UV cure lining

UV cure lining uses a glass fibre liner pre-impregnated with photo-sensitive resin that hardens when a UV light train is pulled through the inflated liner. The controlled cure produces a consistent, fast-setting and high-strength pipe in around 20 to 90 minutes depending on diameter and wall thickness. The shelf life of UV liners is significantly longer than ambient cure liners, which makes them better suited to planned commercial drainage works and Thames Water adopted sewer rehabilitation. The cure is monitored through cameras in the light train, giving documented evidence in accordance with BS EN ISO 11296-4. The equipment is bulkier than other systems and may not suit very tight access in central London terraces.