The Elastomeric Paint Guide: Should You Use It?
- Devin Spahr
- Mar 25
- 4 min read
Elastomeric paint has a unique name, but it perfectly describes what this paint does. It stretches and moves with surfaces thanks to its elastic-like qualities. This flexible, moisture-resistant coating is made to protect masonry surfaces like stucco and concrete. However, it’s helpful to know when to steer away from it because there’s a better option for the specific project you’re working on. Continue reading, and we’ll fill you in on the pros and cons of elastomeric paint and everything you need to know. If you need a painter in the Tucson area, we can help! We serve the entire area including Oro Valley, Sahuarita, Marana, and more. Click the button below to get a free estimate!
What is Elastomeric Paint?
Elastomeric paint goes on as a liquid and then hardens into a tough, watertight covering. It’s thicker than regular paint and stretches to cover cracks, keeping water out. If your walls expand and contract with the weather, this paint moves with them instead of cracking. Plus, it lasts longer than standard paint, so you won’t have to repaint as often. If you want durability and protection from the elements, elastomeric paint is a solid choice.
When To Use It
We already know it's good for masonry surfaces such as stucco, brick, and concrete, but what other times should you use elastomeric paint? It’s best for outdoor projects like homes, buildings, and retaining walls where cracks and moisture are a concern. The ideal time to apply it is during warm, dry weather, typically in spring or fall, since extreme heat or cold can affect drying. Avoid painting in rainy or humid conditions because moisture can cause issues. If your goal is sealing and protecting masonry, elastomeric paint is a solid choice—just make sure the surface is clean and properly prepped.
When Not To Use It
This paint isn’t the best choice for every surface. Avoid using it on wood, drywall, or any surface that needs to breathe. Since it forms a thick, waterproof layer, it can trap moisture inside, leading to mold or peeling. It also isn’t ideal for high-traffic areas like decks or floors because it’s not designed to handle constant wear.
If a surface already has multiple layers of paint, elastomeric paint might not stick well and could start peeling. It also requires careful prep work, so if you’re looking for a quick, easy paint job, standard acrylic paint might be better.
Can You Use It On Metal?
We typically don’t recommend elastomeric paint for metal surfaces. It’s designed to stretch with materials like stucco and concrete, but metal doesn’t expand and contract the same way. While it might stick at first, it can peel or crack over time as metal reacts to temperature changes. If you need a durable, weather-resistant coating for metal, look for paints specifically made for metal surfaces, like acrylic or epoxy-based options.
Pros and Cons of Elastomeric Paint
Pros:
Waterproof barrier – Seals surfaces and prevents water damage.
Crack bridging – Stretches to cover small cracks, reducing the need for frequent repairs.
Durable and long-lasting – Outlasts standard paint, meaning fewer repaints.
Great for stucco and masonry – Works well on porous surfaces.
UV and weather-resistant – Holds up against sun, rain, and temperature changes.
Cons:
Not ideal for metal or wood – Can crack or peel on surfaces that don’t expand the same way as masonry.
Thicker and harder to apply – Requires special rollers or sprayers for even coverage.
More expensive than regular paint – Higher upfront cost, though it lasts longer.
Takes longer to dry – Needs extra time to fully cure before exposure to moisture.
Can trap moisture if not applied correctly – Poor prep can lead to issues with mold or peeling.
Is It The Best Paint For Stucco?
It’s hard to say what the best paint for stucco is because everyone has their own opinion. However, there are three main types we generally recommend:
Elastomeric paint
Masonry paint
Acrylic paint
We don’t recommend oil-based paints for stucco walls because they don’t allow the surface to breathe.
Common Mistakes to Avoid With Elastomeric Paint
One of the biggest mistakes with elastomeric paint is not preparing the surface properly. Because this paint is thick and designed to seal cracks, many assume it will fix underlying issues. But if a surface is dirty, peeling, or has loose material, the paint won’t adhere correctly. Always clean the area thoroughly and repair any major damage before painting.
Another common issue is applying the paint too thick or too thin. Elastomeric paint needs a consistent, even coat to work properly. If applied too thick, it can dry unevenly or develop weak spots. If too thin, it won’t provide the waterproof barrier it’s meant to. Using the right tools, like a high-quality roller or sprayer, ensures the best coverage.
Finally, most people don’t allow enough drying time between coats. Since elastomeric paint is denser than regular paint, it takes longer to dry. Always follow the manufacturer’s drying recommendations and avoid painting before rain or high humidity. Proper application ensures the paint lasts longer and does its job effectively.
The Elastomeric Paint Guide Conclusion
Elastomeric paint is a great option for protecting a variety of surfaces, but it’s important to know when and how to use it. Proper prep, the right application techniques, and good weather conditions all play a role in getting the best results. If applied correctly, it can provide long-lasting protection against water, cracks, and weather damage.
If you're looking for a professional painter in the Tucson, AZ, area with a great reputation and fair pricing, give our team at Spahr’s Painting a call. We’ll make sure your project is done right the first time!
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