Storage Blog

Prepping Your Boat for Storage

September 10, 2025 in Storage Blog

A person washing a red boat with water and soap

Summer is coming to an end, and that means it’s time to prepare your boat for storage during the colder months. Properly preparing your boat for long-term storage is essential to keeping it in the best condition possible. Keeping your vehicle well-maintained and clean can help avoid any unexpected issues as you pull your boat out next spring. Follow these tips to keep your vehicle in good shape this winter:

1. Properly Clean Your Boat

Thoroughly cleaning the interior and exterior of your boat is important to prevent any wear and tear or mishaps during the winter. On the inside of the boat, you want to be sure to clean surfaces, including carpet, fiberglass, and cushions. Cleaning these interior materials can help prevent mildew or mold growth caused by humidity or moisture. Additionally, removing dirt and spills from the inside of your vehicle will prevent pest infestation and long-lasting stains.

As far as the exterior of the boat, it’s crucial to clean the engines, hull, and gel-coat surfaces, the hull bottom, and canvas. Properly cleaning the gel-coat surfaces keeps it shiny and avoids oxidation or paint chipping. The canvas on the exterior requires frequent cleaning to prevent dirt from being embedded into the material. 

The best way to clean the canvas is with warm water and soap, mixed with baking soda. Lastly, giving your boat a thorough wax job before storage prevents oxidation spots and makes spring cleanup far easier. It is important to note, however, that there are components of the engine with electrical wiring that can be damaged with certain cleaners.

2. Change the Oil

According to BoatUS, changing the oil and replacing the oil filter before storage prevents internal corrosion and extends the engine’s life. If you prefer to change the oil yourself instead of paying for a professional, there are a few tips to follow:

  • Keep boat in upright position to avoid oil spilling
  • Utilize a drain hose, spout, and pan to properly drain oil
  • Return engine to vertical position to insert new oil
  • Replace oil filter and add oil
  • Run the engine after changing oil
  • Don’t throw old motor oil in the garbage or down the drain

3. Fill up with Fuel

Filling up the fuel tank will prevent condensation from building up and causing dangerous corrosion. You may also want to change out the fuel filter while you are at it. When adding a fuel stabilizer, follow the ratio provided by the manufacturer. Most recommend 1oz per 2.5 gallons, but always verify on the label.

4. Disconnect the Battery

Leaving the battery connected in your boat for an extended period could cause it to die. Disconnect your battery before stowing away your boat for the winter and avoid returning to a dead battery. It is also recommended to start your boat a couple of times during the offseason to ensure it is in good condition.

5. Cover Your Boat

In addition to ensuring your boat is clean for the winter months, it is important to find a secure place to store it. Storing your boat in an indoor or outdoor storage unit is an ideal solution for keeping it in good condition. If you opt for outdoor storage, ensure you use a high-quality boat cover to protect your vessel from UV damage, dust, and moisture. 

Find Your Winter Boat Storage Unit Today

Keep your boat in its best possible condition and find a boat storage unit at Absolute Self Storage. When you need a secure, convenient place to store your boat for a few weeks or several months, look to facilities in the Absolute Storage network. Find a property near you to reserve your boat storage unit today!

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