Choose the thickness of your Sandwich Panel

As a general rule, Sandwich Panels are composed of two steel sheets and an insulating core with different thicknesses depending on each situation and consumer. Below, you can find the most commonly used materials and the most suitable thickness for each project.

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In recent years, the Sandwich Panel has revolutionized the construction industry thanks to its unique features: great thermal and acoustic insulation, its low weight, and its self-supporting capacity for large spans. All this, without forgetting the easy installation and low cost , means that many professionals and end consumers use this kind of material.

Types of foam insulation in the Sandwich Panel

The most efficient and common materials on the market that define the composition of sandwich panels are the following:

Polyurethane (PUR) and Polyisocyanurate (PIR)

The rigid foams most frequently used in the production of sandwich panels are polyurethane/polyisocyanurate (PUR/PIR). These materials have a closed-cell composition, their structure is more homogeneous, with lower thermal conductivity and less capacity to absorb water, vapor, or humidity, unlike open-cell structures. In addition, these materials have a very interesting characteristic: they do not change their shape once they have been forged.

On the one hand, polyurethane is a thermosetting polymer, which means it cannot be reconfigured once heated. At Panel Sandwich Group, we use PUR foam in various types of panels due to the great insulating properties it provides. This thermal and acoustic insulating capacity is possible thanks to a density of 40 kg/m³ above the market average, which gives it a low coefficient of thermal conductivity. A relevant fact for the public that is overlooked is the lower density of this foam, the lower the stiffness, and the poorer the insulation.

On the other hand, polyisocyanurate, also known as PIR, is a variant of polyurethane but with greater fire resistance (capable of withstanding temperatures of up to 350ºC before decomposing, while PUR foams begin to fragment at 250ºC). Another characteristic of PIR foams is their ability to extinguish the fire without contributing to its propagation. Logically, its cost is slightly higher than PUR since it has a different composition with more expensive raw materials.

Both foams are used in many of the multi-panels available from Panel Sandwich Group, such as the Tile Roof, the Roofing Panel (Cover-joints Sandwich Panel, Sandwich Panel Three and Five Frets),and the Insulated Wall Panel (Insulated Internal Wall Panel, Outside Insulated Wall Panel Panel and Architectural Insulated Panel). Although both types of foam are used, polyurethane foam or PUR is the most demanded because it's low priced, while PIR is used when there are large manufacturing volumes. In the case of the Agricultural Metal Roofing and the False Ceiling Panel with Polyester or Pural Aluminum, both multi-panels are composed of a polyester sheet which is very useful to avoid corrosion from the animals' wind, but it is not fire resistant. Therefore, to low the cost, it is manufactured exclusively with PUR foam.

Rock Wool

The core of sandwich panels can also be composed of slabs of inorganic fibers that provide high fire resistance than rigid foams. Rock wool is a natural fiber used for acoustic insulation and fire protection. Its composition of natural fibers keeps the air dry inside and is a natural obstacle to heat transfer, slowing down the temperature changes from the outside to the inside, resulting in higher thermal insulation. In addition, rock wool has properties that stop sound waves, act as a barrier to sound, and provide acoustic insulation. In addition, its high density (from 100kg/m3 to 175kg/m3) makes it practically incombustible.

Thanks to the aforementioned characteristics, rock wool is the ideal solution for working in areas with fire or combustion risk or for spaces where soundproofing is required, reducing noise by 35 decibels when using its greater thickness. It is usually applied in Insulated Wall Panels or Insualted Ceiling Panels.

Polystyrene

It is a rigid plastic that is used in an infinity of products since its cost is very low. Besides this, it is a material that stands out for its high thermal insulation and strong resistance against filtrations and humidity.

In Panel Sandwich Group, we use this material in the SIP Panel since the adhesion of the PUR foam is weak to the wood and the polystyrene acts as a strong and stable adhesive.

What thickness to choose in the Sandwich Panel

In Panel Sandwich Group, we have extensive experience advising our customers. Over time we have detected that many of our customers repeatedly asked us the same question: What is the most suitable thickness for my project? If you have this concern, below you can find some basic notions on this topic to better orient yourself according to your project.

