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Europanels sandwich panel with metal cladding and PU core consists of rigid polyurethane foam permanently bonded to steel outer and inner cladding by autoadhesion.
Compared to panels with an EPS polystyrene core, polyurethane panels are characterized by greater rigidity, better thermal insulation (for a similar effect, it can be assumed that a PU board can be 2 times thinner than EPS) and the possibility of using more interesting (deeper) profiling.
Europanels metal-clad sandwich panel consists of a structural-insulating core permanently bonded to an exterior and interior steel cladding. In the case of panels with an EPS polystyrene core, the core is glued to the cladding with a special polyurethane-based adhesive. In this case, we speak of core discontinuity. In contrast, PU polyurethane core panels are characterized by core continuity (physical, thermal continuity), since the core is both an insulating and adhesive element (adhesion to the cladding).
In order to achieve maximum usability and satisfaction with the use of Europanels sandwich panels on a facility, it is necessary to take into account, among other things:
Europanels sandwich panels with metal facings are used as finished elements of roofs (roof coverings) and structures of external and internal walls, as well as suspended ceilings in objects of various purposes: agricultural, industrial, commercial (stores, supermarkets, hypermarkets, etc.), logistics, storage, distribution, sports and recreation, public utilities, etc. Thanks to the factory production, the characteristic of Europanels sandwich panels is the dimensional accuracy and the fit of the elements (panel joint). In this way, objects made of Europanels sandwich panels are not only aesthetically pleasing and functional, but also durable and energy-efficient.
The main use of Europanels sandwich panels is for buildings that are to be built quickly and meet the exact characteristics arising from the purpose of the building and the technical requirements for a particular building. Due to the speed of installation and favorable coverage widths, objects realized with Europanels sandwich panels can be finished in a very short time and with minimal expenditure.
The main differences between the performance of Europanels panels with metal facings and PU core compared to EPS are due to the properties of the structural-insulation core used. Europanels panels with PU core, compared to EPS panels, have:
It should be remembered that panels with an EPS core, compared to PU panels, react differently to temperature factors associated with sunlight. Due to the thermal expansion of the cladding and the discontinuity of the core, one section of EPS board should not be longer than 7m. If a given dimension of the roof or wall slope exceeds 7m, connect EPS panels along their length using expansion joints.
Europanels sandwich panel with metal cladding and EPS core consists of EPS sheets (blocks) permanently bonded to the outer and inner cladding through a high-temperature polyurethane adhesive process.
The polystyrene blocks that make up the core are given as a whole, i.e. they are dimensionally prepared in advance for the thickness of the panel and its modular width. Due to the limitation of the length of the block (we use 3m blocks), there is a need to connect the blocks to each other along the length. To ensure the required rigidity, the joints of the blocks are milled.
A characteristic feature of EPS-core sandwich panels is the lack of continuity of the core in the thermal aspect (in the thickness of the panel we have both the polystyrene foam and the adhesive layer) and the physical aspect (the bonding of the blocks). However, EPS panels are relatively lightweight and much cheaper than panels using other types of cores used in sandwich panels (polyurethanes, mineral wool).
The physics of building structures shows that the sun operates most on southern walls.
In comparison, eastern walls are slightly less exposed to this impact, western walls even less, and northern walls are almost not exposed at all to thermal loads from solar radiation.
This is important for the behavior of sandwich panels on the facility, since this material is made, among other things. made of steel, which under the influence of heat released due to solar activity, expands and contracts in a temperature fucktion.
This is an objective physical phenomenon that occurs in nature, and it is for this reason that, for example, railroad or streetcar tracks are laid with dilatation, a distance that compensates for the work of the material under the influence of thermal cycles.
In sandwich panels, bright colors are recommended for south walls, and in the case of EPS core, an additional expansion joint is recommended if the length of one panel exceeds 7m. Each time, the architect/designer determines the loads specific to the object, including thermal loads. Therefore, when selecting materials, it is necessary to use the technical data from the design of the building and the material (board).
Sandwich panels attached to a structure are subjected to constant weathering. As a result, they can be said to work on the structure.
A measure of the resistance of panels to wind is the deflection of sandwich panels on the structure under the pressure and suction of wind. It is essential that these deflections are limited to those that will not cause damage to the entire structure, such as cracking of the panel or the formation of leaks. The stiffer the slab and the denser its support, the more resistant the structure is to wind gusts, the force of rain and the load of lingering snow (applies to roof slabs). These parameters are made visible in the strength tables, which are developed individually for each type, type and thickness of panels in the Europanels range.
Also very important is what is determined by the characteristic load, i.e. the design assumptions, the location of the building in relation to the sides of the world and the snow load zones and wind speeds. Also important is the color of the cladding and its belonging to one of the three color groups (it is all about the heating of the cladding when exposed to sunlight).
The selection of a particular type of panel for a building is a complex matter. The building is exposed to changing weather conditions, so in addition to using full technical data, it is so important to use the entire Europanels lightweight cladding system, which includes, among other things, flashings, fasteners or mounting accessories.
Producing a smooth plate in principle is not a major technological problem, as long as this smoothness is within some tolerance. For Europanels sandwich panels it is L = 0.6 / 1.0 / 1.5mm for 200 / 400 / >700mm.
For a satisfactory result, it should be remembered that the standard thickness of 0.5mm steel cladding is insufficient and thicker cladding, such as 0.7mm, should be used.
