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7 Best Roof Sealant Reviews in 2024

Whether you are dealing with a leaking roof, or want to prepare for the upcoming rainy season and add protection to your rooftop, buying an effective roof sealant is quite necessary. As there are so many good options to choose from in the market, we have already picked the best ones so that you can easily pick one for yourself. However, before you start to compare them and start finding them, there are a few things that you must consider checking:

  • Quantity: Roof sealants do come in a variety of sizes, so depending on the purpose you want it for, you can purchase the right pack for yourself. In case you just need a roof sealant to fix some cracks, you can go for a 1-gallon option. Otherwise, if you want to cover the whole rooftop, 5-gallon options are also available out there.
  • Type of Sealant: Roof sealants are of various types and they all serve a different purpose. However, the main purpose of a roof sealant is to provide waterproofing protection to prevent leakage, the rubber sealants are the best you can pick. On the other hand, even acrylic roof sealants offer good protection, so you can choose them as well.
  • Compatibility: It’s highly important to check whether the roof sealant you pick is compatible with your roof or not. Some sealants work good with flat roofs only, while some can be used with slanted roofs, and and even for sheds, and basements. Moreover, also check whether the sealant works for metal, wood, or concrete rooftops or not.

Other than these few things, there are several other factors that you can consider checking. In case you are interested to know about such factors, we have mentioned a simple and detailed Buying Guide” about roof sealants in this article below. So, you can refer to it and pick the best roof sealant option for yourself.

Best Roof Sealant 2024: Tabulation

Best Roof SealantSizeType of SealantWarrantyBuy Now
Flex Seal Liquid Roof Sealant0.125 GallonsRubber1 year longCheck On Amazon
Heng's Roof Sealant1 GallonRubber1 year longCheck On Amazon
L R Liquid Rubber Roof Sealant5 GallonsRubber1 year longCheck On Amazon
Dicor Roof Sealant1 GallonAcrylic5 year longCheck On Amazon
Liquid Rubber Roof Sealant1 GallonRubber1 year longCheck On Amazon
Rubberseal Roof Sealant1 GallonRubber1 year longCheck On Amazon
Henry Roof Sealant5 GallonsRubber10 year longCheck On Amazon

Best Roof Sealant Reviews

1. Flex Seal Liquid Roof Sealant

Flex Seal Liquid Rubber in a Can

Flex Seal is one of the best brands that you can pick in case you want a liquid rubber sealer for repairing your roof.

The Flex Seal Liquid Rubber comes in 16 Oz cans which is a good enough amount that you can use to repair multiple cracks and leakage areas on your rooftop. Since the texture of this liquid rubber sealant is quite viscous, you can simply brush, dip, roll, or pour it directly onto the surface.

Thanks to its effective sealing properties, it gives amazing protection against water which is good. Moreover, this liquid rubber is even UV-resistant and offers protection against rust and corrosion on whichever surface you apply it.

Best Features:

  • The total quantity of the can is 16 Oz
  • UV-resistant and Water-resistant
  • Offers protection against rust and corrosion
  • Comes with a 1 year long warranty


  • Easy to apply
  • Affordable
  • Covers fast


  • Quantity is very less

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2. Heng’s Roof Sealant

Heng's Rubber Roof Coating

For those who are looking for a roof coating sealant option for industrial use, Heng’s is one of the best brands that you can pick as it’s quite affordable.

This roof sealant is specially designed to be used over RV rubber roofs, and can effectively seal any tears, vents, and leakage in car air conditioners. Moreover, the special fact about this roof coating is that it is even UV-resistant.

With time, the coating doesn’t wear much and holds its resistance against cracking and impacts. In fact, it is made using non-polluting and non-toxic materials which is quite impressive. Speaking of quantity, this pack of Heng’s rubber roof coating comes in a 1-gallon can.

Best Features:

  • Total quantity is 1 Gallon
  • UV-resistant coating
  • Non-polluting solution
  • Comes with a 1-year warranty


  • Does not smell bad
  • Very fluid
  • Easy application


  • Shipping might take time

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3. L R Liquid Rubber Roof SealantL R Liquid Rubber Waterproof Sealant

Next on this list, you can also go with the brand, LR, as it’s one of the most popular ones and well-known for selling a variety of sealant options.

It works for almost all kinds of roofs such as Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, and even on materials like metal, wood, concrete, etc. Moreover, it is highly durable and flexible and doesn’t get affected by the UV rays either.

Since it’s a water-based sealant, no solvents are involved so it’s totally safe for the environment. Speaking of its coverage, this pack contains 5 gallons of sealant which should be good enough to easily cover a large rooftop area pretty easily.