In the specific case of wanting to renovate or build a home, the most important thing is that the panel contains a high level of thermal insulation which in turn generates energy savings derived from it. For this type of case, the most advisable is to use a high thickness in the ceilings and a high thickness for the walls.

What type of thickness is most suitable for my home? It depends on the panel you want to use. If you want to modify the roof of your home, the Roof Tile Sandwich Panel is the most used for this type of project due to its aesthetic finish and high thermal insulation. The most common thickness is 55 mm with a white or imitation wood interior finish. If the Tile Panel does not adapt to the characteristics of your project, the Cover-joints Sandwich Panel is also in great demand and may fit perfectly, with 60 mm being the most common thickness in homes.

In the case of home walls, there are several options. If you would like to save money on your project, the best option is to install a Wall Panel with exposed screws, whose most commonly used thickness is 50 mm. If you are looking for an aesthetic look, the Architectural Insulated Panel with 50 mm or 60 mm thickness is sufficient. 

Another panel frequently used in this type of construction is the Wood Sandwich Panel. It is one of the most demanded and can be used for roofs and walls, being the most common at 40 and 80 mm.

If you are thinking of building a hut, shed, or warehouse in your garden or land, you may ask yourself, is it necessary to have a high thickness as in the previous case? Well, not really. This type of construction is not going to have a residential use and, therefore, does not need so much insulation, it is better to reduce costs by using a lower thickness.

For walls, the most interesting panels are the Insulated Internal Wall Panel. If you are looking for something low-cost and less aesthetic, the most suitable thickness for this type of project would be 30 mm. If, on the other hand, you are looking for something more aesthetic by hiding the screw, a Outside Insulated Wall Panel with a thickness of 35 mm would be the ideal choice.

If by any chance you are looking to build a car garage, as in the previous case, insulation is not so important; it is better to reduce operation costs by using low thicknesses.

For these constructions, it is common to combine Wall Panels with visible or hidden fasteners for the walls with Cover-joints Sandwich Panel and Sandwich Panel Three Frets or Five Frets. There is also the possibility of using the same wall panel for the whole construction if it does not have to support heavy weights.

One of the most recurrent works of our clients is the rustic porches of their homes. Depending on the panel chosen, the results will be very different. Residential porches only need roof panels. For this reason, the most commonly used are the sandwich panels and Tile Roofs, which can be imitation wood on the inside to give a superior aesthetically to the porch, an important facet in this type of construction. As in the previous cases, the porches do not need high thermal insulation, so a thickness of 50 mm in Tile and 30 mm in Cover-joints is enough.

If you are a businessman and looking to renovate an industrial building, this publication may solve your doubt: What is the most suitable thickness for my building? Well, it depends on the industry in which you operate.

If you operate in the agri-food sector and use your warehouses to store food products such as fruits, vegetables, meats, and others, the Cold Storage Panels for both ceiling and wall are ideal to fulfill this function. If we talk about thickness, this decision depends on many factors, from budget to refrigeration needs.

In case you need to maintain temperatures below zero, the ideal is the maximum thickness which is about 200 mm while if you do not need to maintain such extreme temperatures, 180 mm is enough.

Another situation that can occur is that you need a panel for a building without high requirements in terms of temperature and looking for protection, insulation, and humidity-free space to perform your operations. In this case, the most common is to install a roof panel and a wall panel in a thickness that is effective, easy, and quick to install at a reasonable price.

For the roof, the Cover-joints Sandwich Panel would be the most interesting. The most common thicknesses are 30 and 60 mm, although higher thicknesses can be chosen if greater strength is required. These panels can be combined with Insulated Wall Panels with thicknesses between 50 and 100 mm. Whatever the thickness of the panel, it will maintain excellent insulation that can increase as the thickness increases, so your choice will depend on the budget and the requirements of each project.

On the contrary, your project may be more related to a quality industrial building with thermal and acoustic insulation designed to work inside comfortably throughout the year. For these cases, it is advisable to use a three-frets sandwich panel with a thickness of 30 mm, although it can be greater depending on the geographical area in the United States in which you are located. It must be taken into account that these panels are used to avoid high temperatures in summer and too low in winter. These panels have enough thermal insulation to avoid humidity, condensation, and extreme temperatures throughout the year, always at the best price.

