Best Fiberglass Tub Cleaner and Restorer in 2025
Updated on July 2025
#1
Recommended
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- Effectively addresses rust, dried fish blood, and leaf stains on fiberglass and painted surfaces
- Gel formula adheres to vertical surfaces for improved stain absorption and prevents drips
- Eliminates yellow tannic stains and persistent waterline stains from boat hulls and plastic surfaces
- Easy application: spray the stained area, let it sit, and rinse with water
- Gel spray allows for accurate targeting of stains with minimal runoff
- American-made product with a reputation for quality in marine and outdoor cleaning since 1973
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- Effectively addresses rust, dried fish blood, and leaf stains on fiberglass and painted surfaces
- Gel formula adheres to vertical surfaces for improved stain absorption and prevents drips
- Eliminates yellow tannic stains and persistent waterline stains from boat hulls and plastic surfaces
- Easy application: spray the stained area, let it sit, and rinse with water
- Gel spray allows for accurate targeting of stains with minimal runoff
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#2
Value for Money
39% Off
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- Effectively removes tough stains from boat hulls, fiberglass, plastic, and painted surfaces.
- Specially formulated to dissolve stubborn stains like rust, dried fish blood, and grass stains.
- New gel formula provides maximum cling for efficient cleaning, ideal for vertical surfaces.
- Contains user-friendly oxalic acid, safer than harsher alternatives like hydrochloric or phosphoric acid.
- Removes yellowing and scum lines while preserving the condition of fiberglass and painted boat hulls.
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- Effectively removes tough stains from boat hulls, fiberglass, plastic, and painted surfaces.
- Specially formulated to dissolve stubborn stains like rust, dried fish blood, and grass stains.
- New gel formula provides maximum cling for efficient cleaning, ideal for vertical surfaces.
- Contains user-friendly oxalic acid, safer than harsher alternatives like hydrochloric or phosphoric acid.
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#3
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- Non-abrasive formula effectively removes soap scum without scrubbing
- Suitable for multiple surfaces, including glass, ceramic, plastic, and chrome
- Simple spray-and-rinse application for a streak-free finish
- Recognized with several awards for cleaning effectiveness
- Manufactured in the USA with a focus on quality
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- Non-abrasive formula effectively removes soap scum without scrubbing
- Suitable for multiple surfaces, including glass, ceramic, plastic, and chrome
- Simple spray-and-rinse application for a streak-free finish
- Recognized with several awards for cleaning effectiveness
- Manufactured in the USA with a focus on quality
#4
16% Off
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- Effectively removes dirt and stains without heavy scrubbing
- Suitable for various surfaces including metal, fiberglass, and rubber
- Environmentally friendly formulation, phosphate-free and safe for aquatic environments
- Simple application: spray, spread, and rinse; may need repeat for tough stains
- Designed for boats, gently cleans without harming finishes
- Established brand with extensive experience in marine and outdoor products
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- Effectively removes dirt and stains without heavy scrubbing
- Suitable for various surfaces including metal, fiberglass, and rubber
- Environmentally friendly formulation, phosphate-free and safe for aquatic environments
- Simple application: spray, spread, and rinse; may need repeat for tough stains
- Designed for boats, gently cleans without harming finishes
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#5
16% Off
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- Gently cleans soap scum, grime, and body oils in showers and bathtubs without scrubbing.
- Weekly application with the included sprayer effectively removes buildup; allow 8-12 hours before rinsing with warm water.
- Safe for use on glass, porcelain, fiberglass, metal, sandstone, and tile; not recommended for natural marble; spot test before full application.
- Helps prevent hard water stains and calcium deposits with regular use; may require pre-cleaning for severe buildup.
- Scented with vanilla, this 64 Fl. Oz cleaner is free from bleach, ammonia, and dyes, providing approximately 12 weeks of cleaning power with weekly use.
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- Gently cleans soap scum, grime, and body oils in showers and bathtubs without scrubbing.
- Weekly application with the included sprayer effectively removes buildup; allow 8-12 hours before rinsing with warm water.
- Safe for use on glass, porcelain, fiberglass, metal, sandstone, and tile; not recommended for natural marble; spot test before full application.
