How to Choose the Right Roof Coating for Your Business

Nov 8, 2024

Roof coatings can significantly extend your roof’s lifespan, enhance energy efficiency, and boost curb appeal.

High quality roof coatings offer protective benefits against various environmental elements and financial advantages, such as reduced costs compared to full roof replacements and tax deductions.

But with many options available, how do you choose the right roof coating?

Understanding Roof Coatings

Roof coatings are more durable than paint. They have a higher concentration of solids and premium resins, making them more elastic and weather-resistant.

This elasticity is important for an existing roof, as it naturally expands and contracts with temperature changes.

According to the Roof Coatings Manufacturers Association, coatings perform better than conventional paint when it comes to roof restoration.

Assessing Your Building’s Needs

When it comes to choosing the right roof coating for your building, it’s essential to assess your building’s specific needs.

This includes considering factors such as the type of roof, climate, and intended use of the building. Here are some key factors to consider:

Roof Type: Different types of roofs require different types of coatings. For example, flat roofs may require a coating that is more resistant to ponding water, while steep-slope roofs may need a coating that can withstand wind-driven rain. Understanding your roof type helps in selecting a roof coating that offers optimal protection and longevity.
Climate: The climate in which your building is located can significantly impact the type of coating you choose. Buildings in hot and sunny climates may benefit from a roof coating that resists UV radiation and reduces surface temperature, while those in cold and snowy regions might need a coating that can handle ice and snow without cracking.
Intended Use: The intended use of your building is also a big consideration in determining the right roof coating. For instance, buildings used for food processing or manufacturing may require a coating that is resistant to chemicals and grease. By considering these factors, you can choose a roof coating that meets the specific needs of your building and provides long-lasting protection against the elements.

Types of Roof Coatings

Several roof coating types exist, each suited for specific purposes and environments:

Acrylic Coatings: Affordable and durable, acrylic coatings work well on various roof types. Their high reflectivity, available in white and other colors, can significantly reduce roof surface temperature.
Silicone Coatings: Silicone roof coatings excel on metal roofs in wetter areas where ponding water is a problem. These coatings provide excellent protection and extend the life of your metal roof.
Fluoropolymer Coatings: These premium coatings offer exceptional reflectivity, color stability, and dirt resistance. They’re ideal for those prioritizing aesthetics and long-term UV protection. See GAF’s resources for more insights.
Urethane Coatings: If your building needs protection against weather and temperature changes, urethane coatings are popular for their chemical, mildew, and dirt pickup resistance. Spray Polyurethane Foam (SPF) is also used in roofing applications for its flexibility and ability to withstand temperature variations and water accumulation. However, SPF is susceptible to UV light, which can lead to discoloration and degradation over time. Learn more at GAF.
Polyurethane Roof Coatings: Polyurethane roof coatings are increasingly popular due to their flexibility and ability to withstand temperature fluctuations and ponding water.

Silicone Coatings: A Popular Option

Silicone coatings are a popular option for many building owners due to their durability and versatility. Here are some benefits of silicone coatings:

High-Performance: Silicone coatings are highly resistant to weathering, UV radiation, and extreme temperatures. This makes them an excellent choice for buildings exposed to harsh environmental conditions.
Waterproof: One of the standout features of silicone coatings is their 100% waterproof nature. This makes them ideal for buildings that are prone to ponding water, ensuring that the roof remains protected even in heavy rain.
Flexible: Silicone coatings are highly flexible, which means they can accommodate the natural expansion and contraction of the roof without cracking. This flexibility helps in maintaining the integrity of the roof over time.
Cost-Effective: Compared to other types of coatings, such as polyurethane or acrylic, silicone coatings offer a cost-effective solution. They provide long-lasting protection with minimal maintenance, making them a smart investment for building owners.

Silicone coatings are also suitable for use on a variety of roof types, including EPDM, built-up, bitumen, and metal roofs. They perform well in both hot and cold weather, making them a popular choice for buildings located in extreme climates.

