RayHong Fiberglass Repair Paste – Long Strand Fiber, 20g

RayHong Fiberglass Repair Paste – Fast-Bonding, Long Strand Fiber Formula

Restore damaged fiberglass surfaces to a smooth, high-gloss finish with the RayHong Fiberglass Repair Paste. This professional-grade, single-component putty features a long strand fiber formula with high viscosity that bonds quickly, won't sag, and delivers a seamless result on boats, cars, and more — no mixing required.

Made in Mainland China.

Key Features

• Long Strand Fiber Technology: Reinforced fiberglass strands provide exceptional structural bonding strength, ideal for filling deep cracks, gouges, nicks, and scratches.
• Quick-Dry Formula: Sets firmly within approximately 1 hour, minimizing downtime and getting you back on the water or road faster.
• High-Viscosity, No-Sag: Thick paste stays in place during application — perfect for vertical surfaces and overhead areas.
• No Mixing Needed: Ready-to-use straight from the tube. Simply squeeze, apply, and smooth — no separate hardener or catalyst required.
• Preserves Original Finish: Compatible with existing paint; repairs scratches without compromising the surrounding surface.
• Wide Application: Ideal for fiberglass boats, hulls, decks, car body panels, RVs, and other fiberglass or composite surfaces.
• 20g / 45g Total Weight: Compact and portable — easy to store in your toolbox or marine kit.
• 3-Year Shelf Life: Store in a cool, dry place for long-lasting usability.

Product Specifications

• Brand: RayHong
• Net Content: 20g
• Item Weight: 45g
• Color: White
• Shelf Life: 3 years
• High-Concern Chemicals: None
• Origin: Mainland China

How to Use

1. Prepare the Surface: Sand the damaged area with sandpaper, ensuring the sanding zone is slightly larger than the crack or scratch. Wipe away all dust with a clean, dry cloth.
2. Apply the Paste: Squeeze out an appropriate amount and spread a thin, even layer using a small scraper. Avoid thick application, as it may hinder drying. Do not scrape back and forth repeatedly to prevent the coating from flaking or cracking. Note: This product is best suited for scratches and surface damage up to 0.5mm deep. For deeper damage, fill with body putty first, sand smooth, then apply this paste as a finishing layer.
3. Smooth & Finish: After approximately 1 hour, wet-sand the area with damp sandpaper until smooth. Repeat steps 2–3 if air bubbles or minor imperfections remain.

Important Notes

• Actual color may vary slightly from images due to monitor settings and lighting conditions.
• Please allow ±1–3 cm measurement tolerance due to manual measuring methods.

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For general guidance on safe handling of adhesive and repair compounds, refer to the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Thermosetting polymer

Frequently Asked Questions

Q: Can this fiberglass repair paste be used on car body panels as well as boats?

A: Yes! The RayHong Fiberglass Repair Paste is designed for use on any fiberglass or composite surface, including boat hulls, decks, car body panels, RVs, and more. It bonds strongly to fiberglass without affecting the surrounding paint finish.

Q: How long does it take for the fiberglass repair paste to dry completely?

A: The paste typically sets firm enough for wet sanding within approximately 1 hour under normal conditions. For best results, apply a thin layer — thick applications may take longer to dry or may not cure fully.

Q: Do I need to mix this product with a hardener before using it?

A: No mixing is required. This is a single-component, ready-to-use paste. Simply squeeze out the desired amount, apply with a small scraper, and let it dry — no separate hardener or catalyst needed.

Q: What is the maximum crack or scratch depth this paste can fill effectively?

A: This product is best suited for surface damage up to 0.5mm deep. For deeper gouges or larger cracks, it is recommended to first fill the area with a body or fiberglass putty, sand it flat, and then apply this paste as a final smoothing and finishing layer.