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Denso’s Viscotaq: Protecting Your Tank Base

Appeared in Marine Construction Magazine July, 2025 Issue

Reading Time: 2 Minutes

If you’re in the business of managing above-ground storage tanks, you know the headache that tank base corrosion can cause.

Denso, Inc., a provider of corrosion prevention technologies, has introduced a system designed to tackle this persistent problem head-on. The Viscotaq Tank Base Corrosion Protection System offers a durable, moisture-resistant barrier that safeguards the critical tank chime area.

This system isn’t just about preventing corrosion – it’s about extending tank lifespans, reducing maintenance costs, and minimizing safety and environmental risks. By creating a flexible, self-adhering barrier, the Viscotaq system keeps water and contaminants at bay.

The Viscotaq system has a simplified, four-part application process that’s as effective as it is easy to use:

Viscotaq Adhesion Promoter

A quick-drying primer that ensures maximum adhesion to both the tank chime and concrete base; ViscoMastic or ViscoMastic XHT: A non-toxic, conformable mastic that seals gaps and cracks. It’s self-healing, flexible, and fire-retardant. For high-temperature environments up to 257°F (125°C), the XHT variant is available; Viscotaq EZ-Wrap

A visco-elastic coating with a paintable backing, providing complete coverage with a weatherboard overlap for maximum moisture protection.

Archco Topcoats

These flexible, durable finishes come in two options:

  • Archco 15: A UV-resistant acrylic topcoat for applications up to 150°F (65°C)
  • Archco 65: A polyurethane topcoat offering superior chemical resistance for temperatures up to 200°F (93°C)

What makes the Viscotaq system stand out is its ability to resist mechanical damage, corrosion and harsh environmental conditions. Whether you’re dealing with high temperatures or chemical exposure, this modular system has you covered. Plus, it enhances the aesthetic appearance of your tanks – because who says industrial equipment can’t look good? “The Viscotaq Tank Base Protection System delivers performance for tank base protection,” said Edwin Welles, Vice President of Viscotaq products. “By combining advanced materials with a simple application process, we’re providing operators with a reliable, cost-effective way to protect critical infrastructure.”

The Viscotaq Tank Base Corrosion Protection System offers superior protection, ease of use and versatility to meet diverse environmental demands. Protecting your assets isn’t just about preventing problems – it’s about investing in the longevity and efficiency of your operations. With solutions like this, the future of tank base protection looks brighter than ever.

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