• What does polyester, PVC and polycarbonate mean?
• What is the difference between a bituminous membrane and a breathing membrane?
• What is the difference between light transmission and lightning?
• What is the difference between single-skin and double-skin?
• What does transparent, crystal and Opal mean?
• What is the difference between illumination and lighting?
• What is the difference between Reaction to fire and external fire resistance?
• What is cladding?