How to Paint a Boat

A fresh coat of paint not only improves your boat’s appearance—it helps protect it from salt, UV damage, and wear. Whether you’re restoring a faded fibreglass hull or giving your aluminum canoe a new look, painting a boat is a project most owners can handle with the right prep and products.

What You’ll Need:

• Marine paint (topside or hull paint)
• Primer (if required)
• Marine cleaner or degreaser
• Sandpaper (80–220 grit)
• Painter’s tape and drop cloths
• Brushes, rollers, or spray gun
• Clean rags and tack cloth
• Safety gear (gloves, goggles, mask)

Step 1:

Choose the Right Paint

• Topside paint is used above the waterline—designed to withstand sun, spray, and impact.
• Hull/bottom paints (like antifouling coatings) protect below the waterline, especially in moored boats.
• Aluminum boats require a primer and paint system made specifically for bare metal.

Come in with your boat’s material (fibreglass, wood, aluminum) and where it’ll be used—we’ll help you choose.

Step 2:

Clean and Sand

Thoroughly clean the surface to remove dirt, algae, grease, or oxidation. Use a marine degreaser and rinse well. Then lightly sand the surface to remove old, flaky paint and create a surface the new paint can grip.

Wipe it clean with a rag dampened with acetone and then tack with a tack cloth.

Step 3:

Mask and Protect

Use automotive masking tape to protect hardware, trim, and edges. Lay down drop cloths to catch any drips or sanding dust.

If you’re only painting above the waterline, be sure to mask along that line carefully using a level or laser guide for accuracy and vinyl tape for a clean paint edge.

Step 4:

Prime (If Needed)

Apply a marine primer if:

• You’ve exposed bare fibreglass, wood, or aluminum
• You’re switching paint types (e.g., from oil-based to water-based)
• Your paint requires it for proper adhesion

Follow the manufacturer’s directions for application and drying times.

Step 5:

Apply the Paint

Using a low nap roller or brush, apply the paint in long, even strokes. For larger areas, a spray gun can save time—but a roller and brush work just as well for most small to mid-size boats.

Apply 2–3 thin coats, allowing each to dry as directed.

Pro Tip: Use a “roll and tip” technique—roll the paint on, then immediately follow with a brush to smooth out bubbles or roller texture.

Step 6:

Let It Cure

Let the final coat cure fully before launching or loading gear onto the boat. Some paints dry in a few hours; others take 24–72 hours. Follow the label for best results.

A Smooth Finish That Lasts

With a weekend of work and the right marine paint, your boat can look brand new and hold up better in the water. Proper surface prep and application are key to a finish that lasts through the season.

Ask Autohome About Marine Paint Systems

We carry high-performance marine coatings and primers for fibreglass, wood, and aluminum boats. Bring us your boat’s material and photos—we’ll help you match the right system for a smooth, durable result.