels with a thickness of 50 mm based on mineral wool and galvanized sheets weigh 15.2 kg, with a thickness of 200 mm - 38.2 kg. With 50 mm polystyrene foam, the panel weighs 9.8 kg, with 200 mm - 14.8 kg. With polyurethane foam of 50 mm, the weight reaches 11.2 kg, with 200 mm - 22 kg.
Price, advantages and disadvantages
The cost of a building material depends on its purpose, thickness and insulation used.
Prices for façade sandwich panels with mineral wool start at 800 rubles per square meter. They can reach 1,500 rubles, depending on the color and amount of heat insulation.
Wall panels have a cost in the range of 1100-2150 rubles.
Main advantages:
- Fast installation speed, easy maintenance and repair.
- Construction does not require special conditions and can be carried out at any time of the year.
- Effectively retains heat in the room.
- They are created from environmentally friendly ingredients, are easy to care for and are safe for human health.
- Being light in weight, they do not exert unnecessary impact on the foundation.
- Installed without additional external finishing.
- According to plumbing regulations, they can be used in Food Industry and for the construction of medical institutions.
- Does not react with chemicals and aggressive natural conditions.
- Quite low cost compared to wood, brick, concrete panels.
Main disadvantages:
- May not withstand strong mechanical load.
- External damage often appears in the form of chips and scratches.
- At the joints between the panels, gaps form through which cold air can penetrate.
- Freezing is possible for the same reason.
- The frame may be damaged due to strong condensation and “dew point”.
- Over the years, the panels dry out and decrease in volume, which is why they lose their performance qualities.
- may release toxic formaldehyde.
Description and scope
Having such high performance characteristics and unique design capabilities, sandwich panels have confidently occupied their niche in construction.
- this is a material that consists of two rigid sheets and insulation that meets various requirements. The main purpose is residential construction to create prefabricated buildings. Such panels are called with the prefix SIP or SIP.
They have a hermetically sealed structure. The basis for such panels are OSB boards with polystyrene foam layer. Its cost also depends on the thickness of such a panel.
For commercial purposes, they are used in the construction of supermarkets, shopping centers, sports complexes, and industrial workshops.
You may have noticed more than once how tall car dealerships, new car washes and huge trading floors. This is the construction technology using sandwich panels.
For the first time, the material was produced in the USA for the construction of a one-story building. Initially, the technology had more disadvantages than advantages, however, the panels looked very attractive and were easy to use.
Over time, the construction process was improved and brought to the level of mass consumption. In Russia, the material found its application in 1974. Not much time passed, and the percentage of distribution on the market reached 40.
Used to implement the following projects:
- Pavilions for trade and sports.
- Facilities for shops and fast foods.
- Warehouse and industrial buildings.
- Agricultural buildings.
- As interoffice partitions.
- For roof installation.
- For cladding buildings...
Sandwich panels provide high-quality insulation and can be used as a material for the reconstruction of buildings. In the future, the production of panels that could independently generate electrical energy is being considered. For this purpose, photocells are built into the sandwich design.
Varieties
Sandwich panels vary depending on the insulation used.
The following materials are used:
Expanded polystyrene or polystyrene foam
It has a cellular structure. Sandwich panels with similar insulation are relevant in the production of industrial facilities, retail outlets and storage chambers. Also used in popular Lately « Canadian technology", which allows you to create houses quickly and reliably.
Pressed mineral wool
Popular and in demand material. Mineral wool panels are used in construction simple structures, where speed and simplicity are important.
They are easy to repair, have high thermal insulation qualities and do not burn when exposed to open fire. Easily tolerate low and high temperatures, do not deform, have excellent sound insulation properties. They do not respond to aggressive environmental influences.
Polyurethane foam
It combines very valuable qualities: strength and lightness. Such panels are durable and waterproof. Has high thermal insulation properties.
A distinctive feature of the material is the fact that polyurethane foam is resistant to fungi, mold, and is not susceptible to attack by rodents and insects. It is fireproof, therefore it has wide industrial and domestic applications. The only drawback is the high cost of such panels.
Fiberglass
A material for a specific purpose, which consists of many thin glass threads. In panels with fiberglass, sound insulation properties are especially valued. Does not burn, is easy to transport and install without any difficulties. Resistant to chemical attack. However, such panels can only be used in environments where the temperature does not rise above 40 degrees.
Polypropylene
It has a honeycomb structure and is resistant to moisture. Unaffected chemical substances. Is light weight and low thermal conductivity. When producing sandwich panels, such insulation must be protected from fire by choosing the right facing material.
