Poly Patch™ is a complete first-aid kit for greenhouses. This heavy duty tape temporarily repairs minor tears in polyethylene greenhouse film, and can be used as reinforcement in key areas subjected to extra stress. Designed for interior and exterior applications. This rugged patching tape without backing bonds aggressively to polyethylene film. Made from a highly U.V. stabilized 6 mil polyethylene film with a U.V. stabilized adhesive.