10 Best Roof Sealant For Leaks Reviews 2021 [Buying Guide]

Looking for an option to extend your roof lifespan? Or maybe you are worried about rough weather? Either way, you need the best roof sealant to increase durability and reduce the risk of roof leakage.

For making your tasks easy and smooth, we have researched and analyzed hundreds of choices available in the market and handpicked top 10 of them. This guide also accommodates the buyer’s guide for the best roof coating, how can you apply them and many more! So, keep reading-






HENRY HE587372 Roof Coating

Coverage: 1 Gal/100 Sq Ft

Color: White

Cure Time: 24-48 Hours

Best For Flat Roof

Liquid Rubber Color Waterproof Sealant

Coverage: 1 Gal/30 Sq Ft

Color: 7 Color Options

Cure Time: 48-72 Hours

Best For Preventing Leaks

Heng’s Rubber Roof Coating – 1 Gallon

Coverage: 1 Gal/15 Sq Ft

Color: White

Cure Time: 24-48 Hours

Best For RV

Brief About Roof Sealant

Roof Sealant, aka Roof coating is a sealing material generally made of polyurethane, rubber, silicone or acrylic to apply on the different roof surfaces. These are great options to extend lifespan, reduce heat and cold caused damage to the roof and saving energy.

Generally, coatings that have high elongation are best for using on the roof for their high flexibility. Roof coatings can be used on new roof surfaces for enhanced durability, and old roofs for restoration.

best roof sealant for leaks in shinglesbest roof sealant for flat roof

Our 10 Best Roof Sealant Reviews:

Here is our list of the top 10 roof sealing products that you can use to seal the any kind of roof-

1. Tuff Guard Heat Block White Reflective Roof Coating

Looking for a roof sealant that is high quality, easy to use, and eco-friendly? Then, this 5-gallon water-based roof coat is the best bet for you.

This rubberized roof sealant is made without any solvent to make it environment friendly. Because of the rubberized components, it can withstand both heat and cold, allowing your roof to stay strong for a long period.

It’s 90 percent solar reflectivity ensures comfortable temperature under the roof and saves a decent amount of energy over the year.

A great advantage of having this product is its ease of application. You can use sprayer, brush, or a roller to apply this sealant. However, you need a bit of preparation like wearing gloves and masks to protect yourself from the fume.

This industrial grade roof sealant is an all-purpose product allowing you to apply this wherever you want. Whether you want the best roof sealant for metal, RV, flat roof, or even a concrete surface, this will cover you.

This weather-resistant roof sealant provides value for money too! You can easily apply a coat on 100 square feet of your roof with a gallon of it. So, this 5-gallon bucket can seal around 200-300 square feet of your roof as it needs two to three heavy coats for a perfect seal.

Key Features

  • Heat and cold proof roof coat
  • Easy to apply
  • 90% of solar reflectivity for energy saving
  • All-purpose roof coat works on versatile roof materials
  • Industrial Grade and eco-friendly
  • Provides value for money
  • Comes only in white color

2. Liquid Rubber Color Waterproof Sealant: Best Roof Sealant For Leaks

Liquid Rubber is a top brand when it comes to flexible roof sealants. With its seven color options and paint like application, this is one of the best roof coatings for flat and vertical roof surfaces.

Like the first one we have reviewed, this can also be applied easily with a paint sprayer, brush or roller. If you need to apply on a large flat surface, you can pour a bucket of coating and use a large squeegee to spread throughout the surface. And a great thing! You can save any leftovers for future use.

Since this is a water based sealant made without solvent or VOC materials, this is friendly to the environment and will not harm you or your pets. For this, you can consider this for applying both indoor and outdoor without thinking about safety. This is a great sealant for applying on fish ponds too.

When it comes to roofing maintenance or restoration, this product is a great option to go with. It can seal the surface and extend the lifespan of the roof saving thousands of bucks.

