Best Antifouling Paint For Fiberglass

Peter | 03-01-2026

Navigating the many Best Antifouling Paint For Fiberglass options on the market – from major brands like TotalBoat,Rust-Oleum,Interlux to lesser-known names – can feel overwhelming. But we’re here to help simplify your search for the best products.

After extensive research testing hundreds of Best Antifouling Paint For Fiberglass, we’ve selected the top contenders. Our number one recommendation is TotalBoat Best Antifouling Paint For Fiberglass based on its stellar performance and quality. Below you’ll find more of our top-rated picks for the best Best Antifouling Paint For Fiberglass currently available.

Be sure to consult our handy buying guide as well for expert tips on choosing the right Best Antifouling Paint For Fiberglass to suit your individual needs. It has all the crucial information you need to make an informed purchasing decision. With our guidance backing your choice, finding your perfect match will be smooth sailing!

Editor's Choice
TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Black,
TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Black,
Premium Pick
TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats, (Black,
TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats, (Black,
Budget Pick
TotalBoat TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats
TotalBoat TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats

Top 10 Best Antifouling Paint For Fiberglass

We researched and compared the top products in the Best Antifouling Paint For Fiberglass category to provide you with these recommendations.

1. TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Black,

TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Black,
9.8

Totalboat

Check Price On Amazon
  • ECONOMICAL ANTIFOULING BOTTOM PAINT provides excellent single-season protection; copper biocide keeps barnacles and mussels from clinging to hull bottoms; ideal for sailboats, power boats, fishing and work boats in all types of saltwater conditions
  • EFFECTIVE MARINE PAINT prevents barnacles from attaching to your hull by releasing fresh biocide as water moves under the boat; best for boats used frequently; durable finish withstands trailering & beaching better than traditional ablative paints
  • FOR USE ON PROPERLY PREPARED FIBERGLASS, WOOD, STEEL, AND IRON BOAT BOTTOMS; because the ablative coating wears away during the season, there's no paint buildup, which makes your bottom paint job easier next season
  • EASY TO APPLY: Use a natural bristle brush, or a 3/16 nap or foam solvent-safe roller, or use airless or conventional spray equipment. THINNING (10%): brush/roller - TotalBoat Special Brushing Thinner 100; spray equipment - TotalBoat Spray Thinner 101
  • AVAILABLE IN GALLON SIZE IN BLACK, BLUE AND RED COLORS. Coverage: 500 sq ft per gallon; this product is a marine paint intended for antifouling use on boats, applied to hulls and boat bottoms below the waterline only; it is not intended for household use

2. TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats, (Black,

TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats, (Black,
9.5

Totalboat

Check Price On Amazon
  • ANTIFOULING PAINT FOR BOATS: Unique hybrid paint film keeps barnacles, weeds and slime from clinging to the bottom of your power boat or sailboat for a full season; ideal for fiberglass, wood and steel boats in salt water and fresh water
  • ABLATIVE BOTTOM PAINT: Self-polishing coating wears away gradually as the boat moves through the water; minimizes bottom paint build up so you have less sanding to do next season; durable finish can be burnished for smoothness, speed & fuel efficiency
  • LOW ODOR, LOW VOCs, EASY CLEANUP: This low-VOC, water-based marine paint has no toxic fumes, and cleans up easily with soap and water; ideal for use in marinas and boat yards with environmental restrictions; no maximum dry time before launch
  • EASY TO APPLY BY BRUSH, ROLLER OR SPRAY: Brush - natural bristle; Roller - 3/16 nap or foam solvent-safe cover; Spray - airless or conventional; if needed, thin with water, up to 10%; apply 1-2 thin coats; no sanding needed between coats
  • AVAILABLE IN BLACK, BLUE, GREEN & RED COLORS in Quart and Gallon sizes; Coverage: 500 sq. ft. per gallon. Compatible with most previously applied bottom paints: Apply over existing ablative or hard bottom paints; for use on boat bottoms & hulls below waterline only

