3 Highest-Rated Metal Roof Sealants in 2023 (Reviews)

Posted on June 28, 2023

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3 Highest-Rated Metal Roof Sealants in 2023 (Reviews)

One effective way to maintain the integrity of your metal roof is by using a high-quality sealant to protect rusty and vulnerable areas. Being a metal roofing specialist, I’ve worked with countless sealants and products to repair and maintain metal roofs. Today, I’m here to help you select a powerful metal roof sealant by reviewing the top three products on the market and sharing tips on how to choose the right one.

Understanding Metal Roofing Sealants

Roofing sealants are adhesive materials designed to waterproof and protect the joints and seams of a roof. For metal roofs, these sealants protect against leaks, rust, and roof damage. It acts as a barrier, preventing moisture, air, and debris from penetrating the roof’s surface. While sealing isn’t an alternative to more permanent repairs, it’s a vital component in ensuring the long-term durability of a metal roof.

Several types of sealants are suitable for metal roofs, including acrylic, polyurethane, butyl rubber, and silicone. They’re generally available in three forms: caulk, butyl tape, and spray-on applications. As their names imply, caulk sealants are applied using a caulking gun, butyl tapes are self-adhesive tape rolls, and spray-on sealants are distributed using spray cans or containers. All these metal roof adhesives offer effective protection, and you need to select the one that’s compatible with your roof’s panels and finish.

Here are the top three products suitable for almost every type of metal roof.

3 Of The Best Metal Roof Sealants in 2023

Let’s explore the best and trending sealants for metal roofs, discussing their features, customer reviews, and potential drawbacks.

1. Color Sealant from Liquid Rubber 

Color Sealant from Liquid Rubber

Liquid Rubber Color Sealant is a water-based, UV-stable coating that offers numerous benefits, including flexibility. Applying this sealant is similar to the process of painting, but it must be applied in thick coats to establish a robust and waterproof membrane. It can be used on a wide range of materials and for various types of projects. Moreover, it provides versatility in color choice, offering eight different options to suit individual preferences and project requirements.

Drawbacks: LR Color Sealant requires thick coats, which may increase the time and effort needed for sealing. It also means you’ll be using large amounts of the product, which can increase the cost if you need to cover a large area.

Customer Satisfaction

Overall, we have found that customers are highly satisfied with Liquid Rubber Color Sealant. They have used it on various surfaces, including aluminum siding, semi-rusted metal, roofs, and wooden structures. The application process is described as easy, similar to painting, and the sealant provides a durable, waterproof membrane. Users appreciate the product’s flexibility, long-lasting performance, and UV stability. The color options have also received positive feedback, with customers finding good matches to their existing paint. Cleanup is effortless, requiring only water. Overall, people are impressed with Liquid Rubber’s effectiveness in protecting and sealing different materials, making it the top recommendation.

2. Titebond WeatherMaster Metal Roof Sealant 

Titebond Weather Master Metal Roof Sealant 

Titebond’s WeatherMaster Metal Roof Sealant is a high-quality polymer formula that provides exceptional adhesion to various metals, such as Kynar® coated metals, aluminum, galvanized steel, copper, and more. It can be applied even at extreme temperatures, maintaining its flexibility permanently without cracking. The sealant adheres effectively to wet and damp surfaces while resisting dust and dirt.

Potential Drawbacks: Titebond roofing sealant does not fare well on roofs that experience significant ponding or pooling. In some cases, applying the sealant at high temperatures may cause it to sag.

Customer Satisfaction

We have found that customers describe Titebond sealant as a great option, noting that it’s the perfect thickness and is easy to apply. The sealant adheres well to different surfaces, including galvanized sheet metal, and is easy to clean. Customers express confidence in the product, highlighting its strong adhesion and its ability to address weak spots on metal roofs.

3. NovaFlex Metal Roof Silicone Sealant from NovaGard

NovaFlex Metal Roof

NovaGard Metal Roof Adhesive Sealant is a versatile product available in 40 colors and offers excellent adhesion to raw metal and coated metal, including Kynar. It forms a durable, rubber-like seal that is highly resistant to UV damage, chalking, or fading over time. Plus, it has an odor-free formula that can be easily applied with a caulking gun at any temperature.