This freeze and heat protective rubber sealant becomes ready for another top coat within 12 hours and fully cures within 48 hours of application. A fast drying product yet can’t use on the same day.

This water and heat proof sealant ensure breathability allowing the moisture to pass through it.

You can seal 25 square feet of roof surface with a gallon of this heavy duty roof coating.

Key Features

  • 7 Color options
  • All purpose roof coating
  • Great for roof maintenance and restoration
  • Can be applied both on vertical and horizontal surfaces
  • Easy application with painting gears
  • Cures within 24 to 48 hours
  • Water based roof sealant, safe for human and pets
  • Flexible, water and heat resistant

3. Heng’s Rubber Roof Coating: Best RV Roof Sealant

If you are looking for the best roof coating for RV, this is the product we recommend for you. This is a non-toxic roof sealant making it safe for the environment.

Since it is very flexible and can expand and contract for the temperature fluctuations, it does not crack and degrade by the time for weather. So, this is a weather resistant product.

A great feature of this coat is its UV resistance. Your RV roof will be safe from harmful ultra violet rays of the sun when applied perfectly.

Apart from using on top of the RV, you can use this cost effective sealant to seal your metal roof surface. And if you have a previously coated roof that needs new coats, you can use this product to seal that too after proper cleaning of the surface.

Talking about the durability, this is made to withstand high heat and freezing temperature making it one of the most durable RV roof sealants available in the market. Plus, it cures a bright white coating which allows the heat to reflect making the interior more comfortable.

Key Features

  • Best rv roof sealant
  • UV resistant coating
  • Flexible, expands and contracts for durability
  • Not toxic, safe for the environment
  • Reflects heat to the atmosphere

4. Rubberseal Liquid Rubber: Best Rubber Roof Coating

Rubberseal is a prominent brand when it comes to the best rubber roof coatings. This product offers versatile size and color options allowing you to choose the exact color matching with your home and the size you require to seal the surface.

A gallon of this can seal 60 square feet of your roof effectively. For its aging resistant formula along with the UV protection technology, this becomes one of the most durable roof sealant money can buy right now.

It is made with Low VOC materials and is protective against harmful chemicals. So, this is a great option for roofs that are exposed to different chemicals.

Since this reflects heat quite well, it is energy efficient and thus, we can categorize it as eco-friendly.

This waterproof rubber sealing material is made with puncture resistant formula that ensures high-quality bond. Therefore, once you have sealed the roof with this product, you are relieved of all worries related to your roof durability for several years.

Key Features

  • Four color and different size options
  • 60 square feet per gallon coverage
  • Aging and water resistant
  • Reflects heat to save energy
  • Puncture and chemical resistant
  • Waterproof and eco-friendly roof coating at lower price

5. EternaBond RSW-6-50 RoofSeal Sealant Tape: Best Sealant For Roof Leaks

This product from EternaBond is a bit unorthodox from the other roof coatings we have reviewed until now. It is an adhesive tape that is made to seal the roof permanently to prevent damage by heat, cold and other weather conditions.

It is a high-quality rubber made sealant with built-in primer making it one of the top contenders for this guide.

Since this has high elongation, it is great to use in a sunny environment. This can expand and contract depending on the temperature allowing the surface to breathe and remain unharmed.

It is easy to install. All credit goes to the manufacturer who made this with highly adhesive material. Its silicone lining ensures that it does not stick to the surface you have not intended it to stick.

This UV and heat resistant coating product is durable thus protects your roof from being damaged for quite a long time.

Plus, you can use this for roof repair as well when you see tiny cracks or leaks appearing on the roof.

Key Features

  • Best silicone roof coating
  • Highly adhesive and Easy to install
  • High elongation sealant
  • UV and heat resistant formula, great for preventing leaks
  • Reflects heat to the atmosphere

6. HENRY HE587372 Dura Bright: Best Flat Roof Coating

When it comes to authentic roof sealing products, HENRY always comes at the top of the list. This 5-gallon pack from Henry is the best elastomeric roof coating that cures bright white color for high reflectivity.

