Best Fiberglass Resin for Boats and Yachts

Best Fiberglass Resin for Boats

When boat construction switched from wood to fiberglass, fiberglass resins became important for building and molding the hull, deck, and other parts of the boat. Boat owners continue to search out the best fiberglass resin for boats.

In the following review, we looked at a number of fiberglass resins and a few supplements to help you get a look at the varieties and price range of products available for boat and yacht owners. Whether you build boats, own boats, or repair boats, you are sure to find a worthwhile fiberglass resin on our list.

Product FAQ

1. What Is Fiberglass Resin?

2. What Are the Types of Fiberglass Resin?

3. What Makes a Good Resin?

How We Reviewed the Best Fiberglass Resin for Boats

We reviewed best fiberglass resin for boats and related products based on their features, price range, availability, and uses. Boaters have a very wide range of interests and needs, and we tried to compile a list of products to review that met a wide array of those needs.

Among the products we reviewed, some are marketed specifically for repairs. We looked at a repair kit as well as paste and other repair products. Other resin products have a wider array of uses, but there are still many variables. Some are meant to be base coats only, and others are meant to be finishing coats.

We attempted to highlight a variety of items that fit a variety of needs, and we feel certain there is a product on our list for every boater.

Overall Price Range

The best fiberglass resin for boats and related products on our list had a wide range of prices as we expected based on our wide range of products. We were diligent to try to make fair price comparisons in an apples-to-apples way.

First, we looked at the capacity of each product, whether the price was for a pint, a quart, or a gallon. We made proportional ratings among products with similar uses. However, other products did not have similar uses, so the capacity of resin in a kit made for repairing scratches is not going to be as much as a resin by the gallon to coat entire decks and hulls.

The prices on our list ultimately ranged from a repair kit around $30 to a gel coat over $50 per quart to resin by the gallon under $100. It is important to understand the type of product you need and understand your own budget accordingly as you search for the best fiberglass resin for boats.

What We Reviewed

  • Fibre Glast - Polyester Molding Resin
  • WEST SYSTEM 105-K Fiberglass Boat Repair Kit
  • TotalBoat Polyester Laminating Resin
  • Fibre Glast - Isophthalic Polyester Resin - 1 Gallon with Hardener
  • FIBRE GLASS-EVERCOAT CO Premium Marine Resin Quart
  • TotalBoat Polyester Finishing Resin
  • Fibre Glast - Styrene Wax - 1 Quart
  • Evercoat Laminating Resin
  • Evercoat 100695 Polyester Gel Paste - Pint
  • Fibre Glast - Black Tooling Gel Coat
Fibre Glast - Polyester Molding Resin - 1 Gallon with Hardener - General Purpose Resin for Part and Mold Fabrication
  • ALL-PURPOSE - Ideal for part fabrications, low-cost molds and general use
  • HIGH THIXOPTROPIC INDEX - Unique thickening agent prevents drainage on vertical surfaces
  • SIMPLE TO USE - Low viscosity, fast wet-out, mixes and pours easily, 25-minute pot life
  • WAX-FREE - No need to sand between coats
  • BACKED BY OUR "FIRST QUALITY" GUARANTEE - Fibre Glast is committed to ensuring that the products we handle are always "First Quality" and manufactured in the USA to the highest standards

Features

Fibre Glast's Polyester Molding Resin is a perfect product for building projects and low-cost molds. It contains a thickening agent that supports a high thixotropic index, meaning it holds its shape when pressure and wear is increased.

As one of the best fiberglass resin for boats, it keeps a low viscosity for minimal resistance in the water. The consistency and color of the resin remain consistent between batches. It is sand-free and requires no sanding between coats.

It can be purchased alone or as part of a Resin and Hardener Kit.

West System Fiberglass Boat Repair Kit
  • All components are contained in a sturdy, resealable package

Features

This WEST SYSTEM is a kit meant for repairing cracks, scrapes, and blisters. It comes with WEST SYSTEM 105 resin along with 205 Fast Hardener, fiberglass fabric, adhesive filler, fairing filler, blue brushes, mixing pots, reusable mixing stick, application syringe, and three pairs of protective gloves.

