10 Best Boat Bottom Paint of December 2025

• Superior single-season antifouling protection: Unique hybrid paint film contains concentrated biocide for maximum protection against persistent marine fouling below the waterline. Ideal for fiberglass and wooden boats in salt and fresh water
• Easy to apply by brush, roller, or spray: Apply 1-2 thin coats. No sanding needed between coats. For brushing, use a natural bristle brush. For rolling, use a 3/16” nap or foam solvent-safe roller cover. For spraying, use airless or conventional equipment. If needed, thin with water, up to 10% (12 ounces per gallon)
• No harsh odors. Easy cleanup: Water-based formula has low VOCs, which means no fumes and it’s ideal for marinas subject to environmental restrictions. When you’re done painting, simply use little soap and water to clean painting tools and equipment
• Compatible with most previously applied bottom paints: Apply over existing ablative or hard bottom paints. Burnish for increased speed and fuel efficiency
• Available in Gallon & Quart Sizes: Choose from four popular colors Black, Blue, Green, and Red. Coverage: 500 SQ. FT. per gallon

TotalBoat

• Inhibits corrosion on propellers, outdrives, shafts, struts, trim tabs, and other underwater metals.
• Contains approximately 1.5% zinc pyrithione to keep metals surfaces smooth in service.
• Fast-drying formula. At least 2 coats are recommended for excellent single-season protection.
• Adheres strongly to properly prepared metals including aluminum, brass, bronze, stainless steel, cast iron, and galvanized steel.
• Available in a 12 oz. aerosol spray. Color: Black. Finish: Flat. Coverage: 15 sq. ft.

TotalBoat

• Water-based ablative antifouling paint for Hypalon, PVC, and rubber inflatable boats
• Durable, flexible coating won't crack or flake off when boats are deflated and rolled up
• 25% Copper provides reliable protection against barnacles and growth in fresh and salt water
• Water-based formula means no solvents or fumes. Easy to clean with soap and water
• Color: Gray. Sold in Quart sizes. Coverage: One quart is enough for two coats on an 8-10 ft. inflatable boat

TotalBoat

• ECONOMICAL ANTIFOULING BOTTOM PAINT PROVIDES VERY GOOD SINGLE-SEASON PROTECTION below the waterline against hard and soft growth in low fouling conditions. Underdog is most effective on boats that are used frequently. Its durable finish withstands trailering and beaching better than traditional ablative bottom paints.
• ABLATIVE TECHNOLOGY CONTINUOUSLY RELEASES FRESH BIOCODE to combat marine fouling and reduce paint build-up to make painting easier the following season.
• USE ON PROPERLY PREPARED FIBERGLASS, WOOD, STEEL, IRON, AND PREVIOUSLY PAINTED SURFACES IN GOOD CONDITION.
• UNDERDOG IS EASY TO APPLY BY BRUSH, ROLLER, OR SPRAYING. Apply 1-2 thin coats. No sanding needed between coats. For brushing, use a natural bristle brush. For rolling, use a 3/16” nap or foam solvent-safe roller cover. For spraying, use airless or conventional equipment. Thinning should not be necessary, but if desired, thin with the appropriate solvent up to 10% (12 oz. per gallon). For brushing/rolling, use TotalBoat Special Brushing Thinner 100; for spraying, use xylene.
• AVAILABLE IN GALLONS, IN BLACK, BLUE, AND RED. COVERAGE: 500 SQ. FT. PER GALLON.

TotalBoat

• 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

Interlux

• COPPER-FREE, ECO-FRIENDLY, HIGH-PERFORMANCE MARINE ANTIFOULING BOAT BOTTOM PAINT provides superior single-season protection against barnacles, weeds, algae & slime.
• KRYPTON CAN BE APPLIED TO FIBERGLASS, WOOD, STEEL, IRON & ALUMINUM BOATS. Bottom paints are for use below the waterline only.
• BRIGHT COLORS ARE MORE VIBRANT THAN BOTTOM PAINTS CONTAINING COPPER BIOCIDE.
• EASY TO APPLY BY BRUSH, ROLLER, OR SPRAYING: For brushing, use a high-quality, natural bristle brush; for rolling, use a 3/16” nap or foam solvent-safe roller cover. Copolymer formula means that after application, there’s no maximum dry time to launch. So you can paint in the fall, store for the winter, and launch in the spring! You can also haul and relaunch without losing the effectiveness of the biocide.
• 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.

TotalBoat

• MULTI-SEASON PROTECTION IN THE WORST CONDITIONS: High copper content (40% Cuprous Oxide) bottom paint provides reliable, multi-season antifouling protection for boats in all waters, including warm saltwater, fresh water, and brackish waters
• SMOOTH, ABRASION-RESISTANT FINISH FOR MAXIMUM PERFORMANCE: Get maximum speed and fuel efficiency. Advanced copolymer ablative formula means it won't wear away too quickly. It can also be burnished for a racing finish
• HAUL AND RELAUNCH WITHOUT REPAINTING: Hauled your boat for longer than 2 weeks? Simply scuff lightly to reactivate this paint's antifouling properties. Formula minimizes paint build-up to eliminate heavy sanding
• FAST-DRYING & SUPERIOR COVERAGE: 500 sq.ft. per gallon coverage lets you finish painting your boat faster and launch sooner. Use on fiberglass, wood, steel and over previously painted surfaces. Spartan is compatible over nearly all bottom paints
• CHOOSE FROM FOUR POPULAR COLORS: Spartan is available in Black, Blue, Red & Green colors in Gallon sizes. Black and Blue also available in quarts

TotalBoat

• 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
• For use in mild to moderate fouling conditions
• Suitable for both fresh and saltwater
• Best for boats that are regularly hauled and cleaned
• Use on fiberglass boats and all non-aluminum trailer boats
• This item is not for sale in Catalina Island

Rust-Oleum

• INDUSTRIAL STRENGTH PAINT & VARNISH REMOVER. Strips multiple layers effectively with each application. Works on latex and oil-based paints, stains, varnish, lacquer, urethanes, and tough boat bottom paints that can be difficult to remove.
• EASY-TO-APPLY, FAST ACTING FORMULA WORKS IN JUST 15 MINUTES. Powerful finish remover can strip up to 10 layers of paint in 24 hours. Simple application by brush, roller, or putty knife. Safe for use on most surfaces, including wood, fiberglass, gelcoat, stone, and metal.
• CONTAINS NO METHYLENE CHLORIDE or NMP. Low odor, non-caustic, easy-on, easy-off formula cleans up with water — no acid wash neutralization is needed after application. No harsh fumes make TotalStrip great for indoor or shop use.
• GEL FORMULA CLINGS TO VERTICAL SURFACES. TotalStrip can be applied up to 1/2" thick, which is much thicker than other chemical paint strippers, and it won't drip — even on overhead and vertical surfaces.
• MADE IN THE USA. SIZE: 1 Gallon. For interior and exterior use.

TotalBoat