It reflects sun heat by around 90% and reduces the roof temperature by around 40 degrees Fahrenheit. So, you need less energy to make your interior comfortable when the roof is sealed with this.

It is a durable roof sealant that does not need any primer before application. You only need the bucket of the HENRY roof coat, and you are good to go. Use a paint brush, roller, or sprayer for a perfect application.

It is made with high-quality resins and pigments that ensure durability. You won’t see even a small crack after applying this specially formulated rubber coating. Therefore, you don’t need to worry about cracking the sealant because of the temperature fluctuations. This can expand and contract with the fluctuation and is breathable too. So, there is no chance of moisture getting stuck underneath the coat and harming the roof.

A gallon of the best elastomeric roof coating can seal 100 square feet of your roof. You need around two to three coats of it to ensure a perfect and durable bond.

Key Features

  • Easy to apply elastomeric roof coat
  • The highly reflective coating ensures energy efficiency
  • Durable coat extends roof lifespan
  • Handles temperature fluctuation quite well
  • Stops roof leak if you have any
  • No primer, no crack roof sealant

7. Jetcoat Cool King: Best Sealant For Metal Roof

Jetcoat has been in the industry for around half a century now and they have a firm grip on roof sealant sales.

The manufacturer guarantees 5 years of tension-free roof protection with this acrylic roof coating that dries white. White color reflects the heat better than other colors and that’s why almost all the companies prefer this color to make their sealants.

This is an all-purpose roof sealant that can be applied on almost all types of surfaces except gravel, flat and asphalt shingled roof. So, check your roof type and decide.

A gallon of this can effectively coat 50-70 square feet of the surfaces at once. And you need two coats of them for a perfect seal. So, you can completely seal around 25 to 35 square feet per gallon of this elastomeric roof sealant.

If you are concern about the drying time, this is a fast drying roof coating that dries within two or three hours after single coat and becomes ready to accept another coat within 8 hours.

Because of its material and reflectiveness, this acrylic product makes your roof cooler than normal and ensures comfort in your interior.

Key Features

  • 5-year tension free roof protection
  • Dries white for better reflectivity
  • Can be applied in all surfaces except gravel, flat and asphalt shingled roof
  • 25 to 35 square feet per gallon coverage
  • Energy efficient and heat resistant due to high solar reflectivity

8. Dicor RP-CRC-1 Rubber Roof Acrylic Coating

Dicor is a popular brand for some mind blowing rv roofing products. This product from DICOR is one of the best RV roof coating available in the market for its high-quality bond and durability.

It is flexible, thanks to its rubber material. For flexibility, it will withstand scorching sun heat and freezing temperature without cracking. This is only possible for the expansion and contraction behavior of the coat after curing.

This acrylic roof sealant is easy to apply with an ordinary paint brush, painting roller or a high-pressure paint sprayer. If you have any of these, you do not need to spend extra money on applying it.

As it dries bright white, it enhances the beauty of the RV and reflects heat and UV rays to its source for maintaining temperature balance in the interior. Therefore, this falls under the harmful weather resistant category.

A great advantage of having this Dicor product is its low maintenance hungriness. You get a sound sleep for years after applying this on your roof.

Key Features

  • Best RV roof sealant
  • Flexible coating
  • Easy to apply UV stable coating
  • Requires low maintenance
  • Ultra violet and heat protection

9. Proguard F99911 Liquid Sealants For Roof

If you are looking for a sealant that can effectively seal flat, galvanized metal surfaces, and RV roof, this one from ProGuard must come at the top of your list.

This great rv roof sealant is made of 100% EPDM (ethylene propylene diene monomer) rubber ensures durability and flexibility. To give you a hint of the durability, it comes with 5 years of warranty!

Talking about flexibility, because of the build material, it expands and contracts well with the temperature fluctuations making it one of the most weather resistant sealant out in the market.