Also, panels may vary depending on the type of coating. The design can consist of two different facing materials or have the same origin. The external coating determines the main functional properties of sandwich panels.
There are the most common materials used as cladding:
- Zinc coated steel– the most popular and available material, which protects panels from corrosion, has a long service life and is easy to handle.
- PVC– relevant for indoor use.
- OSB– the basis of panels for prefabricated structures.
Properties and characteristics
Sandwich panels are produced by cold or hot pressing. Thus, all components of this material are glued together.
Main technical characteristics:
- High strength.
- Low level of moisture absorption.
- Optimal thermal conductivity.
- Long service life.
- Resistance to temperature changes.
- Ability to resist chemical and atmospheric influences.
- Possibility of use from -50 to +60 degrees.
- Withstands pressure of 0.96 MPa.
- High sound insulation.
Under the press, using loading devices, are placed facing materials And internal insulation between them. The surface is coated with high-strength glue and pressed under pressure.
The design of wall and roof sandwich panels consists of:
- two profiled galvanized metal sheets 0.5 mm thick with a polymer coating “Polyester”. For the production of linings, only rolled hot-dip galvanized steel from the Russian metallurgical plants NLMK and Severstal are used;
- one layer of high-quality insulation, at the customer’s choice, either mineral basalt wool (density 100-140 kg/m3) or expanded polystyrene (density 13-25 kg/m3).
- High-quality special adhesive produced by DOW is used for a strong adhesive connection. Wall and roof sandwich panels from StalProfilGroup are produced in accordance with technical requirements TU 5284-001-18201124-2016.
Sandwich panel sizes
Wall sandwich panels are produced in a working width of 1190 mm, and at the individual request of the client in a width of 1000 mm. The total (before installation) width of the sandwich panels, including Z-Lock locks, is 1206 mm. The length of Wall and Roof sandwich panels is determined by the Customer and can be any in the range from 1.5 meters to 14 meters. The thickness of wall and roof sandwich panels corresponds to the thickness of the insulation - Mineral Wool or Expanded Polystyrene.
Deviations from the nominal dimensions of the panels must correspond to those indicated in the table.
Profiling
In the production of wall sandwich panels, we use the following types profiling:
Micro RIB
Without profiling, with smooth sheet on both sides. Also, together with profiling 11 RIB and Mikro RIB, you can inner surface use Smooth Leaf.
Roofing sandwich-panels are produced in a working width of 1000 mm. The total (before installation) width of roofing sandwich panels, including R-Lock locks, is 1085 mm. To produce roofing sandwich panels, one type of profiling with five trapezoidal stiffeners is used.
Wall panel weight
The specific gravity of sandwich panels is an important indicator that determines both the installation capabilities of the panels and the load on the supporting frame.
Data on the specific gravity of wall sandwiches with mineral wool insulation with a density of 110 kg/m³ panels are given in the table.
| Panel thickness [mm] | Width [mm] | Panel length [mm] | Specific gravity of sandwich panels [kg/m²] | ||
| 0,5 | 0,6 | 0,7 | |||
| 50 | 1190 | 1500 - 14000 | 14,61 | 16,26 | 17,93 |
| 80 | 17,91 | 19,56 | 21,23 | ||
| 100 | 20,11 | 21,76 | 23,43 | ||
| 120 | 22,30 | 23,96 | 25,62 | ||
| 150 | 25,61 | 27,26 | 28,93 | ||
| 180 | 28,31 | 30,44 | 32,13 | ||
| 200 | 31,11 | 32,76 | 34,43 | ||
Specific Gravity Data for wall panels with insulation: Expanded polystyrene “KNAUF” with a density of 25 kg/m³.
| Panel thickness [mm] | Width [mm] | Panel length [mm] | Specific gravity of sandwich panel [kg/m²] | ||
| 0,5 | 0,6 | 0,7 | |||
| 50 | 1190 | 1500 - 14000 | 10,36 | 12,01 | 13,68 |
| 80 | 11,11 | 12,76 | 14,43 | ||
| 100 | 11,61 | 13,26 | 14,93 | ||
| 120 | 12,11 | 13,76 | 15,43 | ||
| 150 | 12,86 | 14,51 | 16,18 | ||
| 170 | 13,30 | 15,01 | 16,68 | ||
| 200 | 14,11 | 15,76 | 17,43 | ||
Data Specific Gravity roofing panels with mineral wool insulation with a density of 130 kg/m³ and metal sheets thickness 0.6 and 0.7 mm.
