What type of material are the shade and retention curtains made of?
Covering materials for shade and heat retention include knitted white polyester, non-woven bonded white polyester fiber, and composite fabrics manufactured specifically for use in greenhouse curtain systems. The white polyester fabrics offer excellent durability. White polyester has largely been superceded by composite fabrics made of alternation strips of clear and aluminized polyester or acrylic held together with a finely woven mesh of threads. These panels outperform white polyester because their aluminized strips reflect infrared light out of the greenhouse during the day, and back into it at night. The composite fabrics include; chemical stabilization against breakdown by UV light, flame resistant fabrics to meet building code requirements, and fabrics where the clear strips are omitted, leaving gaps for air circulation.
