Best Glue For Fiberglass

If you’re planning on refinishing your fiberglass surfaces, or if you want to maintain them to keep them looking new and vibrant, it’s essential to use the best glue for Fiberglass that you can find. 

Fiberglass surfaces will last longer if adequately glued down, so using an inferior adhesive could cost you extra money and time in the long run.

And since there are so many glues on the market these days, it can be hard to know which one is the suitable glue for Fiberglass you need.

Read More: Best CA Glue For Woodworking

Top 4 Best Glue for Fiberglass

  • 3M SMC/Fiberglass Repair Adhesive 08272
  • J-B Weld ClearWeld 5 Minute Epoxy
  • Epoxy Adhesive C-Tough by CECCORP
  • Bondo Fiberglass Resin

#1. 3M SMC/Fiberglass Repair Adhesive 08272

3M SMCFiberglass Repair Adhesive 08272

3M Fiberglass Repair Adhesive Specs

Compatible MaterialFiberglass, Metal, Plastic
Volume400 ML
Drying Time10 Minutes
Cure Time3 Hours

3M Fiberglass Repair Adhesive Review

3M Fiberglass Repair Adhesive is a two-part urethane or two-part epoxy adhesive that effectively bonds rigid plastic. The product has been designed to repair fiberglass boats, other watercraft, and bonding metals. Plus, this product works great for repairing any type of plastic on your car.

The two-component acrylic resin adhesive offers great sag resistance. This product is designed to be an adhesive that can be used on fiberglass and other materials while providing the best safety regarding health risks.

The 3M Adhesive has been tested and proven to provide a strong bond with surfaces, as well as being able to withstand harsh weather conditions.

It’s hard as a rock, and you only have to wait 10 minutes for it to set. The bond created by this glue is extremely strong, which makes it perfect for repairing items like metal to metal.

3M Fiberglass Repair Adhesive Pros And Cons


  • Bonds well to a variety of materials
  • Sag resistant
  • Quick drying 


  • None.

#2. J-B Weld ClearWeld 5 Minute Epoxy

J-B Weld ClearWeld 5 Minute Epoxy

J-B Weld Specs

Compatible MaterialFiberglass, Glass, Concrete, Wood
Volume25 ML
Drying Time5 Minutes
Cure Time1 hours

J-B Weld Review

J-B Weld ClearWeld 5 Minute Epoxy is a strong and lasting bond between metal, tile, most plastics, ceramic, fiberglass, wood, and more. It sets quickly and does not require curing time. This product comes in a syringe designed for easy 1:1 mixing with a resealing cap that prevents drying out and leaking.

This product sets up in five minutes and cures in one hour. This product has a tensile strength of 3900 PSI, making it one of the strongest epoxy products. The color of the J-B Weld ClearWeld will not change when it is mixed with its mixing tray and stir stick.

You can DIY with J-B Weld no matter how big or small the job. J-B Weld’s epoxy and adhesives are the World’s Strongest Bond. For the best results, J-B Weld delivers superior performance and quality.

J-B Weld Pros And Cons


  • The adhesive comes with a syringe for easy mixing
  • It has a re-sealable cap to prevent drying out
  • Strong bond
  • It can be used on a variety of surfaces


  • It may not work on all types of surfaces.

#3. Epoxy Adhesive C-Tough by CECCORP

Epoxy Adhesive C-Tough by CECCORP

CECCORP Epoxy Adhesive Specs

Compatible MaterialFiberglass, Masonry, Wood, Automotive
Volume32 Fluid Ounces
Drying Time40 Minutes
Cure Time24 Hours

CECCORP Epoxy Adhesive Review

Epoxy Adhesive C-Tough by CECCORP is a high-quality, water-resistant adhesive that can be used when you need a powerful and durable sealant. It’s perfect for industrial applications, house renovations, automobile manufacture, marine situations, and more.

It has many uses and can be used for bonding various materials together. This product is great for people who work with wood, aluminum, or fiberglass as it can be used to repair furniture, boat hulls, or any other structural situation where you need an adhesive.

With its solid chemical bonds and ability to resist extreme conditions, Epoxy Adhesive C-Tough by CECCORP is perfect for anyone who needs to make products that last. The easy 1:1 mixing ratio and 24-hour cure time make it one of the most versatile epoxies on the market.

CECCORP Epoxy Adhesive Pros And Cons


  • It can be used for a variety of applications
  • Long working time
  • Shock resistant
  • Water-resistant
  • Impact resistant
  • Strong chemical resistance


  • Long cure time.

#4. Bondo Fiberglass Resin

Bondo Fiberglass Resin

Bondo Fiberglass Resin Specs

Compatible MaterialFiberglass, Metal
Volume‎1 Quarts
ColorLight Brown
Drying Time
Cure Time2 Hours

Bondo Fiberglass Review

Bondo Fiberglass Resin is the perfect solution for all your repair needs. It’s water-resistant and easy to apply so that you can fix leaks, cracks, holes, and more in no time. The resin is 100% waterproof!

