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Polyurea vs GRP: Which Lining is Right for Your Application?

When it comes to protecting tanks, bunds, Pools, Roofs & Floors, two leading systems dominate the conversation: Polyurea (Spray-Coat)  and GRP Glass Reinforced Plastic laminates (Glass-Line). While both offer durability, they’re designed for different applications. 

At Tankline, we apply both systems depending on the client’s needs. Here’s a brief breakdown to help you choose the best solution for your specific project.

What is Polyurea?

Polyurea is a spray-applied elastomer that is touch dry in seconds to form a seamless, flexible membrane. It’s perfect for rapid installations, large areas, and projects needing minimal downtime. 

What is GRP?

GRP is a hand-applied laminate system, typically involving layers of resin-impregnated glass fibre matting, cured to form a rigid, chemically resistant surface. It’s widely used in structural tank linings bunds in poor condition and harsh chemical environments.

When to Use Polyurea

Choose Spray-Coat Polyurea when:

  • You need fast turnaround and minimal disruption
  • The structure may move, flex, or crack
  • You’re lining a large open area like a bund, floor, or roof
  • You want a seamless, waterproof finish

When to Use GRP

Go for Glass-Line (GRP) when:

  • You’re dealing with structural damage
  • Aggressive Chemical Storage or contact
  • Long-term reinforcement or strengthening of the Substrate is required
  • Accessibility is an issue

Tankline Offers Both – So You Don’t Have to Compromise

Unlike some contractors who only specialise in one system, Tankline offers both GRP (Glass-Line) and Polyurea (Spray-Coat), so we can recommend the best solutions.

Whether you’re lining a steel process tank, a leaking concrete bund, or refurbishing chemical containment zones, we assess the site, the substrate, and the environmental demands before proposing the most cost-effective, long-lasting option for your assets

Let’s Line It Right – First Time

Not sure which system you need? We’re happy to visit site, carry out a site survey, and recommend the right approach.

Call 01206 670309 or email [email protected] to contact our technical team.

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Contact our technical team today on 01206 670309 or email [email protected] to discuss the best lining solution for your facility.