Best Features:

  • Compatible with most roof types
  • Capacity is of 5 gallons
  • Flexible Seamless technology
  • Comes with a 1 year long warranty


  • Excellent resistance against UV rays
  • Highly flexible
  • Long Lasting and maintenance-free


  • Application process is long

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4. Dicor Roof Sealant

Dicor RPCRC1 White EPDM

Coming up next, we have a white rubber coating sealant offered by Dicor, which is yet another amazing brand choice as its products are both durable as well as affordable.

One of the most interesting parts about this roof sealant is that it comes in white color, hence, it doesn’t get warm quickly under sunlight and keeps your house cooler. Moreover, the solution has excellent flexing quality which allows it to spread on the roof pretty well and hold its elasticity for a long period of time.

Speaking of its size, this pack of roof sealant comes in 1 gallon can which is a good enough amount. In fact, it’s quite ideal if you are looking for a long-lasting sealant option for waterproofing your roof as it requires almost no maintenance, and effectively eliminates the roof rumbles. In addition, it also comes with a 1 year long warranty as well.

Best Features:

  • Acrylic-type roof sealant
  • Capacity is 1 gallon
  • Color of the coating is white
  • Comes with a 1 year long warranty


  • Highly flexible
  • Pricing is very adequate
  • Offers excellent waterproofing


  • Requires a part 1 pre-application coating

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5. Liquid Rubber Roof Sealant

Liquid Rubber Color Waterproof Sealant

Although we have already considered one good sealant option from Liquid Rubber on this list already, the brand has a wide range of roof sealants, and this one is quite popular if you are looking for a repairing solution.

The best part about this waterproof sealant from Liquid rubber is that it comes in a variety of colors. And, this sealant option that we are discussing here comes in a 1 gallon can and is of white color. It works for almost all kinds of roofs and materials including metal, concrete, and even wood.

Apart from that, it’s environment friendly too as it is water-based and can be easily applied on any surface. Although the application process of this sealant takes about a day or two, it’s highly effective and maintains its elasticity for years. In all, you can use this solution to add a waterproofing layer to any surface, that too very easily. Moreover, it also comes with a 1 year long warranty as well.

Best Features:

  • Compatible with metal, wood, and concrete also
  • Capacity is 1 gallon
  • Flexible Seamless technology
  • Comes with a 1 year long warranty


  • UV and chemical resistant
  • Durable and long lasting
  • Available in multiple color choices


  • Application process is long

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6. Rubberseal Roof Sealant

Rubberseal Liquid Rubber Waterproofing

Next on this list, we have a liquid rubber roof sealant option offered by Rubberseal which is pretty popular and well-known for its high-grade protective coating solutions.

Speaking of this liquid rubber coating sealant here, this comes in a 1 gallon pack and has a bright white color which you will definitely like to apply on your roof. The liquid rubber present in this pack is highly viscous so users don’t face any difficulties applying it on the roof. In fact, its ceramic and insulating properties are highly advantageous for rooftops and RV roofs as it reflects the harmful UV rays effectively.

On the other hand, it’s also EPA energy star rated and has a very long-lasting nature, which means that it barely requires any maintenance from your side. In addition to that, there are negligible amounts of chemicals used, and it’s safe for the environment. As far as the warranty is concerned, you get a 1-year warranty on this sealant offered by Rubberseal.

Best Features:

  • Comes in white color
  • Capacity is 1 gallons
  • EPA energy star rated
  • Comes with a 1-year warranty


  • Has good waterproofing properties
  • Excellent elongation
  • No maintenance is required


  • A little expensive

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7. Henry Roof Sealant

Henry HE587372 Roof Coating

If you are on a budget, Henry is one such brand that can provide you with large quantities of roof sealant for a very affordable price.

It’s simply one of the most affordable brands out there, yet its products are quite impressive as they perform as effectively as other options available in the market. For such competitive pricing, Henry offers you this 5-gallon pack of white rooftop sealant which is pretty easy and simple to apply.

Not just that, the sealant has excellent elastic properties and is designed to use on rolled roofing, built-up roofs, and metal roofs as well. That said, it is compatible with multiple materials and has good adhesive properties as well. Moreover, the best part about this sealant is that it reflects about 70% of the harmful UV rays that fall on the roof and effectively lowers the roof and interior temperatures. In addition, it comes with a 10-year warranty.

Best Features:

  • Ideal for rolled roofing, built-up roofs, and metal roofs
  • Capacity is 5 gallons
  • Mildew and Stain resistant
  • Comes with a 10 year long warranty


  • Excellent resistance against UV rays
  • Helps lower interior temperatures
  • Highly affordable


  • Does not work on wooden rooftops

Buy Now From Amazon

Buying Guide for the Best Roof Sealant

We definitely understand that you are concerned to add a protective layer to your rooftop for preventing leakage and similar other problems. Well, using a roof sealant is typically the best thing that you can try out doing.

