At the large United Biscuit factory where bagged foods such as crisps and biscuits are produced, a lift pit had been subject to a hydraulic oil leak for around 15 years, with water ingress mixing with the oil to make an incredibly thick and dirty black film on all surfaces. Beautiful Basements were brought on board to solve the water ingress problem. All the surfaces were extensively cleaned and prepared ready for waterproofing. In a series of stages the walls and floor were repaired and primed using Koster Aquatecnic waterproofing slurries. The waterproofing consisted of 3 coats of waterproofing slurry and finished with an oil resistant wearing coat to prevent oil breaking the slurry down.