Greenhouse covers are used in cold weather by providing insulation, retaining heat, and protecting plants from harsh external conditions. Materials like double-layered polycarbonate or polyethylene trap warmth inside while allowing sufficient sunlight to reach plants. Covers reduce heat loss by creating a barrier against cold winds and freezing temperatures, maintaining a stable internal climate
Some covers include UV-resistant coatings to enhance durability and prevent degradation from prolonged sun exposure. Using thermal blankets or insulating films during the night helps conserve heat accumulated during the day. Properly sealed and fitted covers minimize drafts and moisture or condensation buildup, reducing the risk of frost damage.