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How to remove mold/mildew and restore boat seats

Updated: Mar 6

If you're dealing with mold or mildew on your vinyl boat seats, this guide is here to assist you in effectively removing it and restoring your seats to their original condition. With the following steps, you'll be able to eliminate the mold/mildew and bring back the fresh and clean appearance of your boat seats. This post is written by the boat detailing experts at Aqua Navis LLC.

For this task, we will require a few supplies: mold/mildew removal spray, microfiber towels, a detailing brush, vinyl protection spray, safety glasses, gloves, and a respirator.

This task will also require specific equipment, including a vacuum cleaner and a water hose. While not mandatory, a pressure washer with ratings of at least 1600 PSI and 1.3 GPM is recommended for optimal results. However, it is essential to adhere to proper techniques when operating a pressure washer to prevent any mishaps. It is crucial to maintain a minimum distance of 12 inches between the pressure washer and the vinyl boat seat to avoid any potential damage to the seat. Avoid using a 0-degree nozzle or a turbo nozzle as these can potentially cause unwanted damage.

Before starting the work, it is essential to equip yourself with the appropriate personal protective equipment (PPE) to safely remove mold and mildew from boat seats. It is important to note that a respirator will only be necessary in later steps that involve handling chemicals.

If you would like to purchase a kit recommended by the Boat Detailing Pros at Aqua Navis LLC click the link down below

Step 1: Debris Removal From Boat Seats

To ensure a thorough and meticulous cleaning of the boat seats, start by using a vacuum to remove any loose debris that may be present on or around the seats. For optimal results, it is recommended to detach the boat seats from their fixtures during this step.

Step 2: Spraying Down Boat Seats with Water

This step involves thoroughly spraying the boat seats with water, using either a water hose or a pressure washer. For the best results, it is recommended to remove the boat seats and spray all around them. If using a pressure washer, it is important to exercise caution and maintain a distance of at least 12 inches from the seats to prevent any damage.

Step 3: Applying Mold/Mildew Remover to Vinyl Boat Seat

Before starting this step, it is important to ensure your safety by putting on a respirator. Begin by spraying the mold/mildew removal chemical onto the boat seat. Use a detail brush to agitate the affected areas. Repeat this process on the entire boat seat, making sure to cover all areas. Rinse off the seat with water, making sure to thoroughly remove any residual chemical. If necessary, repeat the process until the desired results are achieved. It is crucial to avoid letting the chemical dry on the surface, as this could cause permanent damage to the boat seat. Once you are satisfied with the outcome, use a microfiber towel to dry the boat seat. It is essential for the seats to be completely dry before proceeding to the next step.

Step 4: Applying Vinyl Protection Spray to Boat Seats

Once the boat seats have completely dried, it is crucial to apply a vinyl protection spray to maintain their pristine condition and protect them from the harsh conditions they may encounter while out on the water. To begin, spray the protectant onto one section of the boat seat at a time. Then, using a microfiber towel, gently wipe in circular motions to ensure an even distribution of the protectant spray across the entire surface of the seat. Repeat this process until the entire boat seat is thoroughly covered with the protectant spray.

Step 5: Inspect your work

The final step is to carefully inspect the boat seats and ensure that it meets your satisfaction. If you find any areas that do not meet your expectations, repeat the necessary steps until you achieve the desired level of satisfaction. Once you have achieved the desired results, remove any personal protective equipment (PPE) and take a moment to appreciate the successful completion of your work.


If you carefully follow each step, the end result should closely resemble the image that has been provided. It is important to ensure accuracy in every step in order to achieve the desired result. For more useful tips on boat detailing, be sure to follow Aqua Navis LLC. If you are in Wisconsin and would like to use our boat detailing service

CLICK HERE to schedule with us today!

If you would like to purchase a kit recommended by the Boat Detailing Pros at Aqua Navis LLC click the link down below

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