Regarding the walls, the most demanded is the 30 mm Insulated Internal Wall Panel as it insulates thermally from extreme temperatures, has enough body to withstand large spans between support points, and, being usually in white, they are clean and durable. As an alternative option, the Outside Insulated Wall Panel is also frequently requested. These panels are 35 mm thick, slightly thicker than the previous one. Both have similar characteristics with the exception that the latter is more aesthetically pleasing as the hardware is hidden.

Previously we have shown insulation and protection options provided by Cold Room Panels in buildings that require it. We have also explained the kind of panels that are needed to achieve adequate insulation for an industrial building that does not require these conditions. All these options are good, but perhaps you are only looking for a low-cost option for your development. Therefore, let's talk about galvanized sheets that adapt to more limited budgets and with lower thermal insulation requirements.

The Profiled Sheets without an insulating core have the following characteristic: this kind of sheets its incredible resistance to corrosion, which makes them ideal for farms and in covering warehouses and buildings. The thicknesses of these sheets range from 32 to 50 mm, with 32 mm being the most economical and in demand. Thanks to its easy installation, the different colors in which it is available, and its watertight characteristics that prevent leaks and humidity, it has become one of the most demanded options at a lower cost than the sandwich panel.

As mentioned before, these sheets are ideal for farms since they resist corrosion from harmful gases from cattle and pigs. This kind of panel is designed for chemical industries, farms, and corrosive environments and is called Agricultural Metal Roofing. What differentiates them from other sheets is that their bottom sheet is fiberglass-reinforced polyester. This part of the sheet makes the Agropanel resistant to corrosion caused by the gases inside.

The thicknesses will vary depending on the animal housed inside, being the most recommended 30 mm if the farm is for cattle or pigs, 40 mm for chickens, or 50 mm for open pools for fish farming.

The overall thought is to think if these panels will be used outside or inside the development. It is possible to install either sandwich panels with a reinforced polyester interior in case it is in contact with the exterior or a False Ceiling in case it is installed as a lining for an existing ceiling.

False Ceilings are used when you need to reinforce the interior without incurring high expenses. The False Roof of Polyester is characterized by the fact that both sides of the panel are made of polyester, giving it maximum protection and durability. In terms of insulation thickness, the usual thickness is 30 mm, since this type of panel is designed to cover pre-existing ceilings and walls, together with the air chamber formed when it is installed, is more than enough to easily obtain the temperature we want. But in cases such as chicken farming or where there is no pre-existing insulation, the ideal is to go up to 50 mm thick and compensate for the lack of insulation with the false ceiling.

If after this post you are still not sure which material to choose for your project, do not hesitate to contact us. To do so, you can fill out this form, call +1 904 512- or send a message by to the same number. You can also send us an , and one of our sales representatives will be happy to answer your questions.

A sandwich panel is a three-layer construction product consisting of two coloured galvanized steel sheets and core between them.

The technology of sandwich panels production appeared due to American architects Frank Lloyd Wright and Alden B.Dow, who were the first to use it in their projects. Already in , the American company Koppers Inc. started mass production of sandwich panels. The oldest sandwich panels manufacturers in Europe are the Finnish company Rannila now known under the Ruukki brand, the Irish company Kingspan, and the Italian company Cannon.

 

Sandwich panels possess good aesthetic properties, excellent energy saving characteristics, as well as can quickly assembled and thus are widely used for construction of trade and office buildings, prefabricated frame buildings, including warehouse complexes, industrial objects, and agricultural structures.

 

Type of sandwich panels

 

Depending on their use, sandwich panels are divided into wall and roof panels. In selection of wall sandwich panels, the key parameters are heat engineering, strength, and fire protection characteristics, while for roof panels, bearing capacity and long life are also of relevance.

 

Roof sandwich panels have to ensure full air-tightness and necessary roof strength, that is why it is recommended to use panels with special profile of external facing in the form of ridges.

