Metal Roof Sealant: 3 Best Options For Your Roof
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Metal Roof Sealant: 3 Best Options for Your Roof

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Posted By: Roof Troopers

metal roof with gables on a large house

Are you frustrated with leaks and the constant threat of water damage? Well, metal roof sealant may be the solution that will provide protection and peace of mind. If you’re not sure where to start, don’t fret. In this guide, we’ll explore the most effective roof sealants out there.

We’ll go over the details of each option, which will give you the information needed to make an informed decision. Finding the right sealant is essential for safeguarding your home and extending the lifespan of your metal roof. So, join us as we discover more about metal roof sealants.

The 3 Different Types of Metal Roof Sealants

Metal roof sealants come in various types, each offering different benefits. Understanding these options is essential in choosing the best sealant for your specific needs. Here are some of the most common metal roof sealants:

1) Silicone-Based Sealants

professional on the roof using adhesive to seal metal sheets

Silicone-based sealants are popular due to their exceptional durability and flexibility. They are resistant to extreme temperatures, UV rays, and moisture, making them an excellent choice for metal roofs.

Silicone sealants also provide a watertight barrier and can withstand ponding water. However, they can be more expensive compared to other options.

2) Acrylic Sealants

Acrylic sealants are affordable and easy to apply. They offer good adhesion to metal surfaces and are available in various colors. 

While acrylic sealants provide decent protection against UV rays, they’re not as durable as other options and may require frequent reapplication. Not to mention, they don’t do so well with creating a waterproof barrier.

3) Butyl-Based Sealants

Butyl-based sealants are known for their excellent adhesion and flexibility. They create a strong bond with metal surfaces, ensuring a long-lasting seal. 

Butyl sealants are resistant to water, UV rays, and other harsh environmental conditions. However, they can be more challenging to work with due to their sticky consistency.

The Best Metal Roof Sealant Brands

Now that you know about the different types of roof sealants, you may be wondering about the best brands to choose from. Check out our suggestions below:

  • Novaflex: This particular product comes highly recommended. It’s a non-corrosive silicone sealant that has incredible flexibility and adhesive properties. Although you cannot paint this type of sealant onto your metal roof, it comes in many colors to ensure that it blends well with a variety of looks.
  • Butyl Tape: If you’re looking for a quick, easy option, this is it. Butyl tape works great for sealing the end of metal panels, as well as the cracks around vents and pipe flashing. It does not bleed or stiffen, and it’s designed to hold up well against temperature fluctuations.
  • Titebond: Last but not least, Titebond is made of a polymer formula that blends well with a variety of metals. Not only that, but it works great for doors, windows, and gutters.

Choosing a Metal Roof Sealant

worker using glue gun to seal metal sheets on roof

Selecting the right metal roof sealant involves considering various factors that can affect its performance. Below are a few key qualities to keep in mind when picking a sealant for your metal roof:

Compatibility With Metal Surfaces

Make sure that the sealant you choose is specifically designed for metal roofs. Some sealants may have different adhesion properties and compatibility with metal. Check the manufacturer’s recommendations to ensure the sealant suits your specific metal roofing material.

Weather Resistance

Metal roofs are exposed to harsh weather conditions, including high winds, heavy rain, and extreme temperatures. Choose a sealant that offers excellent weather resistance. By doing so, it’ll protect against leaks, cracks, and other damage caused by nature.

The Application Method

Consider the ease of application when picking a sealant. Some sealants require professional installation, while others can be applied by homeowners. If you prefer a DIY approach, opt for a sealant that’s easy to use and comes with clear instructions.

Longevity and Durability

Investing in a high-quality sealant will ensure long-lasting protection for your metal roof. Look for sealants that offer good durability and have a proven track record of performance. Customer reviews and ratings can provide valuable insights into the longevity and effectiveness of a particular sealant.

Common Metal Roof Sealant Problems

While metal roof sealants are designed to provide long-lasting protection, certain problems can arise if not applied or maintained correctly. Being aware of these issues can help you avoid them and ensure the effectiveness of your sealant. Here’s what to look out for:

Improper Surface Preparation

construction worker inspecting metal roof on house

One of the most common causes of sealant failure is improper surface preparation. Before applying a sealant, it’s essential to clean the metal surface thoroughly and remove dirt and debris. Use a wire brush or sandpaper to create a clean and smooth surface for optimal adhesion.

Inadequate Sealant Application

Applying too little or too much sealant can lead to problems down the line. Insufficient application may result in weak spots and potential leaks.

On the other hand, excessive application could cause the sealant to crack or peel. Follow the manufacturer’s guidelines regarding the recommended thickness and coverage area for proper application.

Lack of Regular Maintenance

Metal roof sealants require regular maintenance to ensure that they’re working optimally. Inspect your roof regularly for signs of damage, such as cracks, peeling, or disintegration of the sealant. Promptly address issues to prevent further damage and maintain the integrity of the seal.

Incompatible Sealant 

Using a sealant that’s not compatible with your metal roofing material can trigger adhesion problems and a weak seal. Check the product details to ensure that the sealant is right for your metal roof. To be on the safe side, you may have to consult with a professional if you’re unsure about compatibility.

Overall, by avoiding these common problems and properly maintaining your metal roof sealant, you can ensure its effectiveness and prolong the lifespan of your roof.

We’ll Handle the Tough Jobs

While metal roof sealant has its advantages, it’s not a magic solution. When your metal roof requires true repair, sealant isn’t going to get the job done. So, if your roof is damaged, reach out to Roof Troopers.

Our team of talented contractors can get your metal roof up to par in no time. Whether it needs to be fixed or replaced, we can handle the job. For more information, call us at 571-465-9907, or get in touch with us online. We’ll get in contact with you shortly!


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