Drawbacks: NovaFlex Metal Roof Sealant is not recommended for surfaces intended for painting. Additionally, it is not recommended for joints that have the potential to be continuously submerged underwater due to ponding or pooling. 

Customer Satisfaction

NovaFlex is a professional-grade sealant widely used by roofing contractors and homeowners. The product is well-regarded for its performance in different construction applications such as window, door, and siding installations. Customers appreciate the clean and aesthetically pleasing results achieved with the NovaFlex metal roof sealant.

When it comes to selecting the best metal roof sealant, it’s crucial to consider various factors. The top-rated options mentioned above, Liquid Rubber Color Sealant, NovaFlex, and Titebond, have already proven their worth in terms of performance and reliability. However, choosing the right sealant for your specific needs requires careful consideration. 

In the next section, I will explain the key factors to help you make an informed decision and select the most suitable metal roof sealant for your project.

Choosing the Best Metal Roof Sealant

When selecting a metal roof sealant, several factors should be considered to ensure the best performance and longevity. Here are some key considerations to keep in mind:

1. Roofing Material Compatibility

Different metal roofing materials may have specific requirements in terms of sealant compatibility. Before choosing a sealant, make sure it is suitable for the type of metal roof you have. Consider factors such as the roof’s slope, exposure to standing water, and metal used, such as aluminum or copper.

2. Weather Resistance

The sealant should be able to withstand local climate conditions, including temperature extremes, heavy rainfall, and UV exposure. Look for a sealant that offers excellent weather resistance to ensure long-lasting protection for your metal roof.

3. Application Method

Consider the ease of application of the sealant. Some sealants can be applied using a brush, roller, or sprayer, while others require specialized tools or equipment. Choose a sealant that aligns with your DIY capabilities and the available application methods.

4. Flexibility and Movement Capability

Metal roofs can expand and contract with temperature fluctuations, so it’s important to choose a sealant that can accommodate these movements without cracking or losing effectiveness. Look for a sealant with good flexibility and movement capability to ensure a durable and long-lasting seal.

5. Longevity and Durability

Invest in a sealant that offers excellent durability and longevity for your metal roof. Consider a product with a proven track record of performance and extending the longevity of the surface to which it’s applied.

Using a high-quality metal roof sealant can help prevent leaks, water damage, and expensive repairs. Consider the specific needs of your roof, the compatibility with your roofing material, and the desired level of protection when choosing a sealant. The top three sealants mentioned in this guide offer excellent performance and durability for metal roofs. By investing in the right sealant and following proper application techniques, you can ensure your roof’s long-term protection and integrity. 

Remember to consult a reliable metal roofing contractor in your area. Your roof might need some preparation before the sealant is applied, such as repairing minor damage. They will also be able to tell at this time whether you need a more robust defense like a metal roof coating instead of sealant, which is simply an alternative way to waterproof and seal your metal roof’s surface from damage.

Metal Roof

Metal Roof Coatings: Another Way to Waterproof and Protect Your Metal Roof

A metal roof coating refers to the application of a protective layer or coat to the entire metal roof, not just the joints. It acts as a protective layer, providing additional benefits such as enhanced reflectivity, insulation, and resistance to UV radiation. Metal roof coatings are typically formulated with specific additives and pigments to improve durability, weather resistance, and energy efficiency. Plus, they come in various colors, which is also a good way to improve the look of your home.

If you are looking for a good metal roofing sealant in Buffalo, New York, our team at OConnor Contracting is here to help.

Get a Free Consultation with Our Metal Roofing Experts

Ready to give your metal roof the care it deserves? At OConnor Contracting, we’re here to assist you every step of the way. With our caring and professional approach, we’ll provide expert advice and guidance to help you select the right roofing sealant and provide flawless metal roofing services in Buffalo, NY. We’re proud of our team, who ensure long-lasting protection and peace of mind. Contact us at (716) 600-7663 for a free consultation and estimate on your metal roof repair and sealing needs. 

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