Your Ultimate Guide to Applying Elastomeric Paint

elastomeric paint

When you want a finished look for an outdoor project, paint is usually the go-to covering. If the surface you’re covering is a water-bearing surface, or if it tends to flex a bit due to stress from winds, foot traffic or snow load, then elastomeric paint is ideal. Elastomeric is a word for a substance that will return to its original shape and size after being stressed, stretched, or compressed. Elastomeric paints are often chosen over traditional oil or latex paints because of their durability and waterproofing qualities.

Knowing how to apply elastomeric paint is no trade secret, although it should be applied by a professional. It does not take special brushes or rollers, just experience and good working knowledge about the basics of applying this coating. Here are some tips on how to apply elastomeric paint.


As with any other painting project, preparing the surface to accept and bond with the elastomeric coating is a crucial part of the application process. The areas you intend to coat should be cleaned with a quality detergent that will not leave a film or cause the surface you’re covering to peel. If needed, the old paint should be scraped off or pressure washed before coating. Oxidized or badly peeling surfaces will not hold up well after being painted, no matter how good your elastomeric coating is. Likewise, a badly prepared surface will show through in the end.

Small hairline cracks in stucco or masonry are easily covered up with elastomeric coatings, but anything larger than 1/16″ should be filled with a compatible substance, like mortar or patching cement. Larger cracks that are not expected to spread should be bridged with fiber-reinforced tape.


Follow the manufacturer’s recommendations as to whether you need a primer. Unpainted block or stucco surfaces will need to be prepared differently than bare wood or previously painted surfaces. Make sure the elastomeric coating you choose is designed for the surface you’re painting. There are different formulations for different surfaces. Elastomeric coatings do not penetrate far below the surface of what you are painting, which makes the application of a good primer coat important.


Again, reading and following the manufacturer’s instructions on application is critical to the outcome of the job. Wet film thickness and dry film thickness are usually a good indicator of the quality of your work. The recommended values of each should be followed, as this can affect the performance and lifespan of the product. Multiple coats are preferred over one thick coat to ensure even coverage. Thick coats tend to sag and look lumpy.

Get to areas around pipes, windows, and electrical boxes with a brush. Use a thick nap roller in an overlapping ‘V’ pattern in the ‘field’ or large flat surfaces. Airless sprayers can be used, but require a lot more equipment, special size spray tips and more training than most DIY homeowners have.

Professional Painting Services

For professional assistance in applying elastomeric paint, contact us. At Ameriside, our experienced professionals can help with all of your elastomeric painting needs and more. Contact us today to get started!

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