However, manufacturing and technology is one thing, and the life cycle of a building is something more complex. While the sandwich panel can leave the EuroPanels factory in the desired smoothness, while working on the building it is subjected to cycles of stress due to changes in external temperature (day/night cycles give up to 80 degrees C daily difference!). As a result, small surface ripples may appear on the surface. However, this is natural, and even with regard to walls made with masonry technology, it is not possible to speak of obtaining the effect of complete smoothness. The possible visibility of the irregularities depends on the play of light and the viewing angle.
Europanels sandwich panel is a construction product and should be treated as such.
An indispensable complement to sandwich panels are installation accessories available in Europanels offer. Among them are a number of finishing elements, fasteners, sealing materials, etc.
First, the panel must be fixed to the structure. This is done with the appropriate approved screws, which are tested and matched by us.
Secondly, both wall and roof sandwich panels cannot be left on the structure unprotected. The flashings not only emphasize the visual effect of the object, but most importantly protect the open elements of the panels (the visible core at the edge) from the weather (drainage, protection from the sun, wind, etc.).
The technical solutions designed by our specialists and the selection of appropriate materials guarantee a complete fit of the components. The use of non-original accessories than those offered by Europanels is not recommended, as it does not give you a sense of security.
The U-factor is the primary parameter for assessing the thermal insulation of a building. Determines the amount of heat that is able to pass through the partition. It is this coefficient that is used by the Technical Conditions, which imposed that from January 1 this year. U for walls can not be higher than 0.25 and for roofs 0.2 W/m2K.
The lower the U-factor, the warmer the partition.
The U-factor depends on thermal resistance and is calculated from the relationship:
U = 1/R
R – thermal resistance
The thermal resistance R depends on the type of material and its thickness. The higher the thermal resistance, the warmer the partition (it is a better insulator). Thermal resistance is calculated from the formula d/λ.
d – thickness of the partition (given in meters)
λ – coefficient. thermal conductivity
The thermal conductivity coefficient λ is a physical property of any material and does not depend on its thickness. The smaller the λ, the better insulator the material is.
λd – declared thermal conductivity coefficient. Is the value after laboratory tests with the aging process.
For newly built facilities, EuroPanels has a range of energy-saving panels with PUR and EPS core. A building properly designed and constructed with EuroPanels sandwich panels, can significantly reduce the cost of its subsequent maintenance. The lower the U-factor, the proportionally lower the heating costs.
As for existing facilities, EuroPanels has developed products specifically for thermal upgrades. By calculating the U-factor for an already existing building, it is possible to determine how much heat loss can be reduced by applying additional insulation to exterior walls and roofs. An additional benefit is the increased sound insulation of the building.
Keep in mind that heat loss through the exterior walls of, for example, a single-family home can be as high as 35%, and through the roof heat loss is estimated to be at least 25%. That’s why it’s so important to use modern and energy-efficient building materials, among which one of the most interesting offerings are sandwich panels for wall and roof structures and thermal insulation products from the EuroPanels collection.
The combustibility or noncombustibility of building materials can be easily known, because the classification of their reaction to fire, the so-called. Euroclass, can be found in the technical specifications. This is mandatory information accompanying the CE marking.
Most building materials, including virtually all thermal insulation, have such labeling. The Euroclass designation consists of a basic class from A1 (the best) through A2, B, C, D, E or F, plus two supplementary classes: s (1, 2 or 3) and d (0, 1 or 2).
For example, A1 – says that the material is completely non-flammable, A2 – almost non-flammable, and successive classes from B to F indicate an increasing degree of flammability of the product. Practically, products of classes B to F ignite, with the lower the class (closer to F), the faster this happens and under the influence of an increasingly smaller flame. In addition, the more flammable a product is, the more energy it gives off during combustion. Thus, it increases the fire and contributes to faster fire development.
Supplementary classification s refers to the generation of smoke, which, along with flames and temperature, is an important hazard factor and contributes to the greatest number of fire casualties. It determines the amount and rate of smoke production by the burning product: s1 – little, s2 – medium, s3 – a lot.
Supplementary classification d applies to materials outside class A1 and assesses the possibility of the formation of flaming droplets and waste, which can cause further spread of the fire and impede evacuation: d0 means that the product does not produce flaming droplets, d1 – that there are few, d2 that there are many and they are persistent.
Europanels sandwich panels have very good parameters of reaction to fire: B-s2,d0, which places them among the leading products of this type on the market.
Europanels sandwich panel is a modern composite building product consisting of a structural-insulating core and two steel facings. The product is designed for use on roofs, exterior and interior walls and suspended ceilings in lightweight housing technology. This technology involves erecting a support structure, to which wall and roof sandwich panels are attached with fasteners (screws). The product feature and also the slogan of Europanels is “insulation and façade” – a combination of the most important features that any modern wall and roof must meet.
Europanels sandwich panels are an example of the use of the latest technologies to support energy-efficient construction.
The panels are available in a variety of colors, with white being the most common color for roofs due to sunlight. For finishing, system accessory elements are used to close (cover) the cross sections of the panels. The accessories are available in interesting colors that can contrast with the color scheme of the panels and provide a distinctive element of building facades, highlighting, for example, corporate colors.
As of July 1, 2013, new regulations apply to the way building materials are marketed – Regulation (EU) No. 305/2011 of the European Parliament and of the Council of March 9, 2011. establishes harmonized conditions for the marketing of construction products and repeals Council Directive 89/106/EEC.
As a result of the change in legislation, manufacturers of construction materials have replaced Declarations of Conformity, the so-called. DoC (from Declaration of Conformity) new Declarations of Performance, so called. DoP (from Declaration of Performance).
The declaration of performance must contain the following information:
