Rooflighting Product comparisons
The most widely used rooflight materials are glass-reinforced polyester (GRP, or fibreglass), safety glass, acrylic (also known as Plexiglas or Perspex), polycarbonate (PC) and, to a lesser extent, PVC.
Each product has its own advantages and disadvantages:
|Product||Environmental Friendliness||Scratch/Chip Resistant||Impact strength||Light transmission||UV degradation||Applications|
|Glass||Fair(energy consumption, heavy to transport)||Excellent||Poor (is a safety hazard)||Excellent, but lets through harmful UV rays||None||Skylights in homes, windows, architectural applications|
|Acrylic||Good||Less likely to scratch||More likely to chip, less impact resistance then Polycarbonate. (still 10-24 times more resistant than glass)||Better clarity and can be restored to optical clarity.||Does not yellow||Skylights, cladding, signage, shelving, architectural applications, fish tanks|
|Polycarbonate||Excellent||Impact/chip resistance is much higher with Polycarbonate.||Highest||Diffuses Light||Yellows over time||Rooflights in warehouse/homes; greenhouses, farms, mining, commercial applications|
|PVC||Poor||Low||Low compared to other thermosets||Diffuses Light||Yellows over time||Low-cost housing, lean-to’s, noncommercial/ industrial applications|