Best Paint For Boats: Choosing The Right Coat

Painting a boat is an essential part of its maintenance, protecting it from UV rays, water damage, and marine life. The type of paint used depends on the boat's material and whether it will be used in saltwater or freshwater. Topside paints are used above the waterline to protect the boat from water, sunshine, and sand, whereas bottom paints are used below the waterline to prevent the buildup of microorganisms, weeds, and barnacles. The frequency of repainting also depends on the boat's usage and how long it stays in the water.

Topside boat paint

When selecting a topside paint, it is important to consider your skill level and the type of boat you have. Traditional oil-based alkyd paints are a good choice for amateur painters and for traditional planked wood boats, as they are more compatible with underlying surfaces and less expensive.

Some specific brands of topside boat paint include Rust-Oleum Marine Topside Paint, which provides long-lasting protection and a brilliant finish, and Blue Water Marine Topside Paints, which are known for their superior quality and value.

Bottom boat paint

There are two main types of bottom boat paint: hard and ablative. Hard bottom paints contain biocides on the surface of the coating, which are continuously released while the boat is in the water. However, hard bottom paints lose their effectiveness faster if the boat is left out of the water for an extended period. They are typically effective for a single season and require the removal of built-up layers before applying new paint. Examples of hard bottom paints include hard modified epoxy paints, Teflon bottom paints, and vinyl bottom paints. Hard bottom paints are suitable for boats that remain in the water for long periods without moving.

On the other hand, ablative bottom paints contain biocide throughout the coating layers, and they are often referred to as 'self-polishing' paints. These paints gradually release fresh biocide as the boat moves through the water or as water from tides and currents pass under the boat. Ablative paints can be effective for a single or multiple seasons, depending on the type. Some common types of ablative paints include copolymer and hybrid copolymer ablative antifoulings.

When choosing a bottom boat paint, it is important to consider the specific needs of your boat, such as the type of boat, how often it is used, and the environmental regulations in your area. Consulting with a marine services company or a boat dealer can help you select the most appropriate paint for your vessel.

Aluminium boat paint

Aluminium boats are a popular choice for fishing and recreational activities due to their durability, lightweight, and affordability. However, exposure to water, sun, and salt can cause the paint to fade, peel, and corrode over time.

When choosing paint for an aluminium boat, it is important to select one that is specifically designed for aluminium surfaces and provides a durable and long-lasting finish. It should also offer protection against harsh marine environments, including UV rays, saltwater, and corrosion.

TotalBoat Aluminium Boat Paint

TotalBoat Aluminium Boat Paint is a tough, corrosion-resistant marine paint that adheres directly to aluminium and galvanised metal without the need for etching or priming. It resists UV damage, chemicals, and abrasion, and it is easy to create a custom camouflage finish. However, it may not prevent barnacles or weeds from clinging to the boat bottom, and some users have reported that the paint is fragile and chips easily.

Interlux YBA063/QT Trilux 33 Antifouling Paint

This is a powerful antifouling paint that uses the latest Biolux technology to block slime. It is suitable for fiberglass, wood, steel, and primed aluminium. It is easy to apply and dries quickly, although it may require multiple coats for optimal results. Some users have reported issues with the paint peeling or flaking off, and it is not the most affordable option on the market.

TotalBoat Krypton Copper Free Antifouling Bottom Paint

TotalBoat Krypton is an effective antifouling bottom paint that provides superior protection against barnacles, weeds, algae, and slime in fresh, salt, and brackish water. Its copper-free formula won't cause galvanic corrosion on aluminium boats, outdrives, and trim tabs. It is easy to apply using a high-quality, natural bristle brush or a 3/16" nap or foam solvent-safe roller cover. However, the paint may require multiple coats for optimal results, and the price point may be higher than other bottom paints.

Rust-Oleum Marine Topside Enamel Paint

This is a reliable and durable paint ideal for use on fiberglass, wood, or metal surfaces above the waterline. Its oil-based formula is flexible and applies easily with excellent leveling, resulting in a smooth and even finish. However, multiple coats may be necessary for a smooth finish, and cleanup after use can be challenging. Additionally, the paint may not adhere well to heavily rusted surfaces.

