Boat bottom paint, also known as antifouling paint, is a specially designed product to provide superior protection to the under-water hull of your boat from invasive marine growth like barnacles, algae, and other microorganisms. This high-quality, marine grade paint creates a smooth finishing that reduces friction and improves the boat’s speed and efficiency on the water. Resistant to salt water, fresh water, and brackish water, boat bottom paint is a critical product for any boat owner, keeping the hull safe from potential corrosion or damage. The paint is formulated for easy application with a brush or roller, offering excellent consistency and fast-drying properties. Choose boat bottom paint for a clean, durable and long-lasting protective layer that also enhances your vessel’s performance. Available in multiple colors and finishes, you can find the perfect one to match the aesthetic of your boat. Save time, money, and maintain the integrity of your craft by using our top-tier boat bottom paint.
Top 10 Picks Best Boat Bottom Paint, Recommended By An Expert
1#. TotalBoat Spartan Antifouling Boat Bottom Paint – Multi-Season Protection for Fiberglass, Wood and Steel
Features
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
2#. Interlux YBB379/QT Fiberglass Bottomkote NT Antifouling Paint – Black, Quart
Features
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
3#. TotalBoat Underdog Marine Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats
Features
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
4#. TotalBoat Krypton Copper Free Antifouling Bottom Paint for Fiberglass, Wood, Aluminum and Steel Boats, Outdrives and Trim Tabs
Features
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, there’s no maximum dry time before launch
5#. TotalBoat JD Select Ablative Antifouling Bottom Paint for Fiberglass, Wood and Steel Boats (Blue, Gallon), 1 Gallon (Pack of 1)
Features
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#. Interlux YBB369/QT Fiberglass Bottomkote NT Antifouling Paint – Blue, Quart
Features
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: Blue
7#. Pettit Paint EZ-Poxy, Electric Blue Sapphire, Quart
Features
Electric Blue
8#. INTERLUX – Fiberglass Bottomkote NT, Paint For Fiberglass Boats, Antifouling Paint For Boats, Marine Paint For Fiberglass Boats, Antifouling Bottom Paint in Blue
Features
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: Blue
NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included.
COVERAGE: Plan starts on the date of purchase. Power surge is covered from day one. If portable, drops, spills and cracked screens due to normal use are covered from day one. Malfunctions covered after the manufacturer’s warranty.
EASY CLAIMS PROCESS: File a claim anytime online at www.Asurion.com/Amazon or by phone. Most claims approved within minutes. We will send you an Amazon e-gift card for the purchase price of your covered product. In some cases, we will replace or repair it.
TERMS & DETAILS: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
9#. Rust-Oleum Available 207012 Marine Flat Boat Bottom Antifouling Enamel Paint, 1-Quart, Black, (Pack of 1), 32 Fl Oz
Features
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
10#. Interlux YBB379/1 Fiberglass Bottomkote NT Antifouling Paint – Black, Gallon
Features
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