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#6
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- Removes a variety of stains including dirt, exhaust, oil, rust, scum, and waterline marks from fiberglass gelcoat surfaces
- Deep-cleaning gel formula effectively lifts stains without harming the gelcoat
- Designed for easy application; let it sit for 10-15 minutes before rinsing
- Suitable for use on boats, RVs, shower stalls, fiberglass furniture, white-painted surfaces, and stainless steel
- 15 oz container, manufactured in the USA
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- Removes a variety of stains including dirt, exhaust, oil, rust, scum, and waterline marks from fiberglass gelcoat surfaces
- Deep-cleaning gel formula effectively lifts stains without harming the gelcoat
- Designed for easy application; let it sit for 10-15 minutes before rinsing
- Suitable for use on boats, RVs, shower stalls, fiberglass furniture, white-painted surfaces, and stainless steel
- 15 oz container, manufactured in the USA
#7
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- Specially formulated to eliminate residue from jetted bathtubs, Jacuzzis, and whirlpools.
- Effectively removes soap scum, body oils, and black flakes.
- Cleans in just 15 minutes with easy application: add to water and activate jets.
- Tested for efficacy in both lab and real-world conditions to ensure thorough cleaning.
- One bottle offers up to four cleanings, providing excellent value.
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- Specially formulated to eliminate residue from jetted bathtubs, Jacuzzis, and whirlpools.
- Effectively removes soap scum, body oils, and black flakes.
- Cleans in just 15 minutes with easy application: add to water and activate jets.
- Tested for efficacy in both lab and real-world conditions to ensure thorough cleaning.
- One bottle offers up to four cleanings, providing excellent value.
#8
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- Formula cleans fiberglass and gel coat surfaces while providing a high-gloss finish in one step.
- Effectively removes heavy oxidation, scratches, stains, and tough water spots from fiberglass gel coat marine and RV surfaces.
- Enhances shine and luster while rejuvenating neglected surfaces.
- Restores color and maintains a rich gloss.
- Suitable for both hand and machine application with impressive results.
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- Formula cleans fiberglass and gel coat surfaces while providing a high-gloss finish in one step.
- Effectively removes heavy oxidation, scratches, stains, and tough water spots from fiberglass gel coat marine and RV surfaces.
- Enhances shine and luster while rejuvenating neglected surfaces.
- Restores color and maintains a rich gloss.
- Suitable for both hand and machine application with impressive results.
#9
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- Effective foam cleaner for tiles and bathtubs, providing a fresh scent without harsh odors.
- Versatile cleaner suitable for tile, grout, fixtures, sinks, toilets, bathtubs, and shower doors; not effective on rust or iron stains.
- Gentle formula free from petroleum solvents, chlorine, bleach, alcohols, parabens, and sulfates to protect eyes, skin, and respiratory health.
- Eco-friendly cleaning solution utilizing plant-derived ingredients, safe for children and pets.
- For optimal results, apply and let it sit for 5 to 10 minutes; includes one reusable sprayer with two-pack purchases.
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- Effective foam cleaner for tiles and bathtubs, providing a fresh scent without harsh odors.
- Versatile cleaner suitable for tile, grout, fixtures, sinks, toilets, bathtubs, and shower doors; not effective on rust or iron stains.
- Gentle formula free from petroleum solvents, chlorine, bleach, alcohols, parabens, and sulfates to protect eyes, skin, and respiratory health.
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#10
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- High viscosity creates a waterproof, protective layer, ensuring fast drying and safeguarding against scratches, chips, and rust with excellent heat retention.
- Compatible with a variety of colors including white, cream, gray, and black; effectively repairs chips, cracks, and holes without the need for additional primer or paint.
- Formulated with safe, odorless materials that are skin-friendly; pigments aid in forming a durable, insulating layer that resists water and adheres well to fiberglass and acrylic surfaces.
- Cost-effective solution that eliminates the need for expensive repair services; compatible with all bathtub paints, yielding professional-quality results while saving time and money.
- Satisfaction guarantee ensures issues are addressed; replacement or full refund available if the product does not meet expectations.
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- High viscosity creates a waterproof, protective layer, ensuring fast drying and safeguarding against scratches, chips, and rust with excellent heat retention.
- Compatible with a variety of colors including white, cream, gray, and black; effectively repairs chips, cracks, and holes without the need for additional primer or paint.
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