 

Energy saving

 

The energy saving properties of sandwich panels are determined by the type of core, air-tightness of the lock and availability of seal in it.

 

A seal can be of butyl, installed at the time of panels installation, or EPDM (ethylene-propylene-diene-monomer) installed into panels&#; lock during production, which ensures better air-tightness and energy efficiency of the sandwich panel lock.

 

A critical sandwich panels&#; energy efficiency parameter is thermal resistance (R0), which takes account of heat losses in the lock part of the structure. The minimum reduced thermal resistance (at 25°C) for quality sandwich panels of leading European manufacturers is presented in the following table:

 

Panel thickness, mmThermal resistance R0, m2*K/WMineral woolFoamed polyurethane40&#;1,960&#;2,,13,,64,,15,,56,,17,,58,,09,0

 

Panels with thermal resistance below the mentioned parameters, are not recommended for usage in construction of energy efficient buildings.

 

Usage of modern cores, such as mineral wool and PIR, enable construction of buildings with even zero energy consumption. Construction of passive buildings and warehouses with regulated gas environment requires usage of technical solutions on sealing of all abutments, as well as application of sandwich panels with increased energy efficiency, allowing to almost completely exclude energy losses. A sandwich panels building structure can be considered energy efficiency, if its air-tightness comprises less than 1.5 m3/m2hour.

 

Sandwich panels with integrated photovoltaic modules (solar batteries) are the most innovational energy saving solutions.

 

Cores

 

The sandwich panel core (insulation layer) ensures such characteristics as durability, thermal and sound insulation, and fire protection properties.

 

Various types of cores are used in sandwich panels production; mineral wool, foamed polyurethane (PU, PUR) and its modification &#; polyisocyanurate foam (PIR, IPN), as well as foamed polystyrene (plastic foam) are the most widespread.

 

Panels filled with foamed plastic, possess the worst operational characteristics, therefore, as a rule, they are used for construction of temporary structures having useful life of up to 10 years and no fire protection requirements, because foamed plastic is combustible. Apart from that, foamed plastic has low sound attenuation and gives rise to mold spreading. The only advantage of foamed plastic sandwich panels is their low price.

 

Being the most widespread material, mineral wool is always used in sandwich panels with increased fire rating requirements (up to EI360), for instance, in fireproof partitions. The mineral wool U-value varies within the range of λ=0.038-0.044 W/mK. Depending on the necessary characteristics, mineral wool of various density is used in the sandwich panels structure: low density (less than 90 kg/m3) &#; for internal partitions, medium density (95-115 kg/m3) &#;  for external walls and roof panels, or increased density (120 kg/m3 and more) &#; for fireproof partitions and wall panels having increased bearing capacity. The mineral wool characteristics have caused wide usage of sandwich panels with such a core in construction of warehouses for combustible materials, fire-hazardous productions, as well as buildings with increased acoustic requirements.

 

Sandwich panels from foamed polyurethane are convenient in installation due to their small weight (in most cases, foamed polyurethane density in panels comprises from 32 to 40 kg/m3) and possess higher energy saving characteristics (λ=0.020-0.021 W/mK) compared to mineral wool.

Foamed polyurethane does not absorb moisture and thus can be successfully used in panels for carwashes, swimming-pools, productions with increased humidity (malt houses of breweries, mushroom farms etc.), as well as objects located close to bodies of water.

 

Sandwich panels with foamed polyurethane core are used at objects with low fire safety requirements, as well as at cold storages (refrigerators and freezers, including with regulated gas environment). In this case, polypropylene inserts have to be used on panel fixings to prevent from cold bridging and reduce heat losses.

 

It is worth noting that foamed polyurethane belongs to combustible materials (G1 combustibility group) and is flammable (M1-M1 group), while fire rating of sandwich panels with foamed polyurethane core is EI15.

 

Foamed polyisocyanurate (PIR) represents a new generation of polyurethane core (λ=0.020-0.021 W/mK) with fire rating up to EI45. E-PIR type foamed polyisocyanurate core has EI15-EI30 fire rating, while X-PIR &#; up to EI45.