3. Rust-Oleum 396967​ Marine Flat Boat Bottom Antifouling Paint, Quart, Black

Rust-Oleum 396967​ Marine Flat Boat Bottom Antifouling Paint, Quart, Black
7.9

Rust-oleum

Check Price On Amazon
  • Ideal for use on fiberglass, wood or steel surfaces to prevent fouling below the waterline
  • Formulated to slowly release copper in order to prevent fouling
  • Able to recoat in 4 hours, to launch in 16 hours and covers up to 110 sq ft
  • Protective coating resists buildup of barnacles, algae and other marine growth
  • Hard, smooth finish provides a flat sheen over most aged antifouling coatings

4. Interlux YBB379/1 Fiberglass Bottomkote NT Antifouling Paint - Black, Gallon

Interlux YBB379/1 Fiberglass Bottomkote NT Antifouling Paint - Black, Gallon
7.7

Interlux

Check Price On Amazon
  • Optimizes the benefits of hard and ablative paints through a unique Dual Resin approach
  • Coating prevents premature wear-through yet a slow polishing action minimizes unnecessary paint build-up
  • Surface continuously smoothes with use, providing a fast, fuel efficient coating
  • Cost effective choice for all power and sail boats and in all waters
  • Paint Color: Black
  • Flash point: 27.0 degrees_celsius

5. TotalBoat TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats

TotalBoat TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats
8.7

Totalboat

Check Price On Amazon
  • ANTIFOULING PAINT FOR BOATS: Unique hybrid paint film keeps barnacles, weeds and slime from clinging to the bottom of your power boat or sailboat for a full season; ideal for fiberglass, wood and steel boats in salt water and fresh water
  • ABLATIVE BOTTOM PAINT: Self-polishing coating wears away gradually as the boat moves through the water; minimizes bottom paint build up so you have less sanding to do next season; durable finish can be burnished for smoothness, speed & fuel efficiency
  • LOW ODOR, LOW VOCs, EASY CLEANUP: This low-VOC, water-based marine paint has no toxic fumes, and cleans up easily with soap and water; ideal for use in marinas and boat yards with environmental restrictions; no maximum dry time before launch
  • EASY TO APPLY BY BRUSH, ROLLER OR SPRAY: Brush - natural bristle; Roller - 3/16 nap or foam solvent-safe cover; Spray - airless or conventional; if needed, thin with water, up to 10%; apply 1-2 thin coats; no sanding needed between coats
  • AVAILABLE IN BLACK, BLUE, GREEN & RED COLORS in Quart and Gallon sizes; Coverage: 500 sq. ft. per gallon. Compatible with most previously applied bottom paints: Apply over existing ablative or hard bottom paints; for use on boat bottoms & hulls below waterline only

6. TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Blue,

TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Blue,
8.5

Totalboat

Check Price On Amazon
  • ANTIFOULING PAINT FOR BOATS: Unique hybrid paint film keeps barnacles, weeds and slime from clinging to the bottom of your power boat or sailboat for a full season; ideal for fiberglass, wood and steel boats in salt water and fresh water
  • ABLATIVE BOTTOM PAINT: Self-polishing coating wears away gradually as the boat moves through the water; minimizes bottom paint build up so you have less sanding to do next season; durable finish can be burnished for smoothness, speed & fuel efficiency
  • LOW ODOR, LOW VOCs, EASY CLEANUP: This low-VOC, water-based marine paint has no toxic fumes, and cleans up easily with soap and water; ideal for use in marinas and boat yards with environmental restrictions; no maximum dry time before launch
  • EASY TO APPLY BY BRUSH, ROLLER OR SPRAY: Brush - natural bristle; Roller - 3/16 nap or foam solvent-safe cover; Spray - airless or conventional; if needed, thin with water, up to 10%; apply 1-2 thin coats; no sanding needed between coats
  • AVAILABLE IN BLACK, BLUE, GREEN & RED COLORS in Quart and Gallon sizes; Coverage: 500 sq. ft. per gallon. Compatible with most previously applied bottom paints: Apply over existing ablative or hard bottom paints; for use on boat bottoms & hulls below waterline only

7. TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Blue,

TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Blue,
8.7

Totalboat

Check Price On Amazon
  • ECONOMICAL ANTIFOULING BOTTOM PAINT provides excellent single-season protection; copper biocide keeps barnacles and mussels from clinging to hull bottoms; ideal for sailboats, power boats, fishing and work boats in all types of saltwater conditions
  • EFFECTIVE MARINE PAINT prevents barnacles from attaching to your hull by releasing fresh biocide as water moves under the boat; best for boats used frequently; durable finish withstands trailering & beaching better than traditional ablative paints
  • FOR USE ON PROPERLY PREPARED FIBERGLASS, WOOD, STEEL, AND IRON BOAT BOTTOMS; because the ablative coating wears away during the season, there's no paint buildup, which makes your bottom paint job easier next season
  • EASY TO APPLY: Use a natural bristle brush, or a 3/16 nap or foam solvent-safe roller, or use airless or conventional spray equipment. THINNING (10%): brush/roller - TotalBoat Special Brushing Thinner 100; spray equipment - TotalBoat Spray Thinner 101
  • AVAILABLE IN GALLON SIZE IN BLACK, BLUE AND RED COLORS. Coverage: 500 sq ft per gallon; this product is a marine paint intended for antifouling use on boats, applied to hulls and boat bottoms below the waterline only; it is not intended for household use

8. Interlux Fiberglass Bottomkote NT, 1 Gallon, Blue, Antifouling Marine Paint for Boats

  • BEST IN CLASS

9. TotalBoat Krypton Copper Free Antifouling – Marine Ablative Boat Bottom Paint | for Fiberglass,

TotalBoat Krypton Copper Free Antifouling – Marine Ablative Boat Bottom Paint | for Fiberglass,
8.5

Totalboat

Check Price On Amazon
  • HIGH-PERFORMANCE MARINE ANTIFOULING BOAT BOTTOM PAINT provides superior single-season protection against barnacles, weeds, algae & slime in fresh water, salt water, and brackish water
  • COPPER FREE FORMULA won't cause galvanic corrosion on aluminum boats, outdrives and trim tabs; copper-free paint also means colors are much brighter than bottom paint that contains copper biocide
  • FOR USE ON FIBERGLASS, WOOD, STEEL, IRON & ALUMINUM BOATS below the waterline only; haul and relaunch without losing the effectiveness of the biocide
  • EASY TO APPLY: For brushing, use a high-quality, natural bristle brush; for rolling, use a 3/16 nap or foam solvent-safe roller cover; if needed, thin with TotalBoat Special Brushing Thinner 100 (brushing/rolling) or TotalBoat Spray Thinner 101 (spraying)
  • AVAILABLE IN FIVE BRIGHT, VIBRANT COLORS: Blue (Quart & Gallon), Black (Quart & Gallon), White (Quart & Gallon), Green (Gallon only), and Red (Gallon only); Coverage: 500 sq. ft. per gallon; after applying, theres no maximum dry time before launch

10. TotalBoat Spartan Antifouling Bottom Paint for Boats - Multi-Season Protection for Fiberglass, Wood

TotalBoat Spartan Antifouling Bottom Paint for Boats - Multi-Season Protection for Fiberglass, Wood
7.7

Totalboat

Check Price On Amazon
  • MARINE BOTTOM PAINT FOR MULTI-SEASON PROTECTION IN HIGH FOULING CONDITIONS: High copper content (38% cuprous oxide) for maximum antifouling protection against barnacles & slime for sailboats & power boats in fresh, salt and brackish waters
  • SMOOTH, ABRASION-RESISTANT FINISH FOR MAXIMUM PERFORMANCE: Offers maximum speed and fuel efficiency; can be burnished for a racing finish; advanced copolymer ablative formula offers continuous antifouling protection whether the boat is at anchor or underway
  • HAUL AND RELAUNCH WITHOUT REPAINTING: Hauled your boat for longer than 2 weeks? Simply scuff lightly to reactivate this paint's antifouling properties; ablative formula reduces paint buildup, which means no heavy sanding next time you apply bottom paint
  • EASY TO APPLY, DRIES FAST: Apply by brushing, rolling or spraying on fiberglass, wood, steel and previously painted surfaces in good conditions. THINNING: Brush/roller application - TotalBoat Special Brushing Thinner 100; Spray application - TotalBoat Spray Thinner 101
  • AVAILABLE IN BLACK, BLUE, GREEN & RED COLORS in Gallon size; Black and Blue are also available in Quarts; Coverage: 500 sq ft.per gallon; NOTE: This paint has no maximum dry time before launching your boat is required

Peter

Related Posts