Metal is one of the best roofing materials for your roof. Metal roofs are highly durable, last for decades, and of course, look great on your home. As a homeowner with a metal roof, you do not have to worry about damage from severe weather or pests. But over time, like every material, metal roofs can develop issues.
Exposure to harsh weather conditions, temperature fluctuations, UV radiation, and environmental pollutants can gradually compromise the roof’s integrity. Tiny gaps, seams, and potential rust spots can emerge. The longer you neglect these, the worse they become.
This is where metal roof sealants become crucial. We’ll explore the top five metal roof sealants that offer superior protection, ease of application, and long-lasting performance. Whether you’re dealing with minor repairs or seeking preventative maintenance, these sealants will help you maintain your metal roof’s durability.
Why You Need Sealants That Are Specialized For Metal Roofs
Metal roofs expand and contract with temperature changes, making them prone to leaks and joint failures if not properly sealed. Specialized sealants are designed to remain flexible, adhere to metal surfaces, and withstand extreme weather conditions. Unlike general-purpose sealants, they resist UV damage, corrosion, and thermal movement for long-lasting protection. Using a sealant specifically formulated for metal roofs helps maintain the roof’s integrity and prevents damage over time.
Metal roof sealants come in a few types to suit different needs:
- Silicone Sealants: Known for their flexibility and weather resistance, they adhere well to metal and resist UV rays and temperature changes.
- Polyurethane Sealants: Durable and paintable, ideal for high-traffic or exposed areas.
- Acrylic Sealants: Water-based and eco-friendly, suitable for waterproofing and energy efficiency.
- Elastomeric Sealants: Elastomeric sealants are ideal for areas that experience significant movement or thermal expansion, making them a popular choice for long-lasting roof protection.
What Is The Best Sealant For Metal Roofs?
There are many quality roofing sealants available on the market and each has different uses and formulas. But don’t worry. We have done the hard work for you. We have narrowed it down to the five best metal roof sealants.
#1 Liquid Rubber MetalSafe Sealant
With 20 years of industry expertise, Liquid Rubber has become one of the go-to companies for roof sealants and coatings. The company stands tall when it comes to metal roof sealants too. Its premier offering, MetalSafe Sealant, is a trusted solution for protecting metal roofs against corrosion and water damage. This high-performance sealant creates a durable, waterproof membrane that will not crack, chip, or rust.
Designed for extreme environments, it performs well in both hot and cold conditions and even adheres to lightly rusted surfaces. What sets Liquid Rubber apart is its eco-friendly, non-toxic formula, making it safe for indoor, outdoor, and small space applications. You can also use it without a primer. Offering excellent adhesion, chemical resistance, and UV protection, this metal roofing sealant comes with robust warranties for long-term reliability.
- Used For: Roofs, gutters, and other metal surfaces.
- Size Options: 1 gallon/5 gallon
- Color: Black
#2 Metal Silicone 2® Sealant by GE
GE is a name trusted worldwide for innovation and reliability, and their Metal Silicone 2 Sealant lives up to that reputation. This 100% silicone sealant is both waterproof and weatherproof, designed to provide long-lasting protection for metal roofs and other surfaces. It is resistant to UV degradation, resists mold and mildew growth, and remains permanently flexible to withstand shrinking and cracking. With excellent adhesion to porous materials and wet or dry surfaces, it’s ideal for challenging conditions. This sealant is rain-ready in just 30 minutes and won’t discolor high-end metal finishes like chrome, bronze, or nickel. Also, this metal roofing sealant is backed by a lifetime guarantee, ensuring peace of mind.
- Used For: All metal surfaces, brick, stone, stucco, concrete, cement, and more.
- Size Options: 10 oz cartridge
- Color: Metallic gray
#3 Liquid Rubber Color Sealant
Another innovative product from Liquid Rubber, the Color Sealant combines the brand’s signature durability with a touch of aesthetic versatility. This highly flexible and UV-stable sealant boasts over 1,000% elongation for long-term protection against the elements. With coverage of up to 30 square feet per gallon on vertical surfaces, it’s a practical solution for various applications. The water-based formula is free from solvents, VOCs, and harmful odors, making it safe for humans and pets. Perfect for both indoor and outdoor use, it seals joints, seams, vents, gaps, and protrusions with ease, delivering a seamless, waterproof finish.
Apart from metal roofs, this sealant can also be used on flat roofs, concrete, foundations, and more.
- Used For: Roofs, foundations, basements, metal surfaces, and more.
- Size Options: 1 gallon/5 gallon
- Color: White, barn red, beige, and five other color options
#4 NovaFlex Metal Roof Sealant
NovaFlex Metal Roof & Panel Adhesive Sealant is a versatile, high-performance solution for sealing and protecting metal roofs. Designed to cure without corroding, it forms a durable, rubber-like solid that resists UV light, so it won’t chalk or fade over time. This sealant offers excellent adhesion to metal roofs and coated metals, making it perfect for both exterior and interior applications. Permanently flexible, it resists shrinking, cracking, and water penetration. With a quick tack-free time of 10 minutes and full curing in 48 hours, it’s as efficient as it is reliable. This popular metal roofing sealant is solvent-free, odorless, and easy to apply in all temperatures. Even though Oklahoma rarely gets snowfall, NovaFlex remains workable even in freezing conditions.
- Used For: Metal roofs, wood, masonry, PVC, and most common construction materials.
- Size Options: 10 oz/20 oz cartridge, 5 gallon/55 gallon
- Color: This roof sealant for metal roofs is available in more than 30 colors. Some of them include white, copper, and regal red.
#5 Sashco Through The Roof! Sealant
Backed by 84 years of family expertise, Sashco Through The Roof! Sealant is a reliable solution for long-lasting roof leak repairs. This roofing sealant for metal outperforms asphalt-based options, lasting up to 20 times longer while maintaining its elasticity and watertight properties over the years.
What makes this metal roof sealant different is its application. The company uses a special co-polymer rubber that helps it stay transparent, blending seamlessly with your roof’s appearance. Plus, this sealant will not change color or turn yellow. Unlike other metal roof sealants, Through The Roof! is paintable, allowing for a professional and polished finish. Like others on our list, this can also withstand extreme temperatures from zero degrees to 120 degrees. This makes the sealant a dependable choice for metal roofs.
- Used For: Metal, plastic, concrete, and more.
- Size Options: 10.5 oz cartridge, 1 quart, 1 gallon
- Color: Clear
Direct Sealant Comparison
Here is a direct comparison of the top sealants mentioned above:
| Name of Sealant | Type | Overall Rating |
| Liquid Rubber MetalSafe Sealant | Elastomeric | 4.8/5 |
| Metal Silicone 2 Sealant by GE | Silicone | 4.8/5 |
| Liquid Rubber Color Sealant | Acrylic elastomeric | 4.5/5 |
| NovaFlex Metal Roof Sealant | Silicone | 4.5/5 |
| Sashco Through The Roof! Sealant | Elastomeric | 4.7/5 |
Trusted Metal Roof Repair Services In Oklahoma
All these metal roof sealants have one thing in common: they can do the job perfectly. However, even though most of these sealants are easy to use, hiring a professional is still important for precise application.
If your metal roof is damaged and you need a professional roofing contractor for roof repairs, look no further than A. Fricker Roofing and Waterproofing. Whether your metal roof has rust, dents, or gaps, our fully licensed roofing experts will address every issue with expertise and dedication. Get started with repairs and bring your roof back to its best. Contact us today at (918) 402-7167.
