Light plate

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Light panels are transparent panels made of plastic that are used in roofs to bring daylight into the rooms below. Tried and tested materials for light panels are PVC , polycarbonate , PMMA ; Recently, sheets made of PET or polypropylene have also been offered, but have not yet caught on. The competition for the light panels made of plastic is glass , which is again pushing itself into the foreground due to its clarity, strength and durability and the sharp drop in price.

The light panels are differentiated:

  • according to the type of plastic they are made of (" polyester ", "PVC polyvinyl chloride ", "PC polycarbonate ", " acrylic ")
  • according to the number of layers of plastic they are made of ("single-shell", "multi-shell"),
  • according to their respective transparency ("clear glass", "crystal", "transparent natural", "milky", "smoke-colored", "opaque"),
  • after their surface protection against UV radiation ("UV-stabilized")
  • according to their hail resistance ("40 mm in the Swiss test")
  • according to their temperature resistance ("Vicat point 81 ° C")
  • according to their chemical resistance ("resistant to diesel fuel")
  • according to their building material class (for example "B1")
  • according to their classification as a construction product ("building authority approval")
  • according to their thermal insulation properties ("k-value 1.6")

Areas of application for light panels are hall roofs made of metal or fiber cement panels , in private areas verandas and winter gardens . In horticulture , light panels are being replaced more and more by foils as roofing material, which are much cheaper, even if they are changed several times.

The shape of light panels is usually corrugated in order to increase stability against wind and snow loads. By far the most popular profile is a small trapezoid (“70/18”, “Sheet pile wall profile”, “Greca”). Professional profiles match the profiles of sheet steel or aluminum manufacturers and are characterized by a larger span between the purlins ; For example, "Fischer 50/250", a profile that was developed by the sheet steel manufacturer Fischer and, thanks to its high bead, enables a large purlin spacing.