HydroThane Tankgard FG: Food-Grade Polyurethane Waterproofing for Marine & Floating Infrastructure

polyurethane waterproofing

With the increasing popularity of coastal infrastructure, floating structures and waterfront construction, there is a growing demand for resilient, flexible and environmentally friendly polyurethane waterproofing solutions.

From jetties and marinas to floating resorts and seaplane terminals, structures are constantly exposed to water, temperature fluctuations, and mechanical stress.

HydroThane™ Tankgard™ FG– a solvent-free, food-grade PU waterproofing coating, is designed to withstand these challenges while providing long-lasting performance and environmental safety.

What is HydroThane Tankgard FG?

HydroThane™ Tankgard™ FG is a two-part, liquid polyurethane coating which provides a seamless elastomeric waterproof membrane.

The coating is 100% solids, providing a high build, robust coating that cures to a tough, yet flexible protective membrane, resistant to harsh environmental and structural stresses.

It is one of the most reliable waterproofing products for critical marine and water-contact applications.

Why Marine & Floating Structures Need Advanced Waterproofing

Marine and floating structures suffer from several issues including:

  • Continuous water immersion
  • Chemical and saltwater exposure
  • Movement of the structure from waves and changing loads
  • Thermal expansion and contraction
  • Potential for leaks and eventual structural failure
  • Corrosion and degradation

These conditions will often cause traditional coatings to fail because of cracking, delamination, corrosion and joint failures.

This is where high-performance polyurethane waterproofing systems outperform conventional waterproofing solutions.

Key Applications of Tankgard FG

This coating is particularly engineered for high-performance waterproofing solutions across diverse marine and floating applications:

Marine Infrastructure

  • Jetties (including private and fuelling jetties)
  • Naval berths and port authority structures
  • Fishing harbours and commercial docks
  • Seaplane terminals
  • Floating bridges

Floating & Recreational Structures

  • Pontoons and floating walkways
  • Marinas and jet ski docks
  • Swim platforms and leisure decks
  • Floating resorts and eco houses
  • Advertising floats

These all applications demand flexibility, long term reliable performance, and seamless protection.

HydroThane Tankgard FG Delivers:

  1. Seamless Waterproofing Protection

Liquid application results into a seamless membrane, where there is no space for weak points where leakage may occur.

  1. Excellent Crack-Bridging Ability

Its flexibility accommodates building movement and avoids cracking.

  1. High Temperature Stability
  • Withstands high temperatures
  • Remains flexible at low temperatures (up to –15°C)
  1. Excellent Bond to Various Substrates

Bonds effectively to:

  • Concrete
  • Metal
  • Wood
  • Prefabricated structures
  1. High Tensile Strength & Elongation

Capable of withstanding structural and mechanical stresses, impacts and wear and tear.

  1. Long-Term Leak Protection

Seals minor cracks and surface imperfections, ensuring complete waterproofing performance.

Food-Grade & Environmentally Safe Coating

One of the most significant advantages of Tankgard FG polyurethane coating is its food-grade certification.

It complies with USFDA 175:300 standards, making it safe for contact with potable water and aqueous environments.

So, Tankgard FG:

  • Does not release harmful chemicals into water
  • Environmentally conscious product, safe for marine life
  • Ideal for eco-sensitive sites
  • Ideal for drinking water-contact infrastructure

This makes it a preferred waterproofing product for sustainable and environmentally responsible green projects.

Why Developers Choose HydroThane Tankgard FG

For real estate developers, infrastructure planners, government bodies, contractors and consultants choosing the right polyurethane waterproofing system is critical for long-term asset performance.

HydroThane Tankgard FG is designed to deliver on these expectations with proven performance in high risk, water contact applications.

What sets it apart:

  • Proven Performance in Marine & Floating Applications
    Tolerates continuous water exposure, structural movements, and severe marine environments, making it suitable for jetties, marinas, floating structures and waterfront assets.
  • Food-Grade & Environmentally Responsible
    Meets USFDA 175:300 certification standards, ensuring safe use in potable water and eco-sensitive marine environments without causing harm to water bodies and living creatures.
  • Seamless System = Lower Failure Risk
    No joints or seams, fewer leakages and failures over time.
  • High Flexibility with Structural Compatibility
    Accommodates thermal expansion, wave-induced movement, and substrate shifts without cracking or delamination.

Reduced Maintenance & Lifecycle Costs
Reduces the need for repairs, downtime and costs of repeating waterproofing.

Conclusion:

The growth in marine and floating infrastructure will continue to drive the need for improved, safe and environmentally friendly waterproofing technologies.

Tankgard™ FG is a state-of-the-art food grade PU coating and waterproofing product that offers seamless, flexible and certified safety.

It offers a reliable solution for long-term waterproofing for a wide range of projects, including jetties, marinas, floating resorts and eco-tourism.

FAQs

Yes, HydroThane Tankgard FG is a food-grade polyurethane coating compliant with USFDA 175:300. It does not leach harmful substances, making it safe for marine ecosystems, floating structures, and water-contact applications.

Absolutely. It is specifically designed for high-exposure environments such as jetties, pontoons, marinas, floating walkways, and naval infrastructure, where continuous water exposure and movement are critical factors.

The coating forms a seamless, elastomeric membrane that provides long-term waterproofing even under continuous immersion, preventing leakage, surface degradation, and structural damage.

No. Its high elongation and flexibility allow it to absorb structural movement caused by waves, load variations, and temperature fluctuations without cracking or delamination.

Yes, it is ideal food grade PU coating for potable water tanks, reservoirs, and water-retaining structures due to its non-toxic, low-odour, and food-grade properties, ensuring water safety and hygiene.

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