Best Boat Cleaners for Fiberglass of 2025

Jason Kiser Avatar
Jason Kiser
Last Updated: Jan 8, 2025

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Boat owners who are looking for a reliable and effective way to clean their fiberglass vessels can turn to boat cleaners specifically designed for this purpose. These cleaners are formulated to remove dirt, grime, and stains from the fiberglass surface without causing any damage or discoloration. They come in various forms, including sprays, gels, and solutions, and can be applied with a sponge, brush, or cloth. Some boat cleaners for fiberglass also contain special additives that protect the surface from UV rays and other environmental factors. With regular use, these cleaners can keep fiberglass boats looking clean and fresh for years to come.

At a Glance: Our Top Picks

STAR BRITE Instant Hull Cleaner - Gel Spray Formula Cover #TOP 1
STAR BRITE Instant Hull Cleaner - Gel Spray Formula
ftb score rating icon 9.8
STAR BRITE Instant Hull Cleaner - 1 GAL (081700N) Cover #TOP 2
STAR BRITE Instant Hull Cleaner - 1 GAL (081700N)
ftb score rating icon 9.7
Boat Juice Exterior Boat Cleaner Spray Cover #TOP 3
Boat Juice Exterior Boat Cleaner Spray
ftb score rating icon 9.5

Top 10 Boat Cleaners for Fiberglass

#TOP 1

STAR BRITE Instant Hull Cleaner - Gel Spray Formula

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STAR BRITE Instant Hull Cleaner - Gel Spray Formula Cover
STAR BRITE Instant Hull Cleaner - 32 Oz Gel Spray - Easily Remove Stains, Scum Lines & Grime on Boat Hulls, Fiberglass, Plastic & Painted Surfaces - Easy to Use Formula (096132)

The STAR BRITE Instant Hull Cleaner is a new gel spray formula that can easily remove stains from boat hulls, fiberglass, plastic, and painted surfaces. It instantly removes marine growth, rust, scum line, yellowing, and fish blood without needing hard rubbing or scrubbing. The gel spray formula also clings to the underside of boats and other vertical surfaces, making it easier to use. This hull cleaner is safe for use on fiberglass and painted surfaces, and it is made with pride in the USA.

What We Like
Removes stains instantly
No hard rubbing or scrubbing required
Can be used on fiberglass and painted surfaces
#TOP 2

STAR BRITE Instant Hull Cleaner - 1 GAL (081700N)

081700N
128 oz
STAR BRITE Instant Hull Cleaner - 1 GAL (081700N) Cover
STAR BRITE Instant Hull Cleaner - Easily Remove Stains, Scum Lines & Grime for Boat Hulls, Fiberglass, Plastic & Painted Surfaces - Wipe On, Rinse Off Formula - 128 Ounce Gallon (081700)

STAR BRITE Hull Cleaner is an effective solution to remove unsightly grime, yellowing, and waterline stains from boat hulls. It is formulated to start working on contact, making it effortless to clean rust or leaf stains from fiberglass or painted surfaces. One of the best benefits of this cleaner is that it will not harm the surface being cleaned and is an ideal preparation for polishing the hull. Its quick and easy application saves you time and energy. Proudly made in the United States since 1973, STAR BRITE Hull Cleaner is a reliable option for any boat owner looking to keep their boat looking its best.

What We Like
Effortlessly removes grime and stains
Does not harm the surface being cleaned
Prepares hull for polishing
#TOP 3

Boat Juice Exterior Boat Cleaner Spray

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32 Oz
Boat Juice Exterior Boat Cleaner Spray Cover
Boat Juice Exterior Boat Cleaner - Water Spot Remover for Boats and Ceramic Sealant - Boat Cleaner for Fiberglass, Boat Wax Spray - Boat Cleaning Supplies and Detailing, Boat Accessories Marine (32oz)

Boat Juice Cleaner Spray is a boat cleaning product that combines cleaning and protection in one step. The 32-ounce bottle contains a SiO2 ceramic sealant that leaves your boat glossy and spot-free. It is a powerful cleaner that removes mineral deposits and hard water spots easily. Unlike other cleaning products, Boat Juice Cleaner Spray has a tropical aroma that makes wiping down a pleasant experience. It is also easy to use, just spray on and wipe off. The cleaner is safe for all finishes including gelcoat, chrome, glass, vinyl, and plastics. Boat Juice Cleaner Spray is a must-have for boat owners looking for an efficient and effective cleaning solution.

