Is Spray Paint Waterproof? – Find Out Here

Randy Charles
Professional Painter

Randy Charles is the owner of, a website dedicated to providing information, tips, tricks, and news about all things paint. With over 10 years...Read more

Edward Seymour invented spray paint in 1949. It’s a fast and cheap way to add color and pattern to furniture, walls, and other surfaces. It depends on the type. This guide is here to help you understand the different types of spray paint and how to make them more waterproof.

With this info, you can choose the right product for your project and know your designs will stay water-free.

What is Spray Paint?

Spray paint is great for crafting and artwork. It’s an aerosol paint made of pigment in a solvent and propellant. It’s sprayed from a can directly onto items.

Spray Paint
Spray paint

Most spray paints dry quickly, which is great for large or small surfaces and detailed work. You can choose glossy, metallic, fluorescent or dull finishes. Some brands offer rust-resistant or waterproof features.

When using spray paint, pick the right one for your task. Think about drying time, coverage area, finish type and waterproofing. Follow safety guidelines too.

Types of Spray Paint

When it comes to spray paint, many types vary in surface, finish, and external exposure durability. Choosing the right one is key for waterproofing in wet or humid climates.

Three main types are enamel, epoxy, and urethane. Enamel is best for indoor use; it takes longer to dry and provides a great finish. Epoxy is often used for automotive needs since it can withstand weather conditions like moisture and heat. Urethane is for outdoor use, as it has UV protection. It should only be applied in temperature-controlled and well-ventilated places.

  • Enamels come in gloss or semi-gloss and offer great coverage without running or fading easily in rain or snow. They produce a smooth finish with a high sheen.
  • Epoxy paint is water-resistant and has excellent adhesion, making it great for outdoor use.
  • Urethane paint is perfect for exterior surfaces, providing an even finish against the elements. It also protects against corrosion and UV rays. It should only be applied in temperature-controlled environments with good ventilation.

Urethane is economical and industrial-grade. It provides excellent durability and shields against UV rays and atmospheric pollutants. It is handled under extreme conditions and must be taken into consideration. It is used in devices and activities related to painting processes. It is also used in industries and is available in specified units. It is developed further expansively and is taken out upon intervals. It is trusted and understood, outputting values across multiple industry field players. It is also heard, talked about and enjoyed, logically elaborated and restlessly pursued, combined correctly and dealt with professionally. It is traditionally delivered, majorly ensured, idealistically organized, optimally applied, harmoniously mentioned, and enables long-term evolution. It is accurately embraced, shared timely, annually monitored, and ultimately concluded. It is newly introduced, periodically fulfilled, advanced, notoriously detected, and forthrightly administered.

Does Spray Paint Work on Different Surfaces?

When deciding if spray paint is waterproof, know the characteristics of your project surface. Different surfaces need different types of treatment for the best results. Not all paint works for every surface.

  • Paints with solvents can make a waterproof barrier on porous or non-porous surfaces such as metal and glass.
  • Specialized paints work best on porous surfaces like wood and concrete. They go in crevices to give extra protection against water damage.
  • Some paints have fabrics that act as a layer of protection to prevent water absorption.
  • Use latex-based paints with low VOC levels for walls and vertical surfaces inside. This paint reacts better to temperature changes inside homes and protects against moisture.

Be aware of risks with any paint. Improper use or application can cause short or long-term damage and health risks if safety protocols, like wearing a mask, are not followed. Understand all safety protocols before doing a spray paint project!

Spray Paints
Spray paints

Is Spray Paint Waterproof?

You need to ensure the paint is waterproof when it comes to spray paint. Many types of spray paint are designed for outdoor use and must withstand rain, sprinklers, and pool splashes. Depending on the paint you choose, you will get varying water-resistant results.

Standard aerosol cans are unsuitable for outdoor use unless the label says it has a water-resistant formula. This paint will flake or peel after coming into contact with moisture. Enamel-based paints should be used for surfaces exposed to rain as they have more resilience against liquid.

For rainy climates or items that are always exposed to liquid, Latex paint should be used. This paint is designed for wet weather conditions. Some aerosol cans include specialized formulas for waterproofing leather or patio furniture.

These formulas contain ingredients like silicone. When applied correctly, they seal surfaces and protect them from rain and other moisture exposure. They make great choices for marine-grade wooden boat parts, outdoor furniture pieces, and other objects that need long-lasting wet-weather resilience.

How to Make Spray Paint Waterproof

To make spray paint waterproof, you need a sealant. Different types of sealants have different methods of application and effectiveness. Pick the right sealant, and apply it correctly. Coat freshly painted surfaces with an even layer when the paint is dry. Follow the manufacturer’s instructions.

Common waterproofing products for spray-painted surfaces include:

  • Polyurethane (PU) Spray Paint Sealant – Durable and protects against water and other elements. Best used on wood or metal surfaces. It can be used on masonry or concrete without moisture absorption.
  • Acrylic-Based Spray Paint Sealant – Adhesive-type sealant, popular in marine applications. Easier to apply than Polyurethane but not as durable over time.
  • Silicone-Based Spray Paint Sealer – Sold at home improvement stores as an all-purpose protective coating. It should not be used on fabrics, as it can repel water instead of repelling spills.

Choose the right sealer for the surface to ensure your finished project is strong. Pay attention to the supplies you use with your spray paint. This will increase the longevity and look of your project!

Tips for Using Spray Paint

Different Spray Paints
Different spray paints

For indoor projects, use low-odor, fast-drying, and non-flammable spray paint. For outdoor objects, like fencing, decks, or patio furniture, use oil-based spray paint specifically designed for exterior use. There are also paints with UV protection to prevent fading and mildew resistance.

Before painting, prepare the surface. Sand it lightly with medium-grit sandpaper and wipe away dust and dirt. Read the instructions from the spray paint manufacturer.

When ready, spray the object from 12 inches away. Apply multiple thin layers, allowing each layer to dry before applying another. Depending on the conditions, this could take 10 minutes up to an hour. Check the instructions for special primers or preparation for metal surfaces.

Finally, stay safe! Wear waterproof respirators, vinyl gloves, and eyewear/goggles to protect against toxic chemicals in the paint. Make sure there is proper ventilation during and after the application.


Analyzing the factors that make spray paint waterproof, it’s clear that nothing beats acrylic enamel. Prepare and apply properly for a lasting, waterproof finish!

There are marine epoxy or polyurethane paints if you need quick, easy paint outdoors. These are more expensive and require complicated applications.

Follow all instructions on the can, no matter what spray paint you use. With enough preparation, practice, and hard work, you will create a waterproof masterpiece in any weather.

Frequently Asked Questions

Is Spray Paint Waterproof?

It depends on the type of spray paint you are using. Most spray paints are designed to be water-resistant but not waterproof. Some specialty spray paints may be waterproof when they have dried.

How Long Does Spray Paint Take to Dry?

Generally, most spray paints take about 15-30 minutes to dry. However, the paint can cure for up to 24 hours and is fully waterproof.

Is it safe to use spray paint indoors?

Generally, it is not recommended to use spray paint indoors due to the potential risks from the fumes. If you must use spray paint indoors, using it in a well-ventilated area and using a respirator or mask is important.

Randy CharlesProfessional Painter

Randy Charles is the owner of, a website dedicated to providing information, tips, tricks, and news about all things paint. With over 10 years of experience in the painting industry, Randy has become an expert in the field and is passionate about helping others learn more about painting. He has written numerous articles on the subject and is committed to providing accurate and up-to-date information to his readers.

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