When restoring your car’s bodywork, the right body filler can make all the difference between a flawless finish and a frustrating repair. Rustbuster offers a range of high-quality fillers designed to suit different repair needs — from small dents to deep metal repairs.
Below, you’ll find a comparison of Rustbuster’s body fillers to help you choose the perfect product for your project.
Rustbuster Body Fillers Comparison Table
| Product Name | Best For | Key Features | Size & Price (ex. VAT) |
|---|---|---|---|
| PROXL Ultrafill Deep | Deep dents & large repairs | High build, excellent adhesion, easy to sand | 3L – £24.99 |
| PROXL Ultrafill Glass Fibre | Structural repairs needing reinforcement | Contains glass fibre strands for strength | 1.85L – £21.99 |
| PROXL Ultrafill Gold | Smooth finish & premium repairs | Superior sanding, smooth application, show-quality finish | 3L – £23.99 |
| PROXL Ultrafill Lite | Lightweight & minor repairs | Easy to sand and apply, reduced weight filler | 3L – £23.50 |
| PROXL Ultrafill Metal Filler | Metal surface repairs | Designed specifically for metal, strong adhesion | Various sizes £5.50 – £12.20 |
| Dinitrol Alusoft Metal Filler | Deep rusted metal repairs | High aluminium content, galvanic protection, rust-free finish | Various sizes approx. £33.50 |
How to Choose the Right Rustbuster Body Filler
-
Small to Medium Repairs:
Use PROXL Ultrafill Lite for minor dents where a lightweight, easy-to-sand filler is ideal. -
Deep or Large Dents:
Choose PROXL Ultrafill Deep to fill larger imperfections with a high-build product that sands well. -
Structural Repairs:
When strength is essential, PROXL Ultrafill Glass Fibre incorporates glass fibres to reinforce the repair area. -
Premium Finishes:
For a smoother, finer finish ready for painting, PROXL Ultrafill Gold is the go-to choice. -
Metal-Specific Repairs:
PROXL Ultrafill Metal Filler is formulated to bond firmly to metal surfaces, ideal for patching and smoothing metal panels. -
Rusty or Corroded Metal:
Dinitrol Alusoft Metal Filler is best for areas affected by rust, offering galvanic protection due to its aluminium content.
FAQs About Rustbuster Body Fillers
Q1: Can I use these fillers on plastic parts?
A1: These Rustbuster fillers are primarily designed for metal and painted surfaces. For plastic repairs, specialized plastic fillers or adhesion promoters are recommended.
Q2: How long should I wait before sanding the filler?
A2: Most Rustbuster fillers cure within 20-30 minutes, but times may vary based on temperature and filler thickness. Always check the product instructions.
Q3: What surface preparation is needed?
A3: Ensure the area is clean, dry, and free from loose rust or old filler. For rusty surfaces, treat first with a rust converter or appropriate primer before applying filler.
Q4: Can I apply paint directly over the filler?
A4: No, it’s best to prime the filled area with a compatible primer before painting to ensure adhesion and finish quality.
Q5: Are these fillers suitable for professional body shops?
A5: Yes, Rustbuster fillers are formulated to meet professional standards, offering excellent adhesion, sanding, and finish quality.
Q6: What’s the best filler for Classic Cars?
A6: For classic cars, the best car body filler from your stocked products is PROXL Ultrafill Gold. Here’s why: It sands smoothly to a fine finish, perfect for achieving the flawless, show-quality look classic cars deserve. It’s easy to work with, helping preserve the original body lines and detail. Ideal for smaller repairs and finishing work where appearance matters most. If you need to fill deeper dents or structural areas, PROXL Ultrafill Deep or PROXL Ultrafill Glass Fibre are great supportive options. But for overall classic car restoration, especially where a smooth finish is key, PROXL Ultrafill Gold stands out as the best choice.
Q7: Can I apply Car Body Filler over rust?
A7: Applying car body filler directly over rust is not recommended. Rust will continue to spread underneath, causing the filler to crack, lift, or fall out over time.
Final Thoughts
Choosing the right body filler sets the foundation for a great repair. Whether you’re tackling minor dents or restoring rust-damaged panels, Rustbuster’s range provides dependable, high-quality options to fit your project’s needs. For more information or to order, check out Rustbuster’s official body filler range here.
