The Laydex 1000 Gauge Polythene - Black is a black non-reinforced polythene film. This versatile roll of heavy duty sheeting has countless uses on building sites, at home, and in the garden. Black polythene deteriorates at a much slower rate than clear polythene when exposed to UV light, so this film is a longer lasting alternative. This Laydex polythene is also tear resistant and has a high tensile strength. This roll is 3.5m multi-fold.