 

With competitive price and timely delivery, Wiskind New Materials sincerely hope to be your supplier and partner.

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IPN is a trademark of modified foamed polyurethane (λ=0.020-0.022 W/mK) used in Kingspan sandwich panels. In this case, IPN according to its characteristics more corresponds to X-PIR type, while IPN-L is close to E-PIR. A drawback of IPN is the absence of this type of core among those recommended in the European standard DSTU EN , which complicates confirmation of quality characteristics for products with such core and does not guarantee its long life.

 

Architectural expression

 

The range of sandwich panels represented at the Ukrainian market, provides almost endless possibilities of creation of unique architecture. Rich colour solutions, variations in installation direction, a variety of types of profiles and décor enable an architect to use sandwich panels not only as structural, but also a design element of a building.

 

Sandwich panels with polymer-coated steel facing can have standard (always available by manufacturers in their warehouses) and bespoke colours. The range of possible colour shades of panels is determined according to the RAL, RR, or NCS international colour standards.

 

Due to the complexity of technological processes, manufacturers of steel with an organic coating in metallic colors RAL and RAL do not guarantee the compatibility of color tones in future deliveries. Therefore, in order to ensure the uniformity of the color of sandwich panels, it is recommended to order the production of raw materials of the same color for the entire intended batch of products.

 

When selecting the colour of a sandwich panel, it is necessary to take account of the ability of metal having various colours to heat and expand, because this largely determines the long life and aesthetic characteristics of panels. The darker the colour is, the more the external facing is heated, therefore dark colours are not recommended for use on the roof, where panels would be heated stronger by the sun and might become wavy, while the facing can peel off from the core. It is also not recommended to install dark sandwich panels on the southern façade, because there panels can get bent, thus creating waves, especially if panels are over 6 m long.

 

The DSTU EN standard, which describes the requirements for sandwich panels, divides the colors of the cladding into 3 groups: very light, light and dark. The value of the outer skin temperature is set based on the group to which the color belongs and is +55 °C for very light colors, +65 °C for light colors and +80 °C for dark colors.

 

Color groups according to the influence of thermal loads on structures made of sandwich panels.

I color group &#; very light colorsRAL: , , , , , , , II color group &#; light colorsRAL: , , , , , , , , , , , , , , , , , , , , , , , , ,
RR: 20, 21, 24, 30, 40III color group &#; dark colorsRAL: , , , , , , , , , , , , , , , , , , , , , , , , , , ,
RR: 22, 23, 29, 34, 35, 36, 41, 288

 

The outer sheathing of sandwich panels of dark colors (III color group) may be subject to distortion due to the increased thermal load compared to light colors. Therefore, when designing houses made of sandwich panels, it is necessary to take into account the features of dark panels and prevent damage using solutions based on the following conditions:

1. Select the mounting method and static system according to the recommendations provided in the TrayPan calculation software.
2. Reduce the maximum length of sandwich panels.
3. Consider the temperature when installing sandwich panels.

 

There exist several types of profiles of sandwich panel facing: microprofile, linear, corrugated, smooth, stamped, and sinusoid. Due to technical peculiarities of production, smooth and sinusoid surfaces are possible only for panels with foamed polyurethane core. For premises where it is necessary to exclude dust accumulation or where frequent washing is planned, panels with smooth or microprofile surfaces should be used for convenience.

 

Sandwich panels with smooth cladding should only be installed as single-span structures after static calculations using TrayPan software. The use of sandwich panels with smooth skins in other structures can lead to the appearance of waviness on the front surface. This can be a barely noticeable effect, visible only under certain conditions, for example, with very high insolation of a wall or roof structure.

 

The possible appearance of waviness on a smooth cladding does not impair the load-bearing capacity of sandwich panels, but may lead to deterioration of the aesthetics of the facade.

 

Sandwich panels can be installed horizontally, vertically or at a slope. It is allowed to use sandwich panels even for erection of curved walls, if the curve radius comprises 30 m or more. For even accommodation of panels deformation, it is recommended to install them in one span.

 

A series of leading sandwich panels manufacturers offer additional possibilities for their decoration, such as application of any colour images onto the surface of panels, or installation of ventilated façades with decorative lining above sandwich panels.

