Types of Roofing Resin Explained: GRP, HPX, MultiFlex, Polyurethane & Acrylic

Liquid Roofing Systems

Looking for the Right Roofing Resin? Start Here

Choosing the best roofing resin can make all the difference to your project’s durability, waterproofing, and lifespan. Whether you’re working on a flat roof, balcony, or commercial building, selecting the right system ensures long-term protection and minimal maintenance.

In this guide, we break down the 5 most common types of roofing resin—with benefits, use cases, and tips to help you decide quickly.

Quick Comparison: Roofing Resin Types

Resin Type
Best For
Key Benefit
GRP
Flat Roofs, Walkways
High strength & long lifespan
HPX
Industrial, extreme climates
Superior Durability
MultiFlex
DIY, Complex Shapes
Easy & Flexble Application
Polyurethane
UV Exposure, green roofs
Crack-bridging flexibility
Acrylic
Refurbishment, metal roofs
Fast drying & reflective

GRP Roofing Resin (Glass Reinforced Plastic)

GRP Tin

GRP roofing resin is a fibreglass-reinforced polyester system that forms a seamless, highly durable waterproof coating—ideal for flat roofing.

Benefits

  • 25+ year lifespan
  • Seamless, watertight finish
  • High impact resistance
  • Minimal maintenance

Best Uses

  • Flat roofs
  • Balconies & terraces
  • Walkways with foot traffic

HPX Roofing Resin (High-Performance Hybrid)

HPX Tin

HPX is a high-performance hybrid roofing resin engineered for demanding conditions where standard systems may fail.

Benefits

  • Exceptional tensile strength
  • Handles extreme weather (hot & cold)
  • Chemical and environmental resistance

Best Uses

  • Industrial roofing
  • Commercial buildings
  • High-stress environments

MultiFlex Roofing Resin

Flex Tin

MultiFlex is a flexible, user-friendly resin system designed for ease of use and adaptability—perfect for both professionals and DIY users.

Benefits

  • Excellent flexibility for complex detailing
  • Easy application (roller or brush)
  • Cost-effective solution

Best Uses

  • Residential flat roofs
  • Refurbishments
  • DIY roofing projects

Polyurethane (PU) Roofing Resin

Polyurethane Tin

Polyurethane resin creates a liquid-applied, elastic membrane that expands and contracts with temperature changes.

Benefits

  • Superior waterproofing
  • Excellent UV resistance
  • Crack-bridging flexibility

Best Uses

  • Flat roofs
  • Green roofs
  • UV-exposed areas

Acrylic Roofing Resin

Acrylic Tin

Acrylic resin is a water-based, fast-drying coating known for its reflective and energy-efficient properties.

Benefits

  • Reflects sunlight (reduces heat)
  • Quick drying
  • Easy application

 

Best Uses

  • Metal roofs
  • Pitched roofs
  • Refurbishment projects

How to Choose the Best Roofing Resin

When selecting a roofing system, consider:

  • Roof type (flat, pitched, metal)
  • Climate exposure (UV, temperature, chemicals)
  • Required flexibility & durability
  • Installation method (DIY vs professional)

Expert Tip:

  • Choose GRP for durability
  • Choose Polyurethane if movement is expected
  • Choose HPX for harsh environments

Roofing Resin FAQ's

What is the best roofing resin for flat roofs?

GRP and polyurethane resins are the most popular due to their seamless waterproofing and durability.

What’s the difference between GRP and polyurethane?

  • GRP: Rigid and strong
  • Polyurethane: Flexible and movement-tolerant

Can I install roofing resin myself?

Yes—MultiFlex and acrylic systems are ideal for DIY projects due to their simplicity.

Which roofing resin is best for extreme weather?

HPX resin is designed for extreme temperatures and demanding environments.

How long does resin roofing last?

Most systems last 20–30+ years when properly installed.

Can resin be applied over existing roofs?

Often yes, but surface preparation is critical for adhesion and performance.

Final Thoughts: Which Roofing Resin is Right for You?

Each roofing resin offers unique advantages. The right choice depends on your project type, budget, and performance needs.

Need help choosing? Speak to our team or explore our full range of roofing resin systems to find the perfect fit.

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