Hongtai sandwich panel color series include polystyrene sandwich panel, rock wool sandwich panel, fiber glass sandwich panel, PU Fireproof and waterproof panel. These materials can play a very good role in thermal insulation, heat insulation and ... Read More
A sandwich panel is a product used to clad the walls and roofs of buildings. Each panel comprises a core of thermoinsulating material, skinned on both sides with sheet metal. Sandwich panels are not structural materials but curtain materials. The structural forces are carried by the steel framework or other carrier frame to which the sandwich panels are attached.
The types of sandwich panel are generally grouped by the thermoinsulating material used as the core. Sandwich panels with cores of EPS (expanded polystyrene), mineral wool and polyurethane (PIR, or polyisocyanurate) are all readily available.
The materials mainly vary in their thermal insulating performance, sound insulating performance, reaction to fire and weight.
The comparison in this area includes the costs of construction materials, labour and shipping.
A building of the same volume utilising stud partitions takes just 1 month to complete.
The construction time is business-critical. The sooner a production building or warehouse is commissioned for use, the sooner a return on the investment can be achieved.
Stud partition buildings are assembled rather than “built”. The finished structural parts and cladding components arrive on site, and are then assembled like a house of toy bricks. Another plus is that there is no need to wait for the building shell to lose excess moisture.
Traditional masonry construction uses ‘wet processes’, which require significant amounts of water to make the mortar for bricklaying, concrete for casting or the plaster for rendering.
Some sectors of industry, like wood processing or pharmaceutical manufacture, require fixed and controlled relative humidity levels, which preclude wet construction processes.
The pricing begins at 55–60 PLN/m2 for thin EPS-core sandwich panels. The most popular PIR-core sandwich panels are 100 mm thick, and cost about 80–90 PLN/m2.
Customers often ask about the VAT rate for sandwich panels. In Poland, all construction materials, including sandwich panels, have a 23% VAT rate.
It is best to order your sandwich panels directly from the manufacturer or through their distribution chain. You can request Balex Metal's regional sales representatives to visit your site for professional advice concerning the best processes and materials. Having examined your requirements, the sales representative can quickly supply you with a custom quote. Customer care by the sales representatives aside, you can get support from Balex Metal's design engineers or technical consultants at every stage of project delivery.
The steps to install wall and roof sandwich panels are as follows:
1. The construction materials are delivered to the site: the delivery includes sandwich panels, the subframe components (cold-formed shapes), and accessories (including flashing, fasteners, gaskets, seals, etc.). Balex Metal can provide all the components required to complete the installation process.
2. The materials delivered by the carrier are unloaded with construction handling equipment.
3. The subframes are assembled, and installed with beams, posts and purlins.
4. The protective film is removed from the sandwich panels.
5. The sandwich panels are fastened to the subframe structural members using suitable fasteners.
6. The joints between the sandwich panels are sealed and the flashing is installed.
How many screws do I need to fasten a sandwich panel? This is the most common question from customers at the project preparation stage. A rough estimate is 1.1 fasteners per square metre of sandwich panels. The actual number, spacing and layout depend on the decision of the project design engineer and/or the construction material supplier.
Any type of sandwich panel will do as cladding for walls and roofs. Depending on the project needs, the cladding may include:
EPS-core sandwich panels (the budget option);
Mineral wool core sandwich panels (for structures with improved resistance to fire);
PIR-core sandwich panels (whenever good thermal insulation parameters are essential).
Sandwich panels can be utilised in all structure types. Your imagination is the limit. However, while sandwich panels are generally used in industrial applications, some housing projects also use stud partitions and sandwich panels.
Given the short installation time and large unit coverage, sandwich panels are most popular in constructing:
Cold stores and freezers
Sandwich panels can be combined with other structural solutions. A popular option is to install the panels as external cladding for the outer walls of shopping malls, including sandwich-layered roofing structures: box profile sheets, thermal insulation (e.g. Thermano PIR-core sandwich panels), and a waterproof membrane.
Composite cladding systems have been in use for a considerable time, in particular for the manufacture of vehicles such as trains and planes, but the development of advanced sandwich panels for cladding buildings first began in the 1930’s, when they were researched by organisations such as the Forest Products Laboratory, and used by architects including Frank Lloyd Wright. They went on to become increasingly popular following the second world war.Modern sandwich panels can be flat, bent, curved and joined together in an almost unlimited range of configurations and are available in a wide variety of colours, finishes, thicknesses, edge details and profiles depending on performance requirements.
They are generally fabricated off-site and are particularly useful where a high-performance cladding is required, with good structural strength, a high level of insulation and low weight.
Building types that commonly feature sandwich panels include:
Industrial buildings and processing plants.
Hot-dip galvanized steel sheet.
Glass fibre reinforced polypropylene.
Poly vinyl chloride (PVC).
Magnesium oxide board (MgO).
Oriented strand board (OSB).
Glass reinforced plastic (GRP).
Extruded polystyrene (XPS).
Mineral wool (rock fibre) (MWRF).
Modified Phenolic foam (MPHEN).
Folded metal, paper, aramid and carbon fibres. See Foldcore for more information.
Honeycomb materials (such as Polypropylene).