How can polycarbonate sheets be mounted?

One of the differences between polycarbonate and glass, is that polycarbonate expands/shrinks more under the influence of temperature (which is typical for all plastic sheets). The coefficient of thermal expansion (_) for polycarbonate is 0.065 mm/m °C. Let's suppose you have to install a sheet in an area where the temperature difference between the hottest day in summer and coldest day in winter is 55°C. This means that the difference in dimensions of the sheet will vary by 55 x 0.065 = 3.575 mm per metre sheet length/width. This difference must be absorbed by the system used to mount the sheets. In most cases, polycarbonate sheets are clamped in aluminium glazing bars, which typically have a rabbet depth of 20 mm, and which allow for some movement of the sheet within the glazing system. Other types of glazing systems can of course also be used, as long as they take this expansion into account. In case of doubt, you can refer to the technical documentation of one of the sheet suppliers.