Yes, you can pressure wash a boat. Pressure washing is a common method used to clean boats and remove dirt, grime, algae, and other contaminants from the exterior surfaces. It can be an effective way to maintain the cleanliness and appearance of your boat.

Things to know when pressure washing a boat

Use an appropriate pressure washer

Choose a pressure washer with a medium to high-pressure setting, typically between 1,500 and 2,500 pounds per square inch (psi). Higher pressure can help remove stubborn stains, but be cautious not to use excessive pressure, as it can damage the boat’s surface.

Select the right nozzle

Opt for a wide-angle or fan spray nozzle instead of a pinpoint nozzle to distribute the water over a larger area, reducing the chances of causing damage. A 25- to 40-degree nozzle is usually suitable for boat cleaning.

Use proper technique

Hold the pressure washer lance at a consistent distance from the boat’s surface, typically around 2 to 3 feet. Start spraying from the top and work your way down, maintaining a steady sweeping motion to avoid concentrated pressure in one area. Pay extra attention to areas with more dirt or stains.

Avoid sensitive areas

Be cautious around delicate components such as decals, portholes, and any loose fittings. High-pressure water can damage or dislodge these items. Also, avoid spraying directly into electrical connections, vents, or other sensitive areas.

Use mild detergents if needed

In some cases, you may want to use a mild detergent or boat cleaner in conjunction with the pressure washer. Follow the manufacturer’s instructions for the specific product and make sure it is suitable for use on boats. Apply the detergent using a low-pressure setting and then rinse it off with the pressure washer.

Rinse thoroughly

After pressure washing, thoroughly rinse the entire boat to remove any remaining detergent or debris. Pay attention to areas that are difficult to reach, such as the underside and crevices.

Remember, it’s essential to follow safety guidelines and any specific instructions provided by the boat manufacturer or pressure washer manufacturer when pressure washing your boat. Regular cleaning and maintenance can help preserve the appearance and longevity of your boat.