How Long Does Spray Paint Take to Dry?
Shake, spray, and set a timer
Highlights
Spray paint can take anywhere from five minutes to eight hours to dry.
It’s a good idea to wait 24 hours for the paint to dry fully.
Dry time factors include the paint type, material, surface, and climate.
Choose a fast-drying paint to speed up the drying time.
Whether you’re giving your old wooden barstools a facelift or transforming your metal patio furniture into something bright and new, spray paint is a simple and fast method for home improvement projects. But knowing how long your spray paint will take to dry can be a little confusing. Before tackling your latest DIY project, here’s everything you need to know about spray paint dry times and what might impact how long you wait.
How Does Spray Paint Work?
Spray paint is an aerosol paint that comes in a pressurized can. Pressing on the valve causes the liquid inside the container to merge with pressurized gas (industrial spray paint) or compressed air (commercial spray paint) before spraying the surface you’re painting. These mechanisms give you great control of your application, enabling you to apply spray paint to all kinds of surfaces.
Spray Paint Dry Time Factors
Many factors impact the dry time of your spray painting project. To get an accurate estimate, you’ll want to consider each of the following variables:
How Long Does Spray Paint Take to Dry by Spray Paint Type?
The type of spray paint you choose can mean the difference between five minutes and eight hours of dry time. Before you head to the local home improvement store and pick up any old can, check out these dry times so you’re not in for a surprise:
Fast-drying general-purpose spray paint: 5 minutes
Acrylic spray paint: 30 minutes
Latex: 8 hours
Oil-based spray paint: 8 hours
Lacquer spray paint: 3 hours
Epoxy spray paint: 1 hour
Rust-preventive enamel spray paint: 8 hours
How Long Does Spray Paint Take to Dry by Material Type?
Wood, metal, and plastic are some of the most common surfaces for spray paint—and each one comes with specific properties that affect how long your spray paint will take to dry.
Wood Surfaces
Expect a wooden spray-painted surface to take around one to two hours on average to dry to the touch and a full 24 hours to completely dry. Spray painting wood surfaces can take longer than other surfaces to dry because wood is porous. This factor allows moisture from the spray paint to enter into the material, where it takes more time to evaporate from the wood.
Metal Surfaces
Most spray paint for metal surfaces will feel dry after just 10 minutes, but you'll still want to wait a full 24 hours to be sure. A metal surface generally dries faster than wood or plastic surfaces.
Plastic Surfaces
Spray paint takes 30 minutes to dry on plastic surfaces—if you can get it to stick to the surface in the first place, that is! Plastic is notoriously hard to spray paint because it’s too smooth to offer much adherence.
How Long Does Spray Paint Take to Dry by Surface Texture?
The texture of your surface material also plays a role in how long spray paint takes to dry. You’ll need to adjust the dry time of your surface material based on the following factors.
Rough and Porous Textures
Because rough surfaces contain an irregular texture, there will be less consistency in the paint. Any texture adds time to the drying process. For instance, a popcorn ceiling will take much longer than a flat, smooth one. If your surface is bumpy and porous, add on an extra few hours.
Smooth and Nonporous Textures
Smoother surfaces will dry faster than rough surfaces because they have a consistent texture that allows for the paint to dry at an equal rate. Your smooth surface will dry even faster if it is nonporous.
How Long Does Spray Paint Take to Dry by Climate?
For both indoor and outdoor applications, your climate impacts the dry time of your spray paint. Here’s what to expect depending on where you live.
Arid Climates
Windy, arid climates have an advantage when it comes to how long spray paint dries. A well-ventilated area with low humidity will encourage the water in the paint to evaporate faster. If your home’s humidity is too low, however, this can cause the paint to crack. Aim for a humidity level somewhere between 40% and 50%.
Humid Climates
The opposite is true for humid climates. Much like your hair won’t seem to dry after taking a shower on a muggy, humid day, your spray paint will take longer to dry. If the humidity is above 85%, use a fan, crack the windows, and leave doors open to increase the airflow in your workspace for a faster drying time.
Warm Climates
Late spring is a popular time for projects, and while that nice weather is a major perk, you’ll also find that your spray painting project will dry faster at this time of year. Just be sure not to wait too long in the year, as applying paint on scorching hot days can cause your paint to dry too quickly and crack or blister.
Cold Climates
While most people won’t be out spray painting in the dead of winter, it’s worth noting that temperatures below freezing are too cold for spray paint. Like any paint, spray paint can freeze or change in consistency if it’s below 32 degrees Fahrenheit.
How Long Does Spray Paint Take to Dry By Application?
Thin coats of spray paint will dry faster, while thick coats will take longer to dry. Not to mention, adding too much paint to your surface can lead to runny, dripping paint that takes a long time to dry. Instead, apply thin, even coats to avoid waiting a long time for your paint to dry.
How Long Should Spray Paint Dry Before Adding Another Coat?
How long you wait for your spray paint to dry before adding another coat depends on the type of spray paint you choose. Generally speaking, you’ll want to wait anywhere between two and three hours before you apply another coat of paint.
Tips for Drying Spray Paint Faster
Waiting for paint to dry can feel a little like watching the grass grow or waiting for a pot of water to boil. Here’s how you can speed up the process:
Pick a fast-drying general-purpose spray paint or acrylic spray paint.
Choose a metal surface.
Avoid porous surfaces.
Apply thin layers to your surface.
Pick a warm, slightly arid day to spray paint.
Choose a smooth surface over a bumpy one.
Use a space heater for cold climates.
Frequently Asked Questions
Most spray paint is fully dry after 24 hours, but knowing when the spray paint is dry depends on the type of dry paint criteria. Surface dry is a surface that’s dry enough for you to apply another coat of paint. Touch dryness is a little dryer than surface dryness and will feel dry if you gently touch it, but it’s really wet underneath the initial touch. Hard dry feels fully dry but can dent or smudge upon extra pressure. Thoroughly dry paint is completely dry.
You should apply at least two coats of paint to your project, but some surfaces may benefit from a third coat of paint. Ensure you’ve waited the right length of time before applying a second or third coat of paint, and try to apply it evenly for a cohesive finish.