 

Apart from the external facing, visual perception of panels is also influenced by the fixing, which can be visible or hidden, as well as joint and framing elements, battens, special corner sandwich panels etc. Such seemingly insignificant details are decisive in the façade architecture of a series of objects. Therefore, if it is necessary to create an expressive building design, involvement of experienced specialists into project development is recommended.

 

Facing materials

 

The optimal choice of external facing material of sandwich panels is polymer-coated galvanized steel, ensuring long life and preservation of operational characteristics of a product.

 

Prior to purchasing sandwich panels, it is worth paying attention to the steel facing characteristics. Under DSTU EN , S280, S320, S350 structural steel grades with flow limit 280-350 MPa can be used for manufacturing sandwich panels. In spite of that, to reduce the price, many producers use DX51 steel grade, which is not structural and thus not acceptable for non-bearing sandwich panels.

 

The same standard determines the need to use galvanized steel with zinc content not less than 190 g/m2. In this case, the zinc coating thickness from the external side shall be at least 20 microns, while the polyester layer shall be at least 25 µm thick.

 

Under DSTU EN , the sandwich panels external facing thickness can be from 0.4 to 0.7 mm. In this case, the thicker a steel sheet is, the smoother the façade surface will look and the less glitter it will have in sunny weather. The internal facing layer is usually within 0.4 to 0.6 mm and affects the long life and bearing capacity of sandwich panels.

 

Depending on the use and operation conditions of panels, several types of polymer coatings are distinguished, of which the most widespread are:

 

• Polyester (PE) &#; the standard coating for most buildings without specific requirements.
• Polyvinylchloride (PVC) &#; the only film coating among the presented coating types, used in buildings with increased humidity, in food and pharmaceutical industries, in aggressive conditions under influence of washing and abrasive detergents.
• Pural polyurethane &#; apart from the characteristics of polyvinylchloride, it is also highly resistant against corrosion, mechanical damages, and influence of high concentrations of chemically active substances.
• Pural Farm (CSafe) polyurethane &#; the most stable coating, distinguished with increased resistance against abrasion, influence of aggressive environment, fading, as well as influence of ammonia group chemical compounds and sodium hydroxide. Due to its high resistance, such coating is most frequently used for agricultural objects.
• PVDF (Hiarc) polyvinyldifluoride &#; coating resistant to fading, which preserves its saturated colours in the course of time and is therefore recommended for façades of buildings located in areas of increased solar activity.

 

In special cases, for instance, when the atmosphere inside the building is very aggressive due to influence of washing and abrasive detergents, as well as in pharmaceutical and food industries, it is recommended to use sandwich panels facing from stainless steel. Such a solution is the most expensive however the only possible one in certain cases.

 

Bearing capacity

Bearing capacity of a sandwich panel is an important characteristic, because in the course of operation panels are exposed to influence of snow, wind, seismic activity etc. When designing building envelopes using sandwich panels, it is necessary to take account of the requirements of DBN V.1.2-2 &#;Loads and Impacts&#;. For instance, for construction of the same building in various regions, the values of wind and snow loads can differ several times. It is also necessary to take account of the structural peculiarities, service loads, as well as the conditions of the building operation. For example, in addition to snow load, a roof has to withstand a person with a cleaning tool.

 

When wall sandwich panels are used in high-rise buildings, special attention can be paid to selection of fixings and number of fixing points.

 

In projects, where an explosive situation is possible, light removable structures need to be used. In such structures, sandwich panels with special types of fixings are applied, which ensure decompression of certain parts of the façade in case of internal pressure increase. This allows avoiding injuries to people, who are inside the premises and near the object, as well as damage to the building structures.

 

The necessary characteristics of sandwich panels are selected according to the bearing capacity tables and with the help of calculation software, therefore prior to purchasing, one should find out whether the supplier has such software.

 

Geometrical parameters

 

The sandwich panel thickness is selected based on the heat engineering calculation and can be within 40 to 300 mm, and its width is from 1.0 to 1.2 m. The panel length can be from 2 to 13.5 m and is limited by transportation possibilities. Based on convenience of installation, 6-8 m long panels are the most widespread.