This is the perfect item for a boat owner who needs to repair his fiberglass boat but does not need a full gallon of resin and does not have extensive plans for building or making a lot of molds.

The WEST SYSTEM 105-K Fiberglass Boat Repair Kit includes detailed instructions for DIYers, and the packaging can be stored on your vessel.

TotalBoat Polyester Laminating Resin
  • Excellent base coat for laminating applications. No sanding between coats
  • Remains tacky to hold fiberglass and other composite cloth in place
  • Available in Quart and Gallon sizes.
  • Excellent for saturating fiberglass fabrics
  • Used extensively in composite construction, especially boat repair and building

Features

This TotalBoat product is intended as a first coat for fiberglass boat products. As a wax-free product, the resin is tacky to hold the fiberglass in place on vertical surfaces. Because it has no wax, there is no sanding needed before adding other coats.

As one of the best fiberglass resin for boats, an MEKP (methyl ethyl ketone peroxide) catalyst included. It comes with a quart-sized plastic mixing pot, a ten-inch wooden stir stick, and a pair of powder-free latex gloves.

Fibre Glast - Isophthalic Polyester Resin - 1 Gallon with Hardener - High Strength - Durable
  • IDEAL FOR FABRICATION AND REPAIRS - Perfect for making dimensionally stable polyester molds, fabrication of corrosive service parts and as a durable repair material for tank linings
  • HIGH PERFORMANCE - Stonger than general purpose polyester resin; resists exotherm and post cure problems
  • EASY TO USE - Spray or hand application, fast wet-out, 24-minute pot life
  • MEETS SPECIFICATIONS FOR DEMANDING APPLICATIONS - Properly fabricated parts may be used in food contact, electrical and military applications
  • BACKED BY OUR "FIRST QUALITY" GUARANTEE - Fibre Glast is committed to ensuring that the products we handle are always "First Quality" and manufactured in the USA to the highest standards

Features

Whether you are building boats or repairing boats, the Fibre Glast – Isophthalic Polyester Resin is ideal for stable polyester molds. It is also a durable repair material that offers high-performance resistance to exotherm and post cure difficulties.

As a best fiberglass resin for boats, it can be applied by spraying or with by hand, and it features a 24-minute gel time. Fibre Glast – Isophthalic Polyester Resin comes with a “First Quality Guarantee” and is made in the USA. It can be purchased individually or as part of a Resin and Hardener Kit.

FIBRE GLASS-EVERCOAT CO Premium Marine Resin Quart
  • For softwoods and fiberglass
  • For all boat surfaces
  • Helps protect from moisture related damage
  • Liquid hardener is included

Features

Sold by the quart, Premium Marine Resin is perfect for boat repairs. It can be used on soft wood or fiberglass and it does not run.

Whether used to repair hulls, decks, or tanks, it protects against moisture. A liquid hardener is included.

TotalBoat Polyester Finishing Resin
  • Polyester finishing resin for repairs and building
  • Cures clear, sandable, and tack-free over composites, wood, and metal
  • Easy to mix and sets up well with medium viscosity to prevent sagging on vertical surfaces
  • Contains wax to allow for proper curing. Resists scratches and staining
  • Available in Quart and Gallon sizes. Includes MEKP hardener

Features

TotalBoat offers this polyester finishing resin for folks repairing boats or building from scratch. The product cures clear on fiberglass, wood, or metal. It is able to be sanded for multiple coats.

As a user-friendly product and one of the best fiberglass resin for boats, it mixes easily and set up well to prevent sagging on a vertical surface. It is considered a medium-viscosity product that contains wax for curing. It also resists scratches and stains.

Your purchase also includes MEKP (methyl ethyl ketone peroxide) catalyst along with a quart-sized plastic mixing pot, a 10-inch stir stick, and a pair of powder-free latex gloves.

Features

Not an actual resin, Styrene is used as a thinner for polyester and vinyl ester resins and gel coats. Polyester resins contain styrene monomers. That is typically sufficient for a suitable thickness, but Fibre Glast Styrene Wax can be useful for achieving a lower viscosity.

You should not add styrene at no more than 5 percent or you risk compromising the integrity of the resin or gel coat. If you want to add Styrene Wax to your resin, you should be sure to add it to non-wax resins.

