U-Pol FIBRAL Glass Fibre Repair Paste - Stone Chip Paste Body Filler
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Product Information
Full details
The U-Pol FIBRAL Glass Fibre Repair Paste is an essential tool for automotive enthusiasts and professional technicians who need to bridge holes, fill pinholes, and restore GRP (Glass Reinforced Plastic) surfaces. This 880ml high-performance paste offers an easy-spread application and dries to a sandable finish, making it perfect for repairing stone chips and larger body defects. While it provides excellent adhesion and durability, users should be aware that it requires proper mixing and sanding technique to achieve a seamless, professional-grade finish.
All features
| Model Part Number | U-Pol FIBRAL Glaze Stone Chip Paste Body Filler |
|---|---|
| Brand | U-Pol |
Extended Product Information
FAQs
Can this be used on metal surfaces?
Yes, it adheres well to metal, provided the surface is clean, rust-free, and scuffed to improve mechanical bonding.
How long does it take to dry?
Curing time varies based on ambient temperature, but generally, it is ready for sanding within 20 to 30 minutes.
Is this waterproof?
Once fully cured and finished with a topcoat or paint, the repair becomes water-resistant and suitable for outdoor use.
Do I need a hardener?
Yes, this product typically requires a separate hardener to initiate the chemical reaction necessary for curing.
Can I apply paint directly over the filler?
It is recommended to apply a primer layer over the sanded filler before applying your final topcoat to ensure color uniformity and adhesion.
Troubleshooting
Filler is not hardening
Ensure the correct ratio of hardener was used and that the two components were thoroughly mixed until a uniform color was achieved.
Filler lifting after sanding
The surface was likely not cleaned or scuffed enough before application; ensure the substrate is clean and prepped for mechanical adhesion.
Pinholes appearing after application
Apply the paste using a firm pressing motion with the spreader to force air out of the defect, or perform a second thin fill layer.
Pros and Cons
Pros
- Excellent for filling deep chips and bridging small holes
- Easy to spread and shape during application
- Durable, long-lasting repair strength
- Highly compatible with GRP surfaces
- Sands down smoothly to level with surrounding areas
Cons
- Requires careful mixing to ensure proper curing
- Not suitable for structural repairs on load-bearing components
- Creates significant dust during the sanding process
- Limited shelf life once the container is opened
Setup, Compatibility & Care
Before starting your repair, ensure the substrate is clean, dry, and degreased. If you are working on metal, scuff the surface with abrasive paper to improve adhesion. For GRP, ensure no wax or residue is present. Always mix the paste with its hardener precisely according to the ratio indicated on the packaging to prevent soft spots. Store the container in a cool, dry place and ensure the lid or bag is sealed tightly after every use to prevent the paste from drying out prematurely. Keep the product away from direct sunlight during storage.