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5 Best Metal Roof Sealants And Their Uses

Posted on December 6, 2022

Estimated Reading Time : 7 Min.

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5 Best Metal Roof Sealants And Their Uses

The roof of your home or business is one of the most important parts of your property. It keeps you safe from the elements and helps protect your interior from water damage. However, despite its importance, it’s often taken for granted until something goes wrong.

If you have a metal roof, you need to take certain steps to maintain its integrity and prevent leaks from occurring. One way to do this is by sealing it with a quality metal roof sealant.

In this blog, we’ll discuss five of the best sealants on the market right now and their uses. By learning more about them, you’ll be able to determine which one is right for your needs and make sure that your metal roof stays protected for years to come!

What Is Metal Roof Sealant?

Metal roof sealant is a material applied to the joints and seams of a metal roof to protect against leaks and water damage. It forms a barrier against moisture, air, and airborne particles, and helps to prevent or repair leaks.

However, remember that metal roof sealant is not meant to be the primary source of protection against water intrusion, but rather an additional layer of defense.

Several types of metal roof sealant compositions are available, including acrylic, polyurethane, butyl rubber, and silicone. Silicone sealant is often the preferred choice for metal roofing systems, as it adheres well to metal and other common construction materials. It also offers excellent moisture and UV protection and has exceptional joint movement capabilities.

There are two main types of metal roof sealant: gun caulking sealant and butyl tape. Gun caulking sealant is applied using a caulking gun, while butyl tape is a self-adhesive applied to the roof’s seams and joints.

Both types of sealant are effective at sealing and protecting metal roofs, but choosing the right one for your specific needs and roof type is important. We will discuss how to choose the best metal roof sealant later in the blog. Keep reading!

Top 5 Metal Roof Sealants

We’ll introduce you to some of the best sealants on the market and provide you with information on their key features and benefits. Whether you prefer rubberized coatings or flexible tapes, we’ve covered you with our top picks.

#1 LR Liquid Rubber Color Waterproof Sealant

LR Liquid Rubber Color Waterproof Sealant is the best metal roof sealant formulated particularly for metal roofing systems. It is a water-based formula that can be applied using a brush, roller, or sprayer, and dries into a thick rubber membrane that is highly waterproof and UV-resistant. The waterproof barrier is resistant to pooling water, making it suitable for both flat and sloped roofs.

LR Liquid Rubber Color Waterproof Sealant
Image source: shopliquidrubber.com

One of the main advantages of LR Liquid Rubber Color Waterproof Sealant is its versatility. It can be used on various surfaces, including metal, concrete, and wood, making it a versatile choice for sealing and protecting various structures. However, it should be noted that it is limited to a few specific materials and may only be suitable for some types of roofs.

In terms of product specifications, LR Liquid Rubber Color Waterproof Sealant comes in a 1-gallon size and is easy to apply using a brush, roller, or sprayer. One potential downside is that it may remain sticky after application, but overall, it is a highly effective choice for sealing and protecting metal roofs.

#2 NovaFlex Metal Roof Sealant

NovaFlex metal roof sealant is the second on our list because of its unbeatable adhesion and flexibility. It is a non-corrosive, single-component, oxime-cured silicone sealant and adhesive that is compatible with a wide range of metal roofing materials. Novaflex is also color-matched to over 70 industry-standard metal colors used by roofing manufacturers nationwide, so you can easily find a shade that seamlessly blends in with your roofing system.

NovaFlex Metal Roof Sealant
Image source: novagard.com

One of the standout features of NovaFlex is its ability to create a consistent, watertight gasket between metal roofing components. It has a lower viscosity than many other metal roof sealants, which allows it to spread out and move easily in joints. This makes it an excellent choice for sealing seams, trims, and other metal roofing joints.

However, it’s important to note that you cannot paint Novaflex sealant, and it should be applied immediately after riveting trims and joints together. If you allow it to dry before trying to rivet the joint, it may be difficult to form a watertight seal. Overall, NovaFlex is a reliable and effective choice for sealing and protecting metal roofing systems.

