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Insulation foam can be made of rock wool, polystyrene and polyurethane, which due to the advantages of polyurethane foam usually uses and uses polyurethane foam panels. Common. One of the main benefits of polyurethane foam insulation (panel) (which consists of ceiling sandwich, wall) is the refractory, burning, lightness, high resistance and well -insulated insulation, which at the price. And the popularity of the sandwich panel and the refrigerator and poultry sandwich has been effective.
Solving problems such as long run time, useful life and high cost of building implementation requires solutions to use new methods and new building materials to lose weight and reduce time Construction is a longer durability and ultimately reduced the cost of sandwich panel implementation. Spending is one of the new topics in building science that is expanding day by day.
Sheet is a thin layer that may consist of different materials that have extensive uses, one of its applications in the sandwich panel. . The sheet is used in the sandwich panel in the outer layer of the panel, which is in direct contact with the environment, so they must have unique features. One of the most widely used sheets used in panels is galvanized sheet, al -Azink, aluminum.