Reliable Coating Systems for Fibreglass Substrates
High-Performance Adhesion and Long-Term Durability for GRP and Fibreglass Surfaces
Coating fibreglass is not the same as coating steel or concrete. GRP presents unique challenges due to its smooth, low-energy surface and natural flexibility. That’s why surface preparation is critical, and why RD-Multiprim is the ideal solution for creating a strong, lasting bond between GRP substrates and your chosen topcoat.
At New Guard Coatings, we understand the complexities of working with fibreglass. Whether you're protecting walkways, tanks, decorative panels, or GRP roofs, our system built around RD-Multiprim delivers reliable performance every time.
✔️ Engineered for Fibreglass and GRP
Designed to Bond Where Others Fail
GRP resists traditional coatings, which often peel or flake due to poor adhesion. RD-Multiprim is specially formulated to overcome this issue, offering exceptional bonding on even the most difficult substrates.
✅ Strong adhesion to fibreglass, GRP, plastics, and composite materials
✅ Fast-drying and user-friendly application
✅ Suitable for both interior and exterior use
✅ Compatible with a wide range of topcoats
✔️ A Complete System Built on Multiprim Performance
RD-Multiprim provides the essential bond that holds the system together. It ensures your topcoat remains in place and maintains performance, even in demanding environments.
✅ Minimises the risk of cracking, flaking, or peeling
✅ Withstands movement and expansion in fibreglass surfaces
✅ Enhances the long-term durability of the full coating system
✔️ Versatile for a Wide Range of Applications
From marine and industrial settings to architectural and decorative projects, this system adapts to meet the specific needs of GRP and fibreglass surfaces:
✅ GRP roofs and gutters needing weatherproof, flexible protection
✅ Fibreglass tanks and pipes exposed to chemicals or environmental wear
✅ Decorative panels, trims, or modular building façades requiring long-term colour and gloss retention
✅ Marine components and boats needing high adhesion and movement tolerance
✔️ Built to Perform in Harsh Conditions
RD-Multiprim supports long-lasting results by providing a reliable base layer for waterproofing and chemical resistance. Paired with a compatible topcoat, it protects against:
✅ Water ingress and environmental exposure
✅ UV damage and temperature shifts
✅ Mild acids, alkalis, and routine cleaning products
✔️ Smooth Finish and Broad Colour Choice
RD-Multiprim creates a uniform surface that allows topcoats to level smoothly and adhere properly. A wide selection of RAL and BS colour options is available to suit both functional and aesthetic requirements.
Ideal for Use On:
🛠 GRP Roofs and Gutters requiring UV-stable, waterproof protection
🚢 Marine Components and Fibreglass Boats where flexibility and chemical resistance are vital
🏭 Industrial Tanks and Pipes made from GRP or composite materials
🏠 Decorative Panels, Doors, and Trims needing strong adhesion and clean finishes
Why RD-Multiprim?
Because adhesion is the foundation of any successful GRP coating system. RD-Multiprim makes sure your project starts right and stays protected long-term. It is easy to apply, versatile, and trusted across industries.
Struggling with coatings peeling off fibreglass?
Start with RD-Multiprim and get lasting results.