Profile: Winn and Coales (Denso) Ltd. is a provider of corrosion prevention and sealing technology. We hold a recognition of BS EN ISO 9001:2008 quality certification. Our range comprises of a variety of specialized pipe and structural coatings, marine protection systems including tapes, brush & spray applied liquid coatings, mastics, and primers & sealants based on materials such as petrolatum, butyl rubber, bitumen, plastics, and epoxy resin.