Bondo® Fiberglass Resin

  • For repairing, resurfacing and rebuilding a range of materials
  • Can be used alone as a sealer
  • Compatible with all paints including gel coat and marine paint
  • Includes Bondo® Fiberglass Resin Liquid Hardener for convenient, accurate mixing
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All Options

Excellent for Projects Large and Small
Suitable for a tremendous range of projects, Bondo® Fiberglass Resin can stand alone or be used with backing strips, tape, cloth or fiberglass mat for jobs where you need reliable strength. This trusted fiberglass resin is ideal for resurfacing bathtubs or showers, and joins most surfaces together with a lasting bond. Its waterproof formula — this material can also be used for boat building — works as a sealer for concrete or damaged and rotted wood, and it is excellent for repairing, rebuilding and recreating damaged fiberglass on snowmobiles, boats, personal watercraft and more. The cured resin is compatible with nearly any paint system including gel coat and marine paint.

Learn more about 3M™ Perfect-It™ Gelcoat Finishing line of products (PDF, 25.2 Mb)

Easy from Mixing to Sanding
Along with its strength, Bondo® Fiberglass Resin is also simple to use. It is easily mixed using the included Bondo® Liquid Hardener, designed specifically for use with Bondo® fillers and resins. It is sandable in less than two hours.

Use During the Fill stage of the 3M™ Body Repair System
Even a small repair can seem complex at first. So 3M's Body Repair System simplifies the entire automotive body repair process by dividing it into four stages:

Stage 1 — Prepare. This stage includes pulling dents, removal of paint and rust and efficient, effective masking of the area.

Stage 2 — Fill. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting.

Stage 3 — Paint. This stage includes painting the area and blending and smoothing primer and paint.

Stage 4 — Finish. The final stage for showroom-grade results: removing small defects, sealing and polishing clear coats and other painted surfaces.

Learn more about Standard Operating Procedures for Collision Repair (PDF, 325.6 kb)

3M supplies premium products such as abrasives, tapes, body fillers and tools for every stage. This system helps you work easily, efficiently and successfully across the entire body repair process.

Bringing Science to the Art of Auto Body Repair
As a brand of 3M, Bondo® is well known among boat manufacturers and collision repair professionals. This polyester resin is another way that 3M applies science to life, and helps you restore and maintain the beauty and value of your cars, boats and other possessions in and around the home or shop.

View more Bondo® products (PDF, 812.19 kb)

  • For repairing, resurfacing and rebuilding a range of materials
  • Can be used alone as a sealer
  • Compatible with all paints including gel coat and marine paint
  • Includes Bondo® Fiberglass Resin Liquid Hardener for convenient, accurate mixing
  • Use during the Fill stage of the 3M™ Body Repair System
Attribute Name
Alternative Sale Availability
2. This item can be sold to consumers and industrial and there are no VOC restrictions.
Rust Repair
Case Quantity
12 Cans per Case, 2 Cans per Case, 4 Cans per Case, 6 Cans per Case
Polyester Resin
Maximum Operating Temperature (Celsius)
82.2 Degree Celsius
Maximum Operating Temperature (Fahrenheit)
180 Degree Fahrenheit
Customer Reviews
Bondo® Fiberglass Resin is rated 3.0 out of 5 by 2.
Rated 5 out of 5 by from Pond waterfall I bought Bondo to make a 6 inch 10 inch catch basin for a diy pond waterfall. I used cardboard as the form and all went perfectly. Preparation is the key to get it done well and the product you use is paramount. This product worked perfectly. The waterfall runs 24/7 yet has no leaks. I have another waterfall project pending and will be using Bondo again.
Date published: 2021-08-12
Rated 1 out of 5 by from Never did harden I bought this yesterday at Canadian Tire, mixed 90 ml of resin with 30 drops of the included MEKP hardener as in the instructions. I mixed it well for a full minute with a plastic fork. I then soaked fibreglass cloth in it and applied it to the repair I was doing. It never did harden even after a day later. It must be old stock. Where is the expiry date on the can? Now how do I remove this big mess?
Date published: 2021-07-27
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