Interlux/International Paint Trilux-33 Aerosol 16oz Black

This paint is specially formulated for aluminium outboards, outdrives, and aluminium hulls in underwater areas. The Biolux technology helps reduce slime and increases antifouling performance, and it is suitable for use in fresh, salt, and brackish water. However, the spray can clogs easily, making it challenging to apply in hard-to-reach areas. Additionally, the black colour may appear dull and dark grey.

Diamond Brite Paint (Budget Option)

Diamond Brite Paint is an enamel paint that uses an oil base to prevent peeling, cracking, and fading. It is versatile and can be used for interior and exterior applications. The application process is flexible, allowing for spraying, rolling, or brushing. There are 12 colours to choose from, and it is available in 1 quart, 1 gallon, or 5-gallon containers. However, it is not an anti-fouling paint and does not double as a primer.

Sea Hawk Paints Aluma Hawk Aluminium Boat Paint

Sea Hawk Paints Aluma Hawk is a paint that uses a resin that doubles as a primer, making it more durable. It is designed for use on raw aluminium surfaces and provides protection against corrosion. It dries rapidly and is easy to apply, and it is safe for use with fresh and saltwater. However, it does not have an anti-fouling feature.

Rust-Oleum Available 207005 Marine Topside Paint (Best Overall)

This paint is an affordable and durable option, although it should only be used above the waterline. It delivers a durable coating that can withstand extreme weather conditions and provides protection against UV rays. It has a glossy finish and a smooth appearance, and it is available in nine different colours.

TotalBoat Krypton Copper Free Antifouling – Marine Ablative Boat Bottom Paint (Best Overall)

TotalBoat Krypton Copper Free Antifouling is a heavy-duty paint that delivers vibrant, long-lasting colours. It contains anti-fouling ingredients that prevent algae and barnacle build-ups, and it is environmentally friendly as it does not use copper. It can be applied using a brush, roll, or spray, and there is no maximum dry time before launching. However, it should only be used below the waterline.

Fibreglass boat paint

Painting a fibreglass boat can be tricky due to the slippery surface, but it is possible to achieve a great paint job with the right equipment, good-quality paint, and the correct technique.

Types of Paint

The most commonly used paint types for fibreglass boats are single-part enamel, single-part polyurethane, and two-part polyurethane.

• Single-part enamel paints are the easiest for beginners to handle. They require minimal mixing, and the paint goes on easily. However, they are less durable and more susceptible to UV damage, and the gloss wears off quickly.
• Single-part polyurethane paints are popular for fibreglass boats as they apply smoothly, and can be applied with a roller, brush, or spray. Before application, follow the manufacturer's instructions on thinning the paint.
• Two-part polyurethane paints have double the amount of polyurethane, making them long-lasting and able to deliver a shinier gloss. They are intended for professional use, can be expensive, and require intensive preparation work. They are also powerful, so special protective gear is recommended when handling them.

Preparation

Before painting a fibreglass boat, it is important to remove or cover any parts of the boat that you do not want to paint. Repair any cosmetic damage, such as cracks, protruding nails, and broken parts, using a marine epoxy filler. Wash the boat with a gentle household detergent and a pressure washer, and remove any salty residue.

The gel coat should also be removed as paint will not adhere to it. Use a commercial solvent to clean it off, then sand the boat with medium-grit sandpaper to smoothen any dings and remove any remaining gel coat. After sanding, use a primer compatible with your chosen paint, or wipe down the boat's surface with Xylene, which acts as a cleaning and thinning agent.

Painting

Follow the manufacturer's instructions for mixing and applying the paint. Apply the first coat using a paint roller, then the second layer with a roller and a brush to reach hidden areas. Place the boat in a dry, well-protected area and ensure it is not exposed to extreme temperatures or humidity.

