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A member of Winn & Coales International

Our Story

Winn & Coales (Denso) Ltd specialise in the manufacture and supply of corrosion and chemical resistant coatings and linings for the long-term protection of steel and concrete, even in the toughest environments.

Quality and Innovation

The company is at the forefront of innovative corrosion prevention technology, focused upon developing an extensive range of bespoke solutions to meet the specific needs of different industries.

The full range of products are manufactured to comply with the strict quality standards of BS EN ISO 14001:2015 (environmental standard) and BS EN ISO 9001:2015 (quality management standard). The products are designed for longevity, with solutions that when applied correctly can offer up to 30 years of maintenance free service.

Trusted Brands

Having grown from a small business founded in the City of London in 1883, Winn & Coales International Ltd has vast experience in solving corrosion and sealing problems, as well as an international reputation for supplying long lasting and reliable products.

Its trusted Denso™, Premier™, Protal™, Steelcoat™, SeaShield™, Archco™, Sylglas™ and Premier Shrink Sleeve™ systems are supplied to the petrochemical, process, offshore, water, gas, telecoms, renewables, civil engineering and DIY industries internationally.


International Service

Subsidiary companies, located in the USA, Canada, Australia, New Zealand and South Africa, together with a network of agents, ensure that superior corrosion prevention products are available globally.

Protal Main image 1 - Denso

Our Timeline



The company’s vision is to be the leading manufacturer and supplier of anti-corrosion, waterproofing and sealing materials and technology to the world providing, in parallel, unrivalled service to all our customers. We will supply high quality, cost effective and environmentally responsible solutions.

This will be achieved responsibly and sustainably with consideration given to the impact of the business to the environment. Risk will be managed effectively and a continuous program of improvement and innovation, research and development will be followed. Business will be conducted ethically, and employees will be treated fairly.