When it comes to heat and cold absorbance, this one is a product that can endure minus 60 degrees to 300 degrees Fahrenheit of temperature.

A gallon of this white rubber sealant effectively seals 42 square feet of the old roof surface.

Key Features

  • Great RV roof sealant
  • 100% EPDM rubber made
  • Stays Flexible and long lasting
  • 5 years warranty
  • -60 to 300 degree F temperature endurance

10. MasterSeal 583: Best Roof Coating for Ponding Water

If you are looking for a roof sealant for your concrete roof, this model from the MasterSeal is recommended for you.

This made in America product seals concrete surfaces to ensure a leakproof coat. It is a cement based heavy sealing material that is made for use on concrete. You can use this to seal the newly built roof or restoring or repairing the old roof. This will work effectively on both occasions.

Because of the material it is made with, it bonds harder than the roof itself. So, it will extend the lifespan of your roof with minimal effort.

As we talk about the high-quality seal, this protects water or moisture to go through it preventing any possible water leaks on the surface.

If you are worried about heat, this is a heat resistant product. So, it will not degrade in ordinary summer or winter temperature.

The coating perfectly bonds to the roof cement making strong seal that protects the roof for years to come.

Key Features

  • Hard bonding than wall
  • Made in the USA
  • Great for concrete roofing material
  • Heavy cement based waterproof coating
  • Excellent protection against heat and cold
  • Versatile option, can adhere to different surfaces

Best Roof Sealant For Leaks in Metal, RV, Shingles Buying Guide

When purchasing any product, whether it is for your interior or outdoor, it is necessary to know the procedure to pick the perfect one from thousands of choices. To make your task easy and smooth, we are sharing with you the exact method by which we have picked the most authentic roof coatings for this guide-

1. Heat and Cold Resistant

The main problem that causes your roof degradation is the continuous fluctuation of temperature. So, for protecting the roof and enhance the durability, you must pick a sealant product that can withstand both hot and cold temperatures.

There are some great roof sealants that withstand minus 60 degrees to a whopping 300 degrees Fahrenheit. When purchasing a product, you should pick one that has a higher range of harsh weather conditions protection.

2. Ease of Application

When applying sealants, no one likes to hire handymen spending money. To save money, you need to check whether the coating can be easily applied.

Most of the roof coatings can be applied with painting gears like a paint brush, roller, and paint sprayer. But it is better to check before purchasing rather than regretting later. For your information, all the products we have reviewed in this exhaustive guide are easy to apply. So, you can easily pick one from our top 10 list.

3. Roof Sealant Material

The material is another big thing that must be checked before purchasing. Since there are different types of materials used for manufacturing different roof coatings, you should check whether the material can adhere to your surface and make a solution to your problem. We have described roof coating material types in detail below. Check that for more information.

If you want to save time, here is a trick to skip this option. Just the read the label of the product and you can easily find out where can you apply this and where not.

4. Higher Reflectivity

Higher reflectivity means higher energy saving. As you know that the high the outside temperature is, the more it costs to make the room comfortable with air conditioner.

Roof coats that reflect heat from the surface save energy. As it will maintain low heat on the roof surface and eventually less energy to make your room comfortable.

5. Breathablility

Roof sealants are made for waterproofing the surface. For waterproofing features, the material must bond perfectly without allowing water to sip through it. But that causes a great problem!

If the moisture that is generated under the coat can’t be vaporized, it eventually degrades the roof. For protecting the roof from stuck moisture, the coat must be breathable. That means, although it is waterproof, it allows the vapor to go through it.

6. Roof Sealant Price

Price is a big concern for every purchase decision. But when it comes to roof sealant, pricing is a bit tricky. You will see a company selling a gallon in a hundred bucks where the other company in half the price.

You need to check how much surface a gallon of roof coating can effectively seal. The product label should give you a hint about that. Check that and calculate. For example, if a gallon can be applied on 50 square feet per coat. And you need 3 coats for a perfect finish, you need 3 gallons of the product to cover 50 square feet.