The Fiberglass Resin is a product to use for concrete, showers, and boats. Professionals have used it for decades, and it remains one of the most popular products on the market. Indoors or outdoors, you can apply it at any temperature, and it dries quickly, so there is no waiting for it to dry.

It is a two-part resin that works on fiberglass, metal, wood, and stone surfaces. Thanks to its chemical bonding properties, it creates an extremely strong bond. Lastly, the heavy-duty resin is perfect for bonding to any surface!

Bondo Fiberglass Pros And Cons


  • 100% waterproof
  • Strong, durable seal
  • It can be used on a variety of surfaces
  • The two-part formula creates a strong chemical bond


  • It May be difficult to use for those with no experience
  • Can be messy.

Read More: Best Adhesive For Brick

Benefits of Using Glue for Fiberglass

Fiberglass glues resist chipping, so they will keep your bond intact over time while offering strength and longevity. The longer it takes to find a chipped or cracked connection in the assembly, the better chance that section is still holding tight after years of wear and tear. 

Glues will make sure your project holds up under any condition. Your construction may be put through intense pressure throughout its lifetime, but with these durable bonds, the sections should stay together as long as needed.

In addition to being resistant to chipping and cracking, good glues also offer waterproofing qualities. Water cannot seep into your joints, causing them to leak or break down more quickly than usual.  

Other advantages include ease of application, reasonable price points, and plenty of variety.

Things to Consider Before Buying Best Glue for Fiberglass

1. Usability

What will you be using the glue for? You might consider a two-part epoxy if you need glue that dries quickly. Consider weatherproof glue if you need versatile glue that can be used on different materials.

2. Two Parts Epoxy

If you need glue that dries quickly, you might consider a two-part epoxy. This type of glue dries quickly and is excellent for different bonding materials.

3. Versatility

Consider weatherproof glue if you need versatile glue that can be used on different materials. This type of glue can be used on various materials, including wood, metal, and plastic.

4. Weatherproof

If you need glue that can be used in all weather conditions, consider weatherproof glue. This glue can withstand extreme temperatures and is great for outdoor use.

5. Ease of Use

How easy is the glue to use? If you need glue that is easy to use, then consider a two-part epoxy. This type of glue is easy to use and dries quickly.

6. Cost

How much does the glue cost? If you need affordable glue, then consider weatherproof glue. This glue is affordable and can be used in all weather conditions.

7. Strength

How strong is the glue? If you need glue that is strong and durable, then consider a two-part epoxy. This type of glue is strong and can bond different materials.

Does Fiberglass Bond To Wood?

Fiberglass does bond to wood. It can also bond to other materials, depending on the type of Fiberglass used. You can you fiberglass glue to attach wood to Fiberglass.

How To Bond Wood To Fiberglass?

Bonding wood to Fiberglass is a straightforward process that only requires glue, an adhesive, to fuse the two materials. 

Spread a thin layer of glue over both surfaces, then gently press them together for 10-15 seconds. 

Let the glued pieces sit for 15 minutes, then firmly clamp them together until the bond hardens, or use clamps or weights if you don’t have a large enough surface area. 

The thickness of the layer you put on will determine how long it takes to set. The thicker, the better, but remember that too much will make it difficult to scrape off the excess once dry. 

It’s always best to err on the side of caution when it comes to this particular type of project, as mistakes are challenging to fix later. Once hardened, you can use sandpaper or steel wool to remove any excess glue left behind before finishing with a top coat.

How to Apply Glue for Fiberglass to Fiberglass?

First, clean the surface where you plan to use the glue. Some products call for sanding or scraping, but if you do not know how thorough you need to be, just take care to avoid any dirt or dust particles. 

Second (and important), ensure that both surfaces are moisture-free by wiping them down with a rag dipped in alcohol or acetone. You want the wood’s grain and pores as dry as possible so that they can seal themselves to each other more quickly when you glue them together. 

Next, spread an even layer of glue on one of the pieces before placing it on top of the other piece. Press down firmly on both sides to adhere as closely as possible. If air bubbles are trapped under the pieces, pierce them with a toothpick and press out until they pop. 

Once everything is bonded, leave it alone to dry according to manufacturer instructions. If your materials were properly prepped, most would set up in about 30 minutes-1 hour; however, some glues may require overnight drying before you can re-coat with polyurethane or paint. 

Last Opinion

It’s no secret that there are a lot of different products on the market with complicated instructions. However, at this point, you may wonder what glue best suits your needs to build a strong and durable structure. 

We found the best options after examining product reviews and how they were made up. What should you do next?  

Pick out the product you want, read customer reviews to ensure it is right for you, and then buy it! 

If you have any more questions or concerns, email us, and we will answer them as soon as possible.

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