Acrylic Coatings: A Water-Based Alternative

Acrylic coatings are a water-based alternative to silicone coatings, offering several benefits for building owners. Here are some advantages of acrylic coatings:

Easy to Install: Acrylic coatings are easy to install and can be applied using various methods, including spraying, rolling, or brushing. This makes them a convenient option for many roofing projects.
Environmentally Friendly: Being water-based, acrylic coatings are an environmentally friendly option compared to solvent-based coatings. They emit fewer volatile organic compounds (VOCs), making them a greener choice for your roof coating project.
Cost-Effective: Acrylic coatings are a cost-effective option compared to other types of coatings, such as polyurethane or silicone. They provide good performance at a lower cost, making them an attractive choice for budget-conscious building owners.
Versatile: Acrylic coatings can be used on a variety of roof types, including flat roofs, steep-slope roofs, and metal roofs. This versatility makes them suitable for a wide range of applications.

Acrylic coatings, however, might not last as long as silicone coatings and might need more frequent cleaning or recoating.

They are also more prone to damage from extreme temperatures and UV radiation. Despite these limitations, acrylic coatings remain a popular choice for many due to their ease of use and cost-effectiveness.

Factors to Consider When Choosing a Roof Coating

With several roof coating varieties available, understanding your needs helps determine the best material for the entire roof. To guarantee optimum performance and longevity, it is critical to understand which roof coating is appropriate for a given project.

Climate and Location

Your building’s location significantly influences the best coating choice. Acrylics excel in hot, dry climates by reflecting sunlight and reducing energy costs.

Silicone roof coatings are better in humid zones due to their waterproof nature and ponding water resistance.

For humid areas, a fast-drying, moisture-resistant silicone coating might be suitable. In areas with extreme weather or regular hail exposure, fluoropolymers are generally preferred.

Building Use and Compatibility

Different buildings have different roofing needs. Consider potential exposure to chemicals, grease, or foot traffic when choosing a coating. Some coatings, like urethanes, offer superior chemical resistance.

For guidance on matching coatings to specific applications, consider GAF’s insights for commercial roofing materials.

Roof Type and Condition

Your current roof’s type and condition affect your coating choices. A roof in good condition may only need a top coat for added weather and UV protection. This strategy is more cost-effective than a traditional roof replacement or tear-off.

For roofs with minor leaks or damage, light restoration and a silicone roof coating may suffice.

Budget and Expected Lifespan

Budget is a critical factor in roof coating selection. Acrylics are more affordable upfront. Other types, like fluoropolymers, offer long-term cost savings through increased energy efficiency. Silicone roof coatings also offer excellent value due to their long lifespan and low maintenance requirements.

Application Method

Professionals in the roofing industry typically handle roof coating applications.

For an even, efficient seal, the proper spray equipment is essential if you are thinking about doing your own spray application. Be sure to adhere to product specifications.

Spraying is a common method for applying silicone and polyurethane coatings.

Color and Aesthetics

Modern coatings come in various colors, enhancing your building’s aesthetics and functionality. Whether you need a classic white or a more unique color, there’s a roof coating to match your vision.

Consider the overall look of your property when making your selection.

Example: Choosing a Roof Coating

Consider a warehouse in a sunny, dry region. The owner wants a durable, cost-effective coating for their asphalt roof to reduce energy costs. Given the climate, budget, and desired longevity, a white acrylic roof coating is a strong contender.

However, if the warehouse stores flammable materials, silicone or urethane coatings might be better for fire safety. This highlights how each building needs an individual assessment to choose the right roof coating.

Conclusion

Factors like location and chemical exposure are essential when selecting a roof coating, as they impact building protection, service life, and reliability. Making informed maintenance decisions contributes to long-term building health.

Choosing the right roof coating involves several considerations. Prioritize key aspects to find the best coating for your specific building and goals.

Important factors include roof slope, visibility from the ground, aesthetics, and odor concerns, particularly in humid climates.

If you’re looking for ways to extend your roof’s lifespan and enhance its protection, Big Easy Roofing also offers professional roof coating services.

Our team can help you choose and apply the right coating tailored to your building’s unique needs and environmental conditions.

Visit our blog for more insights and tips for anything about roofing.