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How to Apply Bottom Paint to an Inflatable Pontoon Boat is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to As an Amazon Associate this site earns from qualifying purchases.

Pontoon boat guide

For those that own an inflatable pontoon boat, the question often arises about suitable protection for the bottom of the boat. Just how much maintenance does an inflatable need, and should you be applying paint to the bottom for increased longevity?

The fact is, bottom or anti-fouling paint application is an important part of the annual maintenance routine. It helps prevent harmful bacteria and aquatic-bound organisms from eating away at the hull or impeding performance just by unwanted build-up.

Does the same apply to inflatable pontoons? The answer is maybe!

sea waves


The corrosive nature of saltwater means you have no choice but to maintain your pontoon with bottom paint.

freshwater lake


If you remove your inflatable pontoon after use (and are careful to hose it down before storage), protection bottom paint doesn’t need to be applied.

How to apply bottom paint to inflatable pontoons

Now we have determined whether you need to protect the bottom of your boat, we can go ahead and look at how it is applied.

There are two options for application:

  • spray paint
  • paint roller and brush

The benefits of spraying the paint on are that it is easier to create an even layer throughout the base of the boat.

Rollers and brush applications have a tendency to create an irregular thickness of application due to the amount of paint on the roller or brush.

However, before you even get to the application stage there is some important prep work to be done.

1. Sanding the vessel


The bottom of the boat has to be sanded down in order for you to paint it.

Sand until you reach the primer or surface of the inflatable material. Your job is to remove the factory paint job from the vessel.

2. Thoroughly clean the bottom

You do not want any access paint particles or sandpaper residue (or any other dirt) from being on the bottom before you paint

First wipe down the surface with a damp cloth, (a pressure washer will also do the trick if you have one).

Then apply a layer of dewaxing solvent over the base of the bottom. This will help ensure that the surface of the boat is now free of dirt, grease, paint, and grit.

3. Apply 5 layers of Primer

Using a roller apply five coats. Make sure you pay close attention to the application instructions for the specific product you are using. Consistency has to be correct, and you also need to wait the specified time between layers.

4. Applying the Bottom Paint

Finally, we are ready to apply the protective bottom paint. This should be done while the primer is still slightly sticky to touch, (although the product instructions will inform you of how long you need to wait before applying the paint).

Using your roller or sprayer, apply the paint as consistently as you can. The video below will help demonstrate the best method of applying the paint by hand.

And if in doubt, you could always ask at the local boatyard and see if a professional can do it for you instead. However, we have confidence that after this short guide you will have everything you need to complete the job yourself.

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