Styrene Wax included Fibre Glast's “First Quality” guarantee.

Evercoat Laminating Resin
  • Laminating resin
  • First coat resin, laminating type, for base coat applications
  • Not a finish coat

Features

Evercoat's Laminating Resin is a tacky resin that holds fiberglass in place on vertical surfaces. it contains catalysts and is not intended for final coats.

The polyester laminating resin has a four-hour cure time. Extra coats can be added at 30-minute intervals. No sanding is necessary between intervals. The Evercoat Laminating Resin is useful for saturating fiberglass fabrics, but it is not for the last layer of laminations.

Be sure to lay up with a final coat polyester resin. A liquid hardener is included.

Evercoat 100695 Polyester Gel Paste - Pint
  • Gel coat quality in a paste
  • Repair larger areas of gel coat scratches, nicks and gouges
  • Mix paste with Evercoat Color agents to match the gel coat's original color
  • Neutral paste will make permanent repairs on gel coat and fiberglass panels
  • Will also adhere to most woods and metals

Features

This Evercoat product is a paste used for permanent gel coat boat repairs. It covers gouges, scratches, and nicks. Along with fiberglass, Evercoat 100695 Gel Paste adheres to woods and metals.

To obtain a particular color match, the paste can be mixed with Evercoat Color agents.

Fibre Glast - Black Tooling Gel Coat - 1 Quart with Hardener - Build Lasting Durability for Molds
  • EXTEND MOLD LIFE - The life of a good polyester mold may be extended considerably by the use of tooling gel coat
  • EXCELLENT CONTRAST - Easily gauge the gel coat coverage and tell the difference between finished part and mold
  • HIGH PERFORMANCE - Abrasion-resistant, high gloss, superior hardness, exceptional craze resistance, minimum distortion
  • BACKED BY OUR "FIRST QUALITY" GUARANTEE - Fibre Glast is committed to ensuring that the products we handle are always "First Quality" and manufactured in the USA to the highest standards

Features

Fibre Glast's Black Tooling Gel Coat is a gel coat used for making molds that require extra hardness, high gloss, and minimal distortion. it is also made to be abrasion resistant.

This gel coat product can extend the life of a polyester mold and should be built to 20-25 mils for best thickness. One gallon of gel coat covers between 40-80 square feet. You can also add high-gloss additives from Fibre Glast.

Users find it easy to see the covered and uncovered areas in order to gauge the finished areas against the mold. This another of Fibre Glast's products that offer their “First Quality” guarantee.

The Verdict on the Best Fiberglass Resin for Boats

Fibre Glast - Isophthalic Polyester Resin - 1 Gallon with Hardener - High Strength - Durable

Image via Amazon

Reaching a verdict on the best fiberglass resin for boats is a difficult task. Ultimately the best resin for you is specifically based on your unique needs, preferences, and budget.

In attempting to give a verdict, we tried to look at products that offered a wide variety of uses to suit the most buyers. With that in mind, we gave our official nod of approval to the Fibre Glast – Isophthalic Polyester Resin.

This resin is useful for major building projects to DIY repairs and everything in between. Its resistance to heat and ability to cure without unwanted problems make is a coveted resin.

Depending on your style, you can spray or brush, and it gels in under a half hour. We also truly appreciate the “First Quality” guarantee and the ability to buy it individually or within a kit.

HONORABLE MENTION

West System Fiberglass Boat Repair Kit

Image via Amazon

We were also compelled to give a thumbs-up to the 105-K Fiberglass Boat Repair Kit for repairing cracks and scrapes. This is a noteworthy product because it serves a specific purpose for a specific repair.

The kit is complete with supplies, so you do not have to worry about buying sticks, syringes, brushes, or mixing pots. It also gives very precise directions for the DIYer fixing his boat who does not have an extensive boat building background.

It also allows the work to be done a low price points. If you are a boat owner wanting to make a simple repair, take time to look at the WEST SYSTEM 105-K Fiberglass Boat Repair Kit.

Featured Image: Image via Amazon

LEAVE A REPLY

Please enter your comment!
Please enter your name here