Definitive Guide: How to Waterproof a Boat Cover [6 Tips Included]

You know the importance of a good, dependable boat cover if you’re a boat owner. A boat cover helps to shield your boat from elements such as water, dust, and sun.

But what happens when the waterproof quality of your boat cover starts to diminish?

How to Waterproof a Boat Cover

This guide offers easy instructions on how to waterproof a boat cover, ensuring it stays in great condition.

Read this article to learn how to maintain your boat cover for long-lasting use, saving you time and money.

So, whether you’re an experienced sailor or a novice boat owner, this guide is for you. Dive in and keep your boat cover as good as new.

Step-by-Step Guide: How to Waterproof a Boat Cover

Step 1: Clean Your Boat Cover.

Before you commence waterproofing your boat cover, it is essential that you first give it a thorough clean. This step can be done with warm soapy water and a soft brush or cloth.

Once the covered area has been washed and wiped down, allow time to dry completely before moving on to the next step.

Step 2: Prepare Your Boat Cover With an Adhesive.

After you have cleaned the boat cover, you must put an adhesive on it. The adhesive helps keep waterproofing substances on the cover and stops water from getting into the seams of the fabric.

Step 3: Apply Waterproofing Solution.

To protect your boat cover, you should use a waterproofing solution. These solutions come in sprays or liquids.

Apply Waterproofing Solution

They will stop water from getting through and reduce damage from the sun. When applying the solution, it is important to ensure it is evenly spread out over the entire cover.

Step 4: Allow the Boat Cover to Dry Completely.

Once you put the waterproofing solution on your boat cover, you must wait for it to dry. This can take several hours depending on how much solution you use and the weather.

Only use your boat cover after it is completely dry in water or heavy rain.

Step 5: Reapply Waterproofing Solution as Needed.

It is important to take care of your boat cover so it can keep water out. To do this, you must occasionally put the waterproofing solution on the cover.

This will ensure the fabric and any gaps between materials stay dry and won’t let water in.

Following these steps, you can ensure that your boat cover remains waterproof and protected against wear and tear.

Additional Tips for Waterproofing Boat Cover

Tips for Waterproofing Boat Cover
  • Store the boat cover out of direct sunlight, which can cause it to fade or weaken over time.
  • Ensure your boat cover is completely dry before folding and storing away to prevent mold growth.
  • Try using covers specifically designed to be waterproofed, as these have a more robust construction and will provide better protection against water penetration.
  • Check the seams of your boat cover regularly to ensure they are sealed properly and no water enters through any gaps.
  • Regularly inspect your boat cover for any signs of wear and tear. If you find any, you can repair it with a waterproof product.
  • Don’t use tough cleaning products or soaps to clean your boat cover. They can damage the fabric and make it less waterproof.

These tips can ensure that your boat cover is well taken care of and maintains its water resistance for years to come.

Check Out Also: How to Waterproof Plywood for Boat

Few Things to Consider When Waterproofing Your Boat Cover:

Don’t Use Poor Quality Sealant:

When waterproofing your boat cover, use a quality sealant to provide better protection against water penetration and help keep the fabric strong and durable.

Avoid using cheap or low-quality sealants, as these may not provide adequate protection against water.

Check for Leaks Regularly:

It is important to regularly check your boat cover for any signs of leaks and repair any issues as soon as possible.

Remember to use the right sealant for the job, as some fabrics are more susceptible to water damage than others.

Test the Sealant on a Small Area First:

Before applying the sealant on a large area of your boat cover, testing it on a smaller area first is advisable. This will allow you to check if the sealant is effective and provides good protection against water.

Test the Sealant on a Small Area First

Don’t Use Sealant in Direct Sunlight:

When waterproofing your boat cover, it’s important to remember not to do so in direct sunlight.

Sealants can dry too quickly in the light, creating a less effective seal than intended. Waterproof your boat in cool shade or evening light to ensure you get the best results.

When Should You Waterproof A Boat Cover?

Waterproofing a boat cover is one of the most important steps in caring for your vessel. It helps to ensure that it will remain protected from the elements and in good condition for many years.

Waterproofing your boat cover at least once every couple of years is advisable. This will help extend the lifespan and keep it looking good for longer, as well as prevent any water damage or discoloration.

You should also look into waterproofing your boat if you plan on using it out in inclement weather or storing it outside for an extended period. This will help to shield your vessel from the elements, so you can rest assured that it won’t be affected by rain or snow.

How Long Does the Waterproofing Effect Last on Boat Cover?

The waterproofing effect of your boat cover can last for years, depending on the quality of the product and how often you use it.

How Long Does the Waterproofing Effect Last on Boat Cover

Applying a special solution every two or three months is a good idea. This helps protect the cover from water damage. You can do this more often if you need to.

To extend the life of your boat cover, clean it regularly with mild soap and warm water. Make sure to rinse off any soap residue and dry completely before storing. Also, look for any signs of damage, like tears, snags or fading, before they worsen.

Frequently Asked Questions:

How often should you waterproof a boat cover?

Waterproofing your boat cover should occur at least once a year. This will help to protect the material and ensure that it is not experiencing any wear and tear. If it rains a lot or your boat is in salt water, you should waterproof it more often. This will help keep the fabric of your boat from getting damaged faster. Additionally, you should inspect the cover regularly for any signs of wear and tear.

What type of spray to use for waterproofing boat cover?

When waterproofing your boat cover, make sure to use a spray that is made for boats. Please don’t use a generic one because they are not made to handle the intense exposure that boat covers endure. Before using any waterproof spray you should always test the product in a small area first. This will help you to make sure you are happy with the results.

How long does it take for a waterproofing product to dry?

The drying time for a waterproofing product will depend on the type of spray used. Generally, most sprays should be dry within an hour, but it is best to check the manufacturer’s instructions for specifics. Additionally, add a coat of spray for extra protection. This will help to ensure a longer-lasting waterproofing solution for your boat cover.


Waterproofing a boat cover is all about taking a systematic approach.

Start by cleaning it to remove any dirt or grime. Prep it with adhesive for a solid bond.

Apply a waterproofing solution to keep water out. Let it dry before you’re good to go.

Don’t forget you’ll need to reapply the waterproofing solution regularly to keep it working effectively.

By following these steps on how to waterproof a boat cover, you can ensure that your cover remains resilient against water and wear.

Remember, a little effort now can save you a lot of trouble and money in the future.

Happy sailing!

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