Optical Properties Of Polycarbonate Roofing And Its Fireproofness
Optical properties of polycarbonate roofing
The light permeability of the clear not colored polycarbonate panel is between 50% and 90% (pure glass has 90% - 95%).
Any coloring decreases the ability of polycarbonate to transmit the light through.
All polycarbonate roof panels transmit large part of visible and also infrared spectre.
The UV stability of polycarbonate roofing
Majority of plastic materials degrades over the time being exposed to ultraviolet radiation. To avoid such material degradation the polycarbonate roof panels are treated with UV filters (from the upper side only or from both sides).
If the UV filter was applied only from one side, this side is usually covered with protection foil and it is necessary to install the roofing panels with this side up.
Fireproofness of the polycarbonate roofing panels
Compared to another plastic materials, polycarbonate offers rather high fire resistance.
It is hardly combustible (burns 40 mm/min) and when burning it doesnīt drip.