 

Sandwich panels can be supplied with flat or zig-zag lock. Flat locks can cause condensate and through freezing. In its turn, the mortice and tenon zig-zag lock is more air-tight and energy efficient.

 

It is important to consider that precise geometrical characteristics of sandwich panels substantially affect the air-tight matching of locks, as well as the timing and quality of installation. In spite of the broad range of sandwich panels brands at the Ukrainian market, only a few manufacturers can guarantee that during installation, deviation from geometrical dimensions will be within the tolerances specified in DSTU EN . This is caused by the fact that manufacturing products with precise geometrical parameters requires high-quality automated equipment, which only leading European manufacturers have.

 

Required documentation and supplements

Before buying sandwich panels, you have to make sure that the supplier has a declaration of performance of building products, which is a mandatory document in accordance with Regulation (EU) &#; 305, which has been in force in Ukraine since January 1, . The sandwich panels sales without a declaration of performance, but only with old-style supporting documents (certificate of conformity, technical conditions, etc.) is permitted under Ukrainian law only until the end of .

 

The main standard in Ukraine for supplying sandwich panels is DSTU EN , which regulates the main characteristics of products and contains references to auxiliary standards according to which the manufacturer have to test the declared parameters.

 

Although the availability of a declaration of conformity is the only mandatory document for the sale of sandwich panels in Ukraine, the supplier may additionally provide other documents and services that allow the consumer to obtain extended information about product quality, simplify calculation & design, and reduce the cost of insurance for the facility:

 

According to DSTU V.2.7-169, the warranty period has to be at least 1 year. It is worth noting that leading manufacturers provide a sandwich panels guarantee for up to 5 years &#; for the integrity of the product, up to 25 years &#; for the effective operation of the core and up to 30 years &#; for the aesthetic properties of the facing.

 

When using sandwich panels in construction in areas of increased seismic activity, it is recommended to request a protocol on seismic resistance from the supplier.

 

For complete confidence in the quality of the supplied panels, it is also necessary to request separate certificates and protocols for the materials that were used in the production of a particular batch of panels: steel, core and glue.

 

Accessories and assembly

 

Before buying sandwich panels, it is important to know that even the best products, when using low-quality accessories or improper installation, are unlikely to last the declared period by the manufacturer. The choice of fixings, seals, battens, and rails, like the choice of sandwich panels themselves, has to be based on qualitative characteristics of products, peculiarities of a specific type of panels, and the manufacturer&#;s recommendations.

 

In spite of the seeming ease, sandwich panels installation is a rather complicated and responsible stage, which all subsequent operational costs and building useful life depend on. Therefore it is recommended to commission sandwich panels installation to experienced specialized construction companies, which are able to confirm their experience with the relevant warranty.

 

When storing mineral wool sandwich panels in the open air, the core can absorb moisture, as a result the thermal performance of the products can deteriorate significantly. To prevent the joint parts of sandwich panels from getting wet, the Finnish manufacturer Ruukki offers Rain Protect technology, which protects the insulation from rain during storage and maintains the panels quality.

 

Manufacturers

 

Inexpensive sandwich panels with the lowest requirements to quality and long life, are represented in Ukraine by a broad list of brands, from which one can distinguish AluTherm, Arsenal, Asten, Pantech, Promstan, Cualimetal, Gor Stal, Izovol, Paneltech.

 

The medium price segment is filled with products by Adamietz, Arcelor, Balex, Isopan, Joris, Metecno, Pruszynski, USP, Inteco, Thermo-bud, TPK.

 

Sandwich panels of the highest quality in Ukraine, meeting the DSTU EN European quality standard, are represented by only two brands &#; Kingspan and Ruukki.

 

One should remember that the sandwich panels price means not only funds initially spent for manufacturing and installation. Purchasing better quality products, the building owner not only receives excellent appearance and safety of a building, but can recover the funds spent due to reduction of costs for heating and air conditioning, as well as due to absence of problems with operation of the roof and façades throughout the whole useful life of a building.

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