Is Acrylic Paint Waterproof

Is Acrylic Paint Waterproof – Will Rain Wash Away Acrylic Paint?

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Acrylic is a water-based paint. This means that it is quick-drying, inexpensive, and quite easy to work with. Many artists and crafters are attracted to acrylic paint for these reasons. Although it is a convenient option, acrylic paint does have its downsides in terms of durability and water resistance. Let us explore exactly what acrylic paint is made up of, and just how waterproof it is.



Is Acrylic Paint Waterproof When Dry?

A frequently asked question would be: “Is acrylic paint waterproof?” The short answer is no. However, there is a minimal level of water-resistance when acrylic paint is dry. In order to make the paint more resistant to water, you will need to seal it. The surface you are painting on will determine as to how you will achieve this. In some cases, the surface may need to be prepared before painting.

However, even when sealed, this paint is still not completely waterproof. When wet, acrylic paint can absorb any water around it. When dry, it is only slightly water-resistant and will still chip or peel when wet. Taking extra precautionary steps through sealing the paint will help to enhance its lifespan.

Is Acrylic Paint Waterproof When Dry



Understanding Acrylic Paint

Acrylic paint is incredibly fast-drying. This is due to it being a water-based paint, where the water evaporates quickly. The paint is made up of a pigment (the color) which is mixed into an acrylic polymer emulsion. It is this emulsion that also makes the paint so quick-drying.

Below are the main features that make up acrylic paint:

  • Acrylic resin – This is the binder, or the thing that holds the paint onto the surface. The acrylic resin separates the pigment and keep things together when the paint dries.
  • Pigment – The pigment is what gives the paint its color. Pigments occur in a powder form, and so they need to be mixed with something to turn them into paint.
  • Water – Water is thought of as the “vehicle” in acrylic paint. This is what turns the pigment and resin into a fluid paint form.



Why Do You Need to Waterproof Acrylic Paint?

Is acrylic paint waterproof when dry? Will rain wash away acrylic paint? These are common questions. As mentioned above, water is what keeps the paint in its fluid form. If the paint takes on more water from a spill or rain, the paint can become thinned out. The paint will absorb the water when exposed to it because it consists of many tiny pores.

Any acrylic painted surfaces for the outdoors will need to be properly waterproofed in order to protect them from rain or dew.


Tools Needed For Applying Varnish to Acrylic Paint

Specialized tools aren’t required, but using the right kind of brush can make a major difference. The best option here would be a foam poly brush. These help with soaking up the varnish and creating an even coat when applied.

It is essential to work carefully when applying varnish to acrylic paint. You don’t want any marks to soak through to the paint, or any fingerprints to smudge the work. Steady, even brushstrokes are important. Make sure not to rest the brush on one area for too long, and avoid touching the painting.

Is Acrylic Paint Waterproof Supplies


How to Waterproof Acrylic Paint

Even though acrylics are a more durable form of paint that can be applied to just about anything, they still need to be waterproofed in order to prevent water damage. This should be done while the paint is still wet.

To waterproof acrylic paints, they will need to be painted over with a special kind of varnish. This varnish is a unique form of acrylic gloss that adds a protective coating over the paint – protecting the pores against absorbing more water.


Waterproofing Acrylic Canvas Paintings

If you plan to paint acrylic on canvas, it is important to make sure that it is properly waterproofed. This will help to preserve your painting against any potential water damage.

Firstly, prime the canvas with a good primer. Once the canvas is primed, it can be painmted over as you usually would. Once dry, spray the painting with a UV-protective spray. This adds a layer of protection against harmful rays of sunlight.

The next step is to add a final layer of waterproofing. This can be done by applying a few coats of outdoor polyurethane on both sides of the canvas (including the frame). Make sure that the polyurethane is completely dry between each coat.

Once dry, the canvas will be fully protected against the elements. A canvas like this is waterproof, UV-protected and can be hung in outdoor spaces.


Waterproofing Acrylic Paint on Metal

Acrylic paints are generally considered the best choice for painting on metal, as they stick really well and are non-reactive. Everyday metal objects at home can easily be painted with acrylics.

Waterproofing metal surfaces is relatively easy. It just takes a single coat of specialized metal varnish, which is unlike other surfaces that require multiple coats.

Is Acrylic Paint Waterproof When Wet


Waterproofing Acrylic Paint on Glass

Acrylic paint is appealing because it can be used on a wide range of surfaces. This paint comes out really well on glass and can be waterproofed for complete protection. First paint over the glass, and then let it dry completely for 24 hours so that it can set properly.

Setting the paint can be done in a few ways. You can place the painted glass in an oven set to 350 degrees Fahrenheit. It is important to put the glass into a cold oven, and then let it slowly heat up. The basic rule is to leave acrylic glass or acrylic enamel paint in the oven for half an hour.

If the paint has been combined with a glass and tile medium, it should be left for an extra 45 minutes. Then, leave the glass and oven to fully cool down before removing your glass piece. After 72 hours, gently handwash the glass and it should be ready.

Other options to set acrylic paint on glass include using a hairdryer at low heat, air drying the glass for 21 days, or properly drying out the painted glass in the sun.




Acrylic paint is a convenient, fast-drying option. This paint is affordable, user-friendly, and can be used on a wide range of different surfaces. However, there is always the risk of water damage if the paint is not properly waterproofed. Will rain wash away acrylic paint outdoors? If not waterproofed, yes.


Always take the right steps to waterproof acrylic paint, because you don’t want your hard work ruined by a few drops of water. When properly waterproofed, this paint can be durable and long-lasting.


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