What We Like
Cleans and protects in one step
Removes mineral deposits and hard water spots
Pleasant tropical aroma
#TOP 4

STAR BRITE Heavy Duty Boat Cleaner

092232P
STAR BRITE Heavy Duty Boat Cleaner Cover
STAR BRITE Heavy Duty Boat Bottom Cleaner - Fiberglass, Wood, Iron, Painted Surfaces & More, 32oz (092232P)

STAR BRITE Boat Cleaner features an advanced cleaning formula that makes boat maintenance a breeze. You simply apply it, wait, and rinse, allowing stubborn marine deposits to dissolve quickly. Its compatibility with multiple surfaces like fiberglass, metal, and wood means you can use it on various boat hulls without worry. This highly concentrated cleaner ensures you get professional results with minimal product usage, saving you time and money. Plus, it simplifies the cleaning process, making it suitable for both experienced and new boaters looking for an efficient solution.

What We Like
Effective marine deposit removal
Works on multiple surfaces
Concentrated for cost efficiency
Simplifies cleaning process
#TOP 5

Marinamax Hull Cleaner

Marinamax
Clear
Marinamax Hull Cleaner Cover
Marinamax Instant Hull Cleaner 32 Oz - Removes Boat Hull Stains, Scum Lines, Algae, Barnacles, Rust and Grime from Fiberglass, Plastic, and Painted Surfaces

Marinamax Boat Hull Cleaner is a powerful solution for removing tough stains like rust, algae, and grime from fiberglass, plastic, and painted boat surfaces. It efficiently cleans while protecting your boat. This cleaner pulls dirt to the surface for easy wiping, restoring the original sheen. Regular use keeps your boat clean and protected. The formulation is safe for you and the environment, utilizing naturally occurring oxalic acid. Made in the USA, it's a reliable choice for boat owners.

What We Like
Efficient cleaning action
Tough on stains
Polishes and protects
#TOP 6

Premium Boat Scuff Erasers

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White
3pack
Premium Boat Scuff Erasers Cover
Premium Boat Scuff Erasers | Boating Accessories Gifts for Cleaning Boat Accessories or Gift for Pontoon Fishing Jon Boats Decks Vinyl Boat Cleaner Hull Cleaner Gadgets for Men and Women

The Premium Boat Scuff Erasers are perfect for cleaning your boat's accessories and surfaces. They can remove dirt, grime, grease, salt, mud, and scuffs from the deck, console, hull, and seats of your boat. These erasers are safe to use on various surfaces such as fiberglass, leather, vinyl, plastic, aluminum, gelcoat, and metal. They also do not contain any harsh corrosive chemicals or bleach. Furthermore, the extra thick sponges offer a reinforced core for durability, making them an essential boating accessory and gift. Better Boat Products is a family-owned American business that ensures customer satisfaction and quality products.

What We Like
Removes dirt, grime, grease, salt, mud, and scuffs from various surfaces.
Safe to use on fiberglass, leather, vinyl, plastic, aluminum, gelcoat, and metal surfaces.
Does not contain harsh corrosive chemicals or bleach.
Extra thick sponges offer a reinforced core for durability.
Better Boat Products is a family-owned American business that ensures customer satisfaction and quality products.
#TOP 7

STAR BRITE Ultimate Xtreme Clean

083222P
No Color
STAR BRITE Ultimate Xtreme Clean Cover
STAR BRITE Ultimate Xtreme Clean - Multi-Surface Cleaner & Degreaser, Perfect for Vinyl, Carpet, Fiberglass, Plastic, Rubber, Metal, Painted Surfaces - 22 OZ (083222P)

The STAR BRITE Multi-Surface Cleaner is designed for powerful cleaning action, breaking the grip of dirt and stains without the need for heavy scrubbing. You can use it on various surfaces, including metal, fiberglass, plastic, and rubber, making it incredibly versatile for different cleaning tasks. Its easy application process allows you to spray, let it sit, and then simply wipe or brush it away, saving you time and effort. This cleaner effectively tackles tough stains, ensuring that even the most stubborn dirt and grease are removed, leaving your surfaces spotless.