#3 GE Silicone 2® Metal Roof Sealant

Metal Roof Sealant
Image source: gesealants.com

It’s not every day that you find a metal roof sealant like GE Metal Silicone 2® Sealant.

This high-grade, 100% silicone sealant is among the top three metal roofing sealants on our list. It is ideal for repairing metal roofs and other surfaces such as siding, sheds, recreational vehicles, gutters, and vents. It’s rated as one of the best metal roof sealants on the market due to its excellent adhesive qualities and ability to adhere to dry, wet, and porous surfaces.

This sealant is 100% weatherproof and has a 30-minute rain-ready formula that is resistant to cracking and shrinking even in extreme weather conditions. It also has a 10-year mold-free product protection to help it resist mold and mildew growth.

GE Metal Silicone 2® Sealant is permanently flexible and backed by a lifetime guarantee. It is a reliable and effective choice for sealing and protecting metal roofs.

#4 Titebond Metal Roof Sealant

If you’re looking for a quality sealant for your metal roofing projects, Titebond WeatherMaster Metal Roof Sealant is fourth on our list. This high-quality product is known for its excellent adhesion to Kynar-painted metal roofing and galvanized steel, as well as its ability to remain flexible through expansion and contraction cycles. This makes it an effective choice for creating a weather-tight bond on metal roofs.

Titebond Metal Roof Sealant
Image source: titebond.com

Titebond WeatherMaster Metal Roof Sealant has a good consistency, even in cold weather, and is known for sticking well to damp and dirty surfaces. Its polymer formula makes it compatible with all metals and the most common building materials, making it a versatile choice for sealing and protecting a wide range of structures. Overall, this metal roof sealant is a reliable and effective choice for metal roofing projects.

#5 Gorilla Waterproof Patch and Seal Spray

The final product on our list is Gorilla Waterproof Patch and Seal Spray. It is a reliable, effective metal roof sealant that is designed to seal out water, air, and moisture. The self-leveling formula covers small gaps and cracks, creating a watertight seal on metal roofs. Its applicator nozzle has a controlled spray pattern, making it easy to apply evenly.

Gorilla Waterproof Patch and Seal Spray
Image source: gorillatough.com

One of the main benefits of Gorilla Waterproof Patch and Seal Spray is its ability to create a protective coating on metal roofing materials. It is flexible and can withstand temperature and UV exposure, making it a durable choice for sealing and protecting metal roofs. Additionally, once it has dried, you can paint it, allowing you to customize the look of your metal roof.

In addition to its flexible, rubberized coating, Gorilla Waterproof Patch and Seal Spray have several other useful features. Suppose you only need to repair a small section of your roof. In that case, Gorilla also offers a 10-foot roll of metal roof sealant tape that creates a permanent bond on various roofing materials, including metal, rubber, plastic, and acrylic.

However, you should note that the strong bond created by this tape may make it difficult to remove without damaging the underlying materials.

How To Choose The Right Metal Roof Sealant

When it comes to metal roof sealants, you’ll want to consider various factors, such as the condition of your roof, the specific needs of your property, and the climate in which your property is located. As a rule of thumb, choose a water-based formula that you can apply with a roller, brush, or sprayer for smooth application and a thick rubber membrane that’s resistant to UV and moisture. If your roof is flat or has a low pitch, be sure to look for a sealant that can withstand ponded water.

While it may seem tempting to try and patch and seal your metal roof on your own, it’s important to remember that doing so can be risky if you don’t have experience with metal roofing. We recommend working with a reputable local roofing contractor to avoid any potential leaks that could lead to costly water or structural damage. This way, you can be confident that your metal roof will be properly repaired and sealed, protected from water damage.

Talk To The Most Trusted Metal Roofing Company In Wisconsin

If you’re in Wisconsin and need metal roofing services, BRH Enterprises can help.

We are a full-service metal roofing contractor who can help you with all your needs—no matter how big or small.

We specialize in repairing and sealing metal roofs so that they’re properly protected from water damage. Whether you need a simple patch or a full roof replacement, our team of experienced professionals has the tools and skills to get the job done right.

Contact us today at (920) 249-4228, to learn more about how we can help you with your metal roofing needs!

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