Roofers applying an acrylic roof coating to large metal roof

Often referred to as the “original” elastomeric coatings, acrylic roof coatings are generally a popular choice for sloped metal roofs. They are also a serviceable solution for a variety of conventional flat roof substrates including modified bitumen, single-ply, EPDM, built-up roofs, and spray polyurethane foam.

Acrylic coating systems are a great solution to restore and protect commercial roofs. There are some important factors to consider when it comes to choosing this particular chemistry. Below, we examine some of the key strengths and weaknesses of an acrylic roof coating.

The Advantages


Compared to other chemistry types, acrylic roof coatings are less expensive and just as durable. This means building owners can expect an acrylic roofing system to deliver long-lasting performance, reduced energy consumption, and decreased maintenance costs.

This powerful combination of cost and performance is what makes acrylic coatings such a popular and sensible roof restoration solution.

UV Protection

Acrylic roof coatings are highly reflective and UV resistant. These important qualities can save money by drastically reducing cooling costs during the hot summer months. Minimizing the sun’s impact on the roof surface not only helps sustain lower energy costs as the system ages but also cools internal building temperatures and extends service life.

Easy to Install

As a water-based substance, acrylics are easy to work with and install. This means an acrylic roof coating system can be installed in a timely manner without sacrificing quality workmanship and with minimal disruption to day-to-day business operations. Also, installation teams will rarely encounter complications with application equipment, making them more productive and efficient.

VIDEO: Click here to watch an acrylic roof coating being applied with a tank spreader and metal profile roller.

The Disadvantages

Ponding Water

Ponding water will negatively impact the performance of an acrylic roof coating. Ideally, these coatings should only be used on sloped metal roofs or roofs with adequate drainage. Installing an acrylic coating on a flat roof can be very problematic if the roof does not drain properly.

Before installing an acrylic roofing system or product, it is important for building owners and managers to consult with a specialist to determine if the roof structure will encounter ponding water situations.

Cold Temperature Applications

Acrylic coatings are a water-based product and are more susceptible to freezing in colder temperatures. At the time of application, the outside temperature must be at least 50°F and rising, for the coating to properly adhere to the roofing substrate.

It’s also worth mentioning that the dry time of an acrylic coating will slow down considerably if the temperature falls below 50°F.

PRO TIPS: Click here to learn more about the challenges of installing roof coatings in cold weather.

Loss of Mil Thickness

As acrylic roofing systems age, they tend to lose mil thickness as a result of constant weathering and exposure to extreme environmental conditions. Before considering an acrylic product for your roof, ensure that it has undergone proper testing for specific roofing environments and applications.

Acrylic Roof Coating Products We Provide

Acrylic 211

Acrylic 211 is the core component of our Met-A-Gard System. It combines high-solids emulsion polymers and potent biocides to provide excellent durability, reflectivity, weatherproofing, and mildew resistance. This product is unique among elastomeric coatings because its elongation and tensile strength increase significantly at lower temperatures.

Learn more about Acrylic 211

High-Tensile Acrylic 211

High-Tensile Acrylic 211 is the central component of our Met-A-Gard+ System. It shares many of the same characteristics as Acrylic 211 but is specifically formulated with superior tensile strength, elongation, and color retention.

This product serves as an excellent protective membrane for metal roof surfaces and remains flexible under the most extreme environmental conditions. It’s also the best solution for custom-tint roof coating applications and comes available in a variety of custom colors.

Learn more about High-Tensile Acrylic 211


When it comes to the suitability and performance of a roof coating, it’s important to understand the strengths and weaknesses of the chemistry. Acrylic roof coatings are a highly effective roofing solution. There’s a number of key factors to consider when it comes to choosing the best acrylic roof coating system for a commercial roofing environment.

Want to know if an acrylic roofing system is right for your commercial facility? Click here to schedule a free roof inspection with an American WeatherStar Approved Contractor.