Waterproof Craft Paint: Make Acrylic Paint Outdoor Water Resist

Acrylic paint is naturally water resistant when it is properly cured. But prolonged exposure to water such as heavy rain or moisture, the paint can be damaged. Learn more step by step…

However, there have good options to make waterproof craft acrylic paint. Such as:

  1. Use proper water resistant acrylic paint (specially design for outdoor use)
  2. Mixing paint with medium such as polymer
  3. Applying sealer on craft paint

How to Make Craft Paint Waterproof: 3 Ways (Step by Step)

Use Proper Water Resistant Acrylic Paint

Waterproof craft paint is made of acrylic resin, pigment, and water – it’s tough, quick-drying, and applying multiple layers makes painting waterproof, fade-resistant, crack-resistant, and peel-resistant. For outdoor use, check out the following acrylic paints as the ultimate waterproof craft paint solution.

You can check details about acrylic paint on Wikipedia.

Best Waterproof Acrylic Paint for Outdoor Crafts

PaintFeaturesWater Resistance
Liquitex Professional Heavy Body Acrylic PaintPremium, High paint pigmentGreat
Golden Heavy Body Acrylic PaintPremium, High paint pigmentGreat
Winsor & Newton Professional AcrylicsCheap, Lot of color availableMedium

Best Waterproof Acrylic Paint for Outdoor Crafts: 10 Second Summary

Best Overall: Liquitex Professional Heavy Body Acrylic Paint and Golden Heavy Body Acrylic Paint parfect choose for go. Heavy pigment load and creamy consistency, make them highest water resistant, premium. Also superior lightfastness, layering, glazing, impasto, long-lasting durability the paints are always first choice. 

Best Alternative: Winsor & Newton Professional Acrylic Paint also good artistic grade paint. Have a lot of color options at an affordable price. But not as great outdoors as Golden and Liquitex heavy body. However apply sealer or mixing with medium strong waterproofing possible. 

Pro tip: If you need completely waterproof craft acrylic paint, there have more options available. Choose highest grade labeled as “exterior” or “weather-resistant” paint. If you need more strength, choose marine-grade acrylic paint. Also apply proper sealer coat on paint, it can be made completely waterproof. However, you are not happy yet, then there is not any water resistant acrylic paint available. Go for oil or other paint. 

Mixing Paint with Polymer Medium: Step by Step

Acrylic paint durability and water resistance can be increased with polymer mediums which main ingredient is acrylic resins. It improves adhesion and flexibility too – ideal for outdoor painting or weather-exposed murals. Certain polymer mediums even contain UV stabilizers and other additives for extra protection.

How to Mix Polymer with Acrylic Paint?

Step 1: Gather Materials

Need the following materials:

  • Acrylic Paints
  • Polymer Medium
  • Mixing Palette or Plate
  • Palette Knife or Brush

Step 2: Mixing Paint and Polymer Medium

Put desire amount of acrylic paint on paint palette. Then apply slowly and a small amount to the medium each time. You can mix 1:2 medium and paint ratio. But the ratio depends on your preference. Take a palette knife and mix the paint. 

Here are some best polymer mediums

Polymer mediumGradeNote
Liquitex Professional Gloss Heavy Gel MediumArtistExcellent for creating glossy, waterproof surface
Golden Polymer MediumArtistMake paint glossy, waterproof
Winsor & Newton Galeria Acrylic Gloss MediumArtistAlso make glossy, waterproof 

Step 3: Test the Mixture

It is important to test the mixture’s water-resistance and durability before applying it to artwork. Apply a thin layer on paper or cardboard and let it dry to ensure desired results.

Step 4: Apply the Mixture

If you happily with paint mixture, you can apply the paint to your artwork with paint brush or palette knife. Apply the paint evenly and let it dry completely for apply additional layers. 

Pros of Applying Polymer

  • Make strong water-resistant
  • Improved durability
  • Very easy to apply

Cons of Applying Polymer

  • Can changes the appearance

Pro tips: Mixing polymer medium make strong water resistance again heavy rain. Applying sealer on top coat of painting will make it ultimately waterproof. 

Apply Sealer: Step by Step

Applying a sealant on top of acrylic paint is very important for outdoor use. It creates a protective barrier that keeps water from penetrating the paint layer, resulting in long-lasting and vibrant colors.

There have 2 types of popular sealer

  1. Spary sealer
  2. Brush-on sealer

How to Apply Spray Sealer?

Step 1: Prepare the surface

Ensure acrylic paint top layer clean, dry, and free from any debris or dust.

Step 2: Shake the spray sealant can

Shake the spray sealant properly before apply. It will ensure the product is thoroughly mixed.

Step 3: Apply the spray sealant

Hold the can about 8-10 inches away from the surface and spray the sealant in a sweeping motion, ensuring even coverage. Apply the sealant in thin layers and let it dry completely between each coat.

Here are some popular spray sealer 

Spary SealerGradeNote
Mod Podge Clear Acrylic SealerArtisticPouler for craft sealing. Non-yellowing, sealing and protecting acrylic paint
Rust-Oleum 302151 Universal All Surface Spray PaintArtisticDurable, long-lasting
Krylon K01305 Gallery Series Artist and Clear Coatings AerosolArtisticSpecialized protecting against moisture, UV rays, and fading

Step 4: Allow the sealant to dry

Allow the sealant to dry for at least 4-24 hours before exposing the surface to water or moisture.


  • Great for large surface
  • Easy to apply
  • Most of spray sealer UV protection


  •  Some spray sealants contain harmful chemicals

How to Apply Brush-on Sealing?

Step 1: Select the ideal brush-on sealer. 

such as outdoor-specific varnish or resin, that can effectively adhere to acrylic paint.

Here are some popular varnish

Sealer VarnishGredeNote
Liquitex Professional Gloss VarnishArtistSpecifically designed for acrylic paint and provides a high-gloss finish. Make paint waterproof.
Mod Podge Waterbase SealerMediumBest sealing sealer, good choice for sealing acrylic paint

Step 2: Prepare the surface. 

Prepare the surface properly. it must be clean, dry, and entirely free of debris, dust, or loose particles to ensure a strong bond between the sealant and the paint.

Step 3: Apply the Varnish

Apply the brush-on sealant in a thin and even layer using a clean and dry brush. Do not apply excess sealant as this can result in a streaky or uneven finish.

Step 4: Allow the sealant to dry

Let the sealant dry completely, adhering strictly to the manufacturer’s instructions, and keep in mind that humidity and temperature can cause variations in drying time.

Step 5: Apply a second coat

If necessary, apply a second coat for maximum protection and increased water resistance of the acrylic paint.


  • Best of small craft surface
  • UV-resistant
  • Durable


  • Need some experience to apply

Bottom line, That’s it πŸ™‚

About the Author

Shojib Hoq

My name is Shojib, and painting has been my passion since childhood, and it still holds a special place in my heart. I absolutely adore the process of painting, pouring, and creating crafts.