What We Like
Powerful cleaning action
Multi-surface versatility
Easy application process
Effectively removes tough stains
#TOP 8

RMR-86M Marine Stain Remover

RMR-86M Marine Stain Remover Cover
RMR-86M Marine Stain Remover, Professional-Strength Mold Stain & Mildew Stain Eliminating Cleaning Spray For Boats & Marine Surfaces, 32 oz

The RMR Marine Stain Remover is designed to tackle tough mold and mildew stains on your boat. With its powerful formula, it works quickly to lift deeply embedded stains without the need for excessive scrubbing. This means you can enjoy more time on the water and less time cleaning. Safe for various surfaces, including vinyl and fiberglass, it ensures your boat stays in top shape. Simply mist the spray, wait 30 seconds, and rinse for a simple cleaning process that yields impressive results.

What We Like
Effective stain removal
Fast-acting formula
Safe for multiple surfaces
Easy application process
#TOP 9

Collinite 920 & 925 Fiberglass Boat Cleaner and Wax Combo Pack

920&925
Collinite 920 & 925 Fiberglass Boat Cleaner and Wax Combo Pack Cover
COLLINITE 920 Fiberglass Boat Cleaner & 925 Fiberglass Boat Wax Combo Pack

The Collinite 920 Fiberglass Boat Cleaner & 925 Fiberglass Boat Wax Combo Pack includes one 16oz. bottle of fiberglass boat cleaner and one 16oz. bottle of fiberglass boat wax. The cleaner is designed to restore neglected fiberglass finishes affected by weathering, and the wax enhances the look while protecting the finish. The cleaner preps the surface for follow-up wax shine and protection. The wax provides an excellent coating of durability, keeping your boat protected from damaging elements.

What We Like
Restores neglected fiberglass finishes
Enhances look while protecting finish
Provides excellent durability
#TOP 10

Boat Juice Boat Wash & Shine

BJ-WAS-32
Pink
Boat Juice Boat Wash & Shine Cover
Boat Juice Boat Wash & Shine - Boat Wash Soap, Boat Wash & Wax, Boat Soap Marine, Boat Soap & Wax, Boat Cleaner for Fiberglass, Hull, Deck, Vinyl, Boat Cleaning - pH Neutral, Bubble Gum Scent (32oz)

Boat Juice Cleaner offers a safe and effective solution for keeping your boat clean. It effortlessly tackles tough dirt and grime without harming any existing wax on your boat. You can enjoy a dazzling shine thanks to the high gloss agents infused in the formula, which ensures your boat looks its best. Additionally, it is gentle on all surfaces, making it suitable for materials like gelcoat, chrome, and vinyl. Plus, with its delightful bubble gum scent, cleaning becomes a more enjoyable task for you.

What We Like
Safe for wax protection
Creates a brilliant shine
Gentle on various surfaces
Pleasant bubble gum scent
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is the best thing to clean a fiberglass boat with?

If you want your fiberglass boat to regain some of its lost luster, a simple soap and water wash is the easiest first step to follow. Rinse off your boat with warm, clean fresh water. Use a specialized boat cleaning soap, and follow the instructions for mixing amounts into a bucket of water.

2. What cleaner can you use on fiberglass?

Cleaning fiberglass is easy using warm water, white vinegar, and other household cleaning products. You can even use these cleaning solutions to clean a boat.

Editor's Notes

During our boat cleaner for fiberglass research, we found 24 boat cleaner for fiberglass products and shortlisted 10 quality products. We collected and analyzed 62,203 customer reviews through our big data system to write the boat cleaners for fiberglass list. We found that most customers choose boat cleaners for fiberglass with an average price of $19.17.

The boat cleaners for fiberglass are available for purchase. We have researched hundreds of brands and picked the top brands of boat cleaners for fiberglass, including STAR BRITE, Boat Juice, Marinamax, Better Boat, RMR Brands. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Jason Kiser Avatar

Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.