Post-painting

Allow the paint to dry for two to three days, or as per the manufacturer's instructions. Reinstall any hardware and apply a waxing product to protect the paint job and keep the boat looking good for years to come.

Wood boat paint

When it comes to painting a wooden boat, there are several types of paint and considerations to keep in mind. Firstly, it's crucial to understand that boat paint, often called marine paint, contains specific properties that protect a vessel's surface from elements in and out of the water. This protection is essential for the boat's overall structure and performance.

Now, let's delve into the types of paint suitable for wooden boats:

Topside Paint:

Topside paint is used above the waterline and includes the sides of the hull, deck, and interior. For wooden boats, topside paint typically consists of traditional oil-based finishes, as two-part paints tend to be less flexible. Here are some specific products you can consider:

• Marine Enamel: This type of paint adheres to various surfaces, including wood, steel, metal, fiberglass, and aluminum. It is available in different colours such as white, black, haze gray, and cruiser blue.
• TotalBoat Wet Edge Marine Topside Paint: Designed for boats, fiberglass, and wood, this paint offers a glossy finish and comes in a white colour.
• Rust-Oleum Marine Topside Enamel Paint: A gloss white paint that provides a durable finish and protects against UV rays and corrosion.

Bottom Paint:

Bottom paint, or antifouling paint, is designed to protect the underwater portion of your wooden boat from aquatic organisms, barnacles, weeds, and other elements that can cause damage. While bottom paint is crucial for all boats, the specific type of bottom paint you choose will depend on various factors, such as the boat's material, water type, and climate. Here are some options:

• TotalBoat Underdog Marine Antifouling Bottom Paint: Suitable for fiberglass, wood, and steel boats, this paint provides protection against fouling and is safe for the environment.
• Rust-Oleum Marine Flat Boat Bottom Antifouling Enamel Paint: A black-coloured paint that protects the underwater portion of your boat and helps prevent the growth of marine organisms.
• TotalBoat Krypton Copper-Free Antifouling Bottom Paint: This paint is ideal for fiberglass, wood, aluminum, and steel boats. It is copper-free, making it compliant with regulations in certain states, and provides effective protection against fouling.

Primers:

Using a primer before painting your wooden boat can improve paint adhesion and enhance the final finish. Here are some primer options:

• TotalBoat Marine Topside Boat Paint Primer: Specifically designed for fiberglass and wood, this primer ensures a strong bond between the paint and the surface.
• Rust-Oleum Marine Wood and Fiberglass Primer: This primer is suitable for preparing wooden and fiberglass surfaces for painting, enhancing the adhesion and durability of the topcoat.

Varnishes:

Varnishes provide a glossy or satin finish to wooden surfaces and can offer additional protection. Here are some options:

• TotalBoat Gleam Marine Spar Varnish: Available in gloss and satin finishes, this varnish is suitable for wood, boats, and outdoor furniture, providing a durable and attractive coating.
• TotalBoat Lust Marine Varnish: Offering high gloss and matte finishes, this varnish is ideal for wood, boats, and outdoor furniture, protecting the surface while enhancing its appearance.
• TotalBoat Halcyon Marine Varnish: A water-based polyurethane wood finish suitable for interior and exterior use, providing a clear satin finish.

Other Considerations:

When painting a wooden boat, there are a few additional considerations to keep in mind:

• Preparation: Properly preparing the surface is crucial for a successful paint job. Ensure the wood is clean, dry, and free of any grease or sanding debris. Sanding the surface can also improve paint adhesion.
• Compatibility: Always ensure that the paint and primer you choose are compatible with each other and suitable for the specific type of wood used in your boat.
• Environment: If environmental impact is a concern, opt for copper-free or eco-friendly paints that are less harmful to marine life.
• Climate and Water Type: Consider the climate and water type (saltwater or freshwater) your boat will be exposed to, as this will influence the type of paint and primer you choose.
• Maintenance: Regular maintenance and re-painting are essential to keep your wooden boat in optimal condition. Consult a marine services company for guidance on how often you should paint your boat based on your specific usage and storage conditions.

Frequently asked questions