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Has your flat roof started showing signs of aging? Maybe you've noticed small puddles forming after rain, or perhaps there's a slight dampness in your ceiling that wasn't there before.
These are common signs that your EPDM rubber roof might need attention, specifically in the form of proper sealing.
As Pennsylvania's trusted roofing experts, we at McClellands Contracting and Roofing, LLC understand how important it is to address these issues quickly and properly to protect your property.
In this article, we will go through the importance of sealing EPDM roofs and the five best EPDM roof sealants you can choose.
Are EPDM Roof Sealants Important For The Protection Of Your Roof?
Yes, of course! Over time, weather exposure, temperature changes, and natural aging can create vulnerable spots on your EPDM roof, especially around seams and edges. That's where a quality EPDM roof sealant comes into play.
These specialized sealants work like a protective shield, filling in gaps and reinforcing weak areas before they become serious problems. They create a waterproof barrier that stops leaks in their tracks and prevents moisture from seeping into your building.
The best part is that roof sealants are simple to apply and can significantly extend your roof's lifespan. They're particularly effective at protecting tricky areas around pipes, vents, and corners where most leaks start.
5 Best EPDM Roof Sealant Options That You Can Choose
Here, we have listed some durable and protective EPDM sealants. While many of these products are available for DIY application, getting professional help ensures the job is done right the first time.
#1 Liquid Rubber Waterproof Sealant
We can't say enough good things about the waterproof sealant from Liquid Rubber. Many roofers like this product because it's so easy to work with. You can easily apply this EPDM roof sealant with a brush or roller.
All you need to do is brush it on, roll it, or even spray it. What makes it really unique is it has up to 900% elongation without breaking, which is perfect for those tough Pennsylvania winters when your roof is expanding and contracting.
Product Highlights
👉 Safe to use around your family and pets.
👉 Handles hot summers and cold winters.
👉 Safe to use on almost any roof surface.
👉 Over 1,000,000 gallons of the sealant have been sold.
#2 Flex Seal Liquid®
Flex Seal Liquid® is another best EPDM roof sealant option that works really well. This product is available in four different colors: black, white, clear, and gray. Whether you have a white or black EPDM roof, you can choose a shade of this roof sealant that matches the aesthetics of your roof.
The best part? You can get it in different sizes depending on your project. For small repairs, a pint works fine, but for bigger jobs, they offer a huge 2.5-gallon container that'll save you some money.
Product Highlights
👉 Stops leaks right away.
👉 Works on almost any surface (seriously, on everything!).
👉 Holds up against harsh weather.
👉 Mildew and chemical resistant.
#3 Henry® Lap Sealant
Henry® Lap Sealant is a go-to white EPDM roof sealant (though it comes in black, too). It's like rubber in a tube and works great for sealing edges and minor repair work.
Product Features
👉 One tube covers about 22 feet.
👉 Stays flexible for years.
👉 Works on both EPDM and TPO roofs.
👉 Durable in all weather conditions.
#4 NovaPatch Fiber Reinforced Mastic
This product is a good choice if you are looking for a versatile EPDM-compatible roof sealant. NovaPatch Fiber Reinforced Mastic is a great sealant for your roofing needs. This professional-grade waterproof sealant is made with 100% silicone rubber and reinforced with fibers, making it extremely durable for both emergency and long-term repairs.
You can apply this EPDM roofing sealant in a wide range of temperatures, from as low as negative 20 degrees all the way up to 160 degrees, and once cured, it can withstand even more extreme temperatures (negative 40 degrees to 400 degrees). This sealant is especially useful for repairing various roofing areas, including drain bowls, around equipment, and rough spots on your roof.
Product Features
👉 Rain-safe within one hour.
👉 Solvent-free formula and VOC compliant.
👉 Resistant to ponding water.
👉 5-year limited warranty.
👉 UV resistant.
👉 Excellent adhesion and hang.
👉 Can be applied on vertical or flat surfaces.
#5 Millennium EPDM Edge Sealant
Last but not least, this EPDM roof sealant works really well for the edges and seams of your roof. The Millennium EPDM Edge Sealant is specially designed to properly seal the exposed edges of an EPDM membrane, T-joints, and various flashing details on your roof. This specialized EPDM rubber roof sealant comes with a patented feathering tip for precise application.
Product Features
👉 Low VOC formula.
👉 High solids content (80%).
👉 UV light resistant.
👉 No sag or flow formula.
👉 24-month shelf life.
👉 Perfect for edge sealing.
Just remember that your roof surface needs to be clean and dry before application, and you should allow newly installed membrane seams to age for at least two hours before applying this sealant.
Also Read, EPDM Roof Repair: Common Issues and How to Fix Them Quickly
Call McClellands Contracting and Roofing, LLC For Professional EPDM Roof Services In Pennsylvania
At McClellands Contracting and Roofing,LLC we aim to provide reliable EPDM roofing services in Pittsburgh and the surrounding areas in Pennsylvania. Whether you are looking for repairs or a complete roof replacement, we've got you covered. We have a team of experienced professionals who have expertise and knowledge of various types of roofs including EPDM.
Our dedication to quality workmanship and customer satisfaction has made us a trusted name in the roofing industry. To discuss your project requirements or to get a custom quote, call us today at (412) 353-5660.
Frequently Asked Questions
While EPDM roofs are durable, they still require regular maintenance. It's recommended to assess your roof’s condition at least twice a year, especially before the harsh winter and summer seasons. If you notice any potential signs of wear and tear, such as cracks or blisters, it's time to apply a sealant.
Yes, many EPDM roof sealants are designed for DIY applications. However, as we mentioned in this blog post, it's advisable to hire a professional roofer for larger or more complex roofing projects. They have the expertise and tools to ensure a proper and long-lasting seal.
The ideal time to seal your EPDM roof is during dry, mild weather conditions. Avoid sealing your roof in extreme heat or cold, as these conditions can affect the sealant's performance.
The lifespan of an EPDM roof sealant can vary depending on factors like weather conditions, the quality of the product, and the specific application. However, with proper application and regular maintenance, a high-quality sealant can last several years.
It's generally not recommended to paint over EPDM roof sealant. Paint can interfere with the sealant's ability to protect your roof. If you need to change the appearance of your roof, consider using a colored roofing coating specifically designed for EPDM.
Always keep proper safety essentials with you, such as gloves, safety glasses, and a mask. Work in a well-ventilated area to avoid inhaling fumes. Follow the manufacturer's safety guidelines to minimize risks.
