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3M

Fiberglass Resin Repair Kit, 0.45 pint (7.2 oz), All-in-One Set with Resin, Hardener, Fiberglass Cloth and Tools for Automotive, Marine and Home Repairs

Based on 268 reviews
Condition: New
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$21.99
Save $9.70 was $31.69

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Availability: In Stock.
Fulfilled by Fat Boy Tools

Arrives Wednesday, Nov 11
Order within 9 hours and 37 minutes

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At a glance

Condition
New
Dimensions
2.3 x 3.6 x 7 in
Weight
13.7 oz
Exterior
Clear

Features 5

  • All-in-One DIY Repair Kit: Complete fiberglass repair set that includes 0.45 pint (7.2 oz) of resin, liquid hardener, fiberglass cloth, mixing tray, applicator stick, spreader and instructions. Everything needed for a quick repair no extra tools or experience required.
  • 100% Waterproof & Permanent Bond: Industrial-strength resin cures to a completely waterproof solid patch for long-lasting repairs. Wont shrink, crack, or pop off over time ideal for sealing leaky boat hulls, fixing rusted auto panels, or patching wet areas like pools and tubs.
  • Strong Multi-Surface Adhesion: Versatile formula bonds to fiberglass, wood, metal, concrete, and more. Restore cracked boat fiberglass, repair damaged car bodies, mend surfboards, gutters, or bathtubs one kit handles it all. Forms a tough fiber-reinforced patch on most surfaces.
  • Fast Curing Sand & Paint in Hours: Quick-curing resin sets in as little as 2 hours, letting you finish repairs fast. Once hardened, its easy to sand to a smooth finish and is paintable for a seamless blend with your surface. Get professional results in an afternoon.

Description

Repair fiberglass, wood, and metal like a pro with this 1/2 Pint Fiberglass Resin Repair Kit. This all-in-one kit includes everything you need to mend cracks or holes: resin, hardener, fiberglass cloth, mixing tools, and an instruction guide. No prior experience is needed – easy step-by-step directions walk you through mixing and applying the resin for a quick, solid repair. Each repair cures to be 100% waterproof and long-lasting. The high- quality polyester resin hardens into a rock-solid, marine-grade seal that won’t rust or rot. It’s perfect for patching leaky boat hulls, fixing cracked bathtubs or hot tubs, and reinforcing rusted car body panels. Once cured, the fiberglass-reinforced patch withstands water, weather, and vibration, so you can trust it to hold up over time, even in demanding conditions. This kit’s resin bonds strongly to multiple materials. Use it on fiberglass surfaces, metal sheets, wood, ceramic, or concrete. From repairing chipped fiberglass on your boat or RV to sealing a cracked shower wall or swimming pool lining, to rebuilding a section of auto body around a rust hole – this one kit handles a wide range of projects. The finished repair is rigid and sandable, so you can file or sand it smooth and then paint over it for a seamless finish that blends into the surrounding area. Fast cure, easy finish: The resin sets in about 2 hours (at 75°F), which means most small repairs can be completed in an afternoon. You won’t be waiting days for it to dry. As soon as it hardens, you can sand, drill, or paint the area as needed. Why spend more on new parts or professional labor when you can do it yourself with professional-quality results? This Fiberglass Resin Repair Kit gives you the power to save time and money by restoring damaged parts on your own. Keep one on hand for emergency fixes and long-term maintenance – it’s a reliable solution for anyone who values sturdy, permanent repairs.

Specs 8

Manufacturer 3m Company
Brand 3M
Model 420
Item Weight 13.7 ounces
Product Dimensions 2.3 x 3.6 x 7 inches
Item model number 420
Exterior Clear
Manufacturer Part Number 420

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 11

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


Works very well
Filled the hole verry good easy to sand thanks I did have to use this inner stuff though thank you
Reviewed in the United States on August 4, 2024 by SHAWN DEAN MCDONALD

Great value
Bondo is strill the best
Reviewed in the United States on May 18, 2024 by Pal

Read details
Was very small should have read oz.. but it will work will need more....
Reviewed in the United States on October 8, 2019 by GRACE

Worked
Shower pan crack repair . stopped the lea.k.
Reviewed in the United States on April 19, 2024 by John

Works well for my knowledge
Kind of messy, but sands out easily
Reviewed in the United States on April 14, 2024 by John Taylor Frederick Jr

Bondo Fiberglass Repair Kit
It is a very well made product when you mix and apply it right. There was a rust hole in the back of my sons vehicle the size of a baseball. We used this bondo and the completed look is not noticeable. I only wish I took before and after pictures to show.
Reviewed in the United States on August 17, 2023 by Mario

Easy to use
While I was at work last year someone dropped something heavy on the fiberglass top of my VW campervan. With little experience and knowledge of fiberglass patching I was able to patch and paint the area so that it’s barely noticeable.
Reviewed in the United States on September 5, 2023 by Duke Playbent Duke Playbent

Works perfect
I like how hard it gets after drying. Its just as strong as the rest of the body i repaired. I used it with my golf cart.
Reviewed in the United States on September 25, 2023 by Daffy Nobody
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