However, finding the best roof sealant from the market isn’t that easy as there are a wide variety of options to choose from. With that said, we have come up with this simple buying guide about roof sealants that will help you pick a roof sealant that would work the best for you. So, we highly recommend reading this buying guide until the end.

1. Quantity

As you might already know, roof sealants come in a variety of sizes. While some people use roof sealants for repairing, some people like to use a sealant for protecting the rooftop. That being said, if you want to repair some small cracks or small patches on your rooftop, you can go with 1 gallon sealant options. However, if you are thinking of covering the entire rooftop, you will definitely need more than 1 gallon. Hence, there are plenty of options in our list that come in a 5 gallon pack which will definitely be the right pick for you.

2. Type of Sealant

You will come across multiple kinds of sealant options while going through this article, and even if you start your research from the market itself. No matter how many types of sealants you check out, for good waterproofing protection and repair purposes, there’s no better option available than a rubber sealant. In comparison to that, acrylic sealants are equally good in terms of providing protection. But, their lifespan is not as long as a rubber one, so there will be a frequent need for reapplication from time to time.

3. Base Material

While looking for the right sealant option, you must know that there are basically two kinds of sealants that are available in the market. There’s one type that is solvent-based and is known to be quite effective but comes for a price. On the other hand, there are water-based sealants that are easier to apply, but the level of protection they offer is slightly lesser than the latter and is more on the affordable side of the scale.

4. Reflectivity

As you are finding a sealant for your rooftop, you will notice that most of the roof sealant options out there are often advertised as UV-resistant. Well, basically what these sealants do is reflect away the harmful UV rays that fall on your rooftop. Without such protection added to the rooftop, your roof tends to absorb more UV rays, and eventually, the overall temperature inside the house rises. However, if you use a UV-resistant roof sealant, you will notice a significant change in the indoor temperatures.

5. Warranty

Lastly, yet another important detail that you must not forget to check is the warranty. It’s quite important that you buy a roof sealant from a reputable brand only because of several reasons. First of all, you won’t be wasting your time trying a product as popular brands do have a big customer base, so you can see how the product performed for the past customers in the reviews. Moreover, the popular brands do offer decent after-sales services and offer at least 1 year warranty period for the satisfaction of their customers.

Best Roof Sealant – FAQs

1. Is it advisable to apply roof sealant?

Ans: Yes, while sealant or coating is helpful, it’s not a substitute for regular roof maintenance or repairs. It’s recommended to have a professional roof inspection before applying any coating.

2. How many coats of roof sealant are usually recommended?

Ans: To enhance durability, most roof coating manufacturers recommend applying two coats, as a single coat may result in thin areas.

3. Is it possible to apply roof sealant using a rolling method?

Ans: Roller-Grade Silicone Roof Coating is intended to be applied with a roller, not sprayed, and can achieve over 70 wet mils in a single coat while maintaining the benefits of High Solids Silicone Roof Coating.

4. Which type of roof coating offers the longest durability?

Ans: Silicone roof coatings can last up to 20 years or more, and with proper maintenance, some may endure for 50 years or more.

5. How frequently should one consider resealing their roof?

Ans: It’s recommended to reseal your roof every five years for maintenance and to address issues like cracks or pooling water in a flat roof.


As you might have already noticed by now, there are plenty of good roof sealant options out there that you can try out. However, not all the roof sealant options are meant for everyone, so you have to pick the one that’s suitable for your purpose of use. Well, we have explained each and every roof sealant option mentioned in the list, so you can easily pick the right one for yourself. Yet, if you face any confusion, the buying guide is also there that you can refer to. Still, even if doesn’t help you much, here are our personal recommendations that you can try picking:

  • For quick repairs and effective results, we would recommend using the Flex Seal Liquid Roof Sealant as it comes within a 16 Oz can which is sufficient enough to treat cracks and tears on any surface. In fact, the sealant offers excellent waterproofing and is also UV-resistant as well. On top of it, you also get a 1 year warranty for it too.
  • On the other hand, you can also try out the Heng’s Roof Sealant, the 1-gallon pack which is available in the market for quite an affordable price. It offers you a great value for money, and is excellent in terms of waterproofing and providing protection against UV rays. Moreover, it’s highly recommended if you want to repair RV roofs, seal vents, air conditioners, etc. In addition, you also get a 1 year long warranty for it as well.
  • However, if you want a high-grade sealant option, the L R Liquid Rubber Roof Sealant is a water-based solution that perfectly works on multiple surfaces and works for both indoor and outdoor applications. Moreover, it’s easy to apply, and there are no harmful VOCs or odors involved in its solution. In fact, it also comes with a 1 year long warranty which is great.

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