Data on the Specific Weight of roofing panels panels with polystyrene foam insulation with a density of 25 kg/m³ and metal sheets with a thickness of 0.6 and 0.7 mm.
Thermal insulation properties
Taking into account the calculated average thermal conductivity coefficient of mineral wool and expanded polystyrene, the values of the heat transfer resistance of sandwich panels depending on their type are given below. When calculating, the thermal conductivity coefficient for mineral wool with density was taken:
110 kg/m3 - λs = 0.045 W/m °C
for expanded polystyrene density:
25 kg/m³ - λs = 0.04 W/m °C
Load bearing capacity
Load-bearing capacity of wall sandwich panels under a uniformly distributed load (loading pattern - continuous two-span beam), kg/m².
| Span length L [mm] | |||||||
| 50 | 80 | 100 | 120 | 150 | 180 | 200 | |
| 1,0 | 191 | 316 | 397 | 398 | 597 | 717 | 798 |
| 1,5 | 128 | 210 | 262 | 317 | 398 | 478 | 530 |
| 2,0 | 95 | 156 | 195 | 238 | 296 | 356 | 396 |
| 2,5 | 86 | 122 | 156 | 189 | 235 | 283 | 317 |
| 3,0 | 61 | 101 | 129 | 157 | 197 | 236 | 262 |
| 3,5 | 52 | 87 | 110 | 133 | 165 | 201 | 225 |
| 4,0 | 47 | 75 | 96 | 116 | 146 | 177 | 197 |
| 4,5 | 40 | 66 | 84 | 102 | 128 | 156 | 172 |
| 5,0 | 35 | 60 | 76 | 91 | 115 | 140 | 156 |
| 5,5 | 31 | 53 | 69 | 88 | 102 | 119 | 140 |
| 6,0 | 27 | 44 | 58 | 70 | 88 | 100 | 119 |
| 6,5 | 21 | 38 | 47 | 59 | 73 | 90 | 100 |
Load-bearing capacity of roofing panels under a uniformly distributed load (loading pattern - single-span beam), kg/m².
| Span length L [mm] | Standard thickness panels [mm] | ||||||
| 50 | 80 | 100 | 120 | 150 | 180 | 200 | |
| 1,0 | 242 | 460 | 610 | 759 | 977 | 1194 | 1341 |
| 1,5 | 151 | 297 | 393 | 490 | 631 | 780 | 874 |
| 2,0 | 106 | 211 | 285 | 358 | 460 | 570 | 641 |
| 2,5 | 65 | 160 | 220 | 275 | 360 | 445 | 501 |
| 3,0 | 33 | 105 | 160 | 211 | 291 | 362 | 410 |
| 3,5 | 15 | 69 | 110 | 155 | 221 | 294 | 340 |
| 4,0 | - | 40 | 72 | 105 | 155 | 206 | 241 |
| 4,5 | - | 20 | 48 | 70 | 107 | 146 | 170 |
| 5,0 | - | - | 27 | 44 | 72 | 102 | 121 |
| 5,5 | - | - | - | 27 | 50 | 71 | 89 |
| 6,0 | - | - | - | - | 31 | 50 | 69 |
| 6,5 | - | - | - | - | 18 | 31 | 42 |
Load-bearing capacity of roofing panels under a uniformly distributed load (loading pattern - continuous two-span beam), kg/m².
| Span length L [mm] | Standard panel thickness [mm] | ||||||
| 50 | 80 | 100 | 120 | 150 | 180 | 200 | |
| 1,0 | 170 | 344 | 460 | 579 | 753 | 927 | 1040 |
| 1,5 | 103 | 219 | 295 | 370 | 484 | 600 | 675 |
| 2,0 | 70 | 153 | 210 | 268 | 350 | 435 | 491 |
| 2,5 | 51 | 117 | 160 | 203 | 271 | 337 | 381 |
| 3,0 | 36 | 91 | 127 | 160 | 220 | 272 | 310 |
| 3,5 | 27 | 73 | 102 | 132 | 181 | 225 | 256 |
| 4,0 | 18 | 55 | 84 | 110 | 151 | 190 | 218 |
| 4,5 | - | 31 | 54 | 73 | 106 | 140 | 158 |
| 5,0 | - | 17 | 33 | 49 | 72 | 98 | 113 |
| 5,5 | - | - | 19 | 30 | 50 | 70 | 81 |
| 6,0 | - | - | - | 18 | 31 | 47 | 56 |
| 6,5 | - | - | - | - | 18 | 31 | 40 |
