Choose a wax-based or polycrylic sealant. Wax-based sealants give wooden surfaces more of a flat finish, while polycrylic ones provide a glossier one. Water-based polycrylic sealants are the most versatile.
Acrylic paint can be sealed on outdoor surfaces with polycrylic or water-based polyurethane. To avoid damaging your paint, make sure you choose a water-based (not solvent-based) polyurethane.
Polyurethane forms a protective barrier that seals the painted surface and prevents water, moisture, UV light and other environmental factors from degrading the acrylic paint over time. This makes it ideal for outdoor or high-traffic painted wood projects.
Polymers cannot be dissolved in natural substances; so acrylic paint when dry will be weatherproof. If the material you painted on is not waterproof, then coat the entire surface in acrylic.
Start by sanding the wood and then putting two layers of shellac on the piece to be safe. You can buy prepared shellac from the hardware store or prepare it yourself. You can also use acrylic gesso. And once the acrylic paint is dry, you should finish with varnish.
If you're happy with the results, you could be done. However, to add extra protection against the sun's rays, you can use a spray varnish. I use Winsor & Newton Artists' Gloss Picture Varnish. To do this, go outside and use the spray varnish to apply a nice even coat, holding it back about 5-7 inches.
If you choose a brush-on sealer, the application is really simple. Just squirt it directly onto your painting in sections and brush it on. I use a large, 2” flat brush and it works great. I am able to quickly cover the entire canvas with a nice, even coat of sealer.
Jay Sanders of Castle Dream Construction says polyurethane can be applied over paint. So, if you're looking into polyurethane as an option to protect your painted surfaces, you're good to go.
Which clear coat is best for acrylic painting projects? The great thing about acrylic-based paint is that you can cover it with anything. You don't need to worry if your sealer is acrylic, water, or oil-based. Anything goes, but they will all give you a different look and have different methods of application.
Seal your acrylic paint projects, your home decor pieces, and your decoupage paper creations with this versatile sealant. Add Mod Podge Acrylic Sealers to your art supplies for durable protection and shine to all your DIY projects.
Acrylic paint is water-resistant but not completely waterproof. This means that while it can withstand some exposure to water, it is not impervious to it. To make acrylic paint more water-resistant, artists often use primers, sealants, or varnishes.
Acrylic caulk works well for painting applications as it fills in any gaps between walls, ceilings, and woodwork trim. It cleans up well and provides a clean, neat seal. Silicone caulk, is often referred to as rubberized silicone caulk, remains flexible for most of its lifetime without peeling, cracking, or distorting.
The Best Outdoor Finishes to Protect Wood
After you're done painting, your project is going to need an outdoor finish. While tung oil can be an excellent waterproof wood sealer, the best form of protective wood finish you can use is our new Outdoor Defense Oil.
Acrylic paint creates a durable, hard finish that's easier to work with, dries faster and produces lower VOCs than oil-based paint. Plus, the flexible finish resists cracking and adds a water-resistant protection for interior and exterior wood surfaces.
You'll use a clear sealer, like a polycrylic, to seal the paint on wood. I like to use Minwax Polycrylic Protective Finish to seal all of my projects. I apply with a nice paintbrush and let dry between coats.
Acrylic and urethane significantly differ in their durability and reaction to environmental stressors. Acrylic is generally less durable and more susceptible to scratches, UV radiation, and moisture. While it's often used for interior projects, it's less favored for high-traffic or outdoor applications.
Water-based oil-modified polyurethanes are an excellent choice for outdoor applications as they provide good durability while being less harmful to the environment.
Protect From Atmospheric Conditions
Weather, light, and dust will harm youracrylic paintings . Constantly shifting temperature and humidity are paintings' worst enemies. If the temperature gets too hot or too cold, this can cause the paint to flake and become unstable.
If you want something more durable, you can try an acrylic varnish or an acrylic polymer varnish. And if you're looking for a budget-friendly option, you can always use mod podge. If it's a painted glass surface, you might want to consider using a glass paint sealer.
Yes, Mod Podge will seal acrylic paint. It creates a protective barrier over the paint, preventing it from peeling or chipping. Depending on the project, you can choose from different finishes like matte, gloss, or satin.
Traditionally, varnishes provide surface protection from abrasion, dust and dirt. They also provide saturation to the paint they cover.
I use a Liquitex clear satin varnish on my completed acrylic paintings. It makes the colors a little more saturated and protects the finished painting from dust and dirt.
Apply a spray or brush-on acrylic sealer designed for outdoor use. Make sure to choose a sealer with UV protection to prevent fading and weather damage. Apply the sealer in thin, even coats and allow it to dry completely between applications.