Prices for gallon-size body filler can vary based on type, pack size, and availability. To see current pricing:

• Use the size filter to view gallon options.
• Compare single cans, multipacks, and case quantities.
• Check for online deals, and pickup or delivery availability in your area.
• Factor in related supplies like hardener, sandpaper, primer, and safety gear.

Because promotions and inventory change, viewing the product page is the most accurate way to get today’s price. If you’d like assistance, our chat and in-store associates can help you find the right size and format for your project.

They serve different roles, so “stronger” depends on the job.

• Epoxy adhesives/coatings generally offer higher bond strength and moisture resistance. They often cure slower and can be harder to sand.
• Polyester body filler is designed for shaping and feathering repairs on dents and dings. It sands easily and is commonly used under primer and paint.
• Reinforced fillers (fiberglass or metal) can add rigidity where needed.

Choose based on the substrate, repair goal, and paint system compatibility. For structural bonding, epoxy may be suitable; for cosmetic contouring and fast sanding, polyester filler is typically more practical. Always follow the product’s instructions.

The best type depends on the dent and your workflow.

• Lightweight polyester filler: Ideal for small to medium dents; it sands and shapes easily.
• General-purpose body filler: Versatile for typical automotive panels.
• Fiberglass-reinforced filler: Helpful near rust-prone areas, edges, or larger low spots where added stiffness is useful.
• Glazing/spot putty: For pinholes and fine scratches after initial sanding.
• Fast-dry formulas: Useful when turnaround time matters.

Match the filler to your substrate and finishing steps. Check the product description for primer compatibility and recommended grit ranges. You can filter by size (quart or gallon) and check pickup or delivery options before you buy.

A few common missteps can make repairs harder:

• Skipping prep: Clean thoroughly and remove loose paint or rust to a sound surface.
• Incorrect mixing: Follow the hardener ratio and mix until color is uniform.
• Applying too much: Build in thin layers to manage heat and shrinkage.
• Rushing sanding: Start with an appropriate coarse grit, then step up gradually; feather edges.
• Ignoring temperature: Work within the recommended range to avoid poor curing.
• Topcoating too soon: Allow full cure and use primer before paint.

Work in a well-ventilated area and use gloves and eye protection. Results can vary with technique and conditions.

Use each where it performs best:

• Fiberglass resin + cloth/mat: Rebuild or seal areas with cracks, rust-through, or missing material. It creates a reinforced base.
• Body filler: Shape surfaces, smooth dents, and refine contours after structural repairs.
• Combination approach: Reinforce with resin, then finish with filler; let resin cure fully and sand between steps.
• Compatibility: Confirm products are designed to work together and with your primer and paint.

Always ventilate, wear protective gear, and follow label directions. Selecting materials based on the repair stage can help achieve a more durable and smooth finish.