On the other hand, if a product can do the job in 2 coats but costs exactly the same, the second product will be more effective than the first one. So, don’t always go with the cheap roof coats. Most of the time, these are the least effective.

7. Roof Coating Durability

The durability of the roof coat is another thing you need to check. An authentic product should give you a minimum of 5 years of sound sleep. Some of the products even come up with a warranty also.

So, check whether the product can withstand all the outside abuses for years to come. Durable products are a bit expensive than the other but they are the most cost efficient than cheap products.

8. Eco-Friendliness

Since the roof coatings are made with different chemicals, the chance of getting a toxic and high VOC product is very high, especially when you are going with cheap products.

So, ensure that the product you are choosing is not harmful to the environment as well as to humans and your pets.

9. Flexibility

Flexibility is the last and final thing we check in a roof sealant material. If the material you choose is not flexible, it will eventually crack. It will happen because of the temperature fluctuations we have talked about above. If the product is cracked, it will lose its strength and eventually do more harm than good to your roof.

Types of Roof Coatings

There are different types of coatings available in the market and among them, only a few are popularly used in the roofs. Let’s check them out-

1. Acrylic Roof Sealant

Acrylic roof coverings are water-based sealant products that prevent UV rays better. They are highly reflective for their bright white colors. You can apply additional color on them to match things with your home. They are weather-resistant and durable. But the quality is not consistent as manufacturers use different types of addons with them.

2. Polyurethane

Polyurethane roofing sealants are made with solvent formulas and come in two different types. Those are-

a. Aromatic – These are great options for roofs that exposed to human traffic a lot for their higher durability against friction and damage. But they are not much protective against UV rays and heat. So, hot weather is the enemy of aromatic type sealants.

b. Aliphatic – On the other hand, aliphatic polyurethane roof coatings are protective against heat and UV rays. But they are not great for human traffic.

3. Silicone Roof Sealant

Silicone is a common material when it comes to sealing materials, whether it is a roof or shower sealant. These are highly flexible, waterproof and protective against harmful UV light and heat. So, great for areas that are prone to constant weather changes. You will not need to worry about your roof after you apply the best silicone roof coating.

4. Rubber Roof Coating

Rubber is another great material that is popularly used on the roof. These are extreme weather-resistant, energy-efficient, waterproof and very durable. Since these are materials come from nature, trees to be exact, these are eco-friendly options for sealing the roof.

5. Sealant Tape

This is not a type of coating, but we have added this to the list for a reason. There are a lot of unique coating products are made like tape. They come in tape form and can be applied with ease.

Since these are modern inventions and made with high-quality sealing materials, these are great for repairing the roof. Because these come in tape form, you can not make things smooth with these.

So, the roof will look ugly after application. So, not so good for applying to a new roof. But a great option for repairing a leaky roof or a potion of it.

6. Asphalt Coating

Asphalt coating is good for applying on uneven surfaces. These do not adhere perfectly to the smooth slippery surface and thus you can’t use these on metal or RV. But for concrete or gravel, this material is a good option. The main drawback of asphalt is the ugly color and bad odor.

benefits of using roof sealant

Benefits of Using Roof Coating

There are a ton of benefits of using roof sealants. Here are some of them-

1. Makes the Roof Water Resistant

When you apply the roofing sealant on the roof, it will become water-resistant. So, if you have small leaks or small gaps in the roof by which water sips through, a good roof coat will permanently seal the leak or gap make it waterproof.

2. Protects Roof from Damaging by UV rays

UV rays are a big concern for the world. As long as we have options to protect our home from heat and UV, we should go with it. Most of the roof coating products reflect UV rays and heat to protect the roof from overheating and being damaged.

3. Prevent Molds from Growing

Mold and mildew is a great concern for the homeowners. From the bathroom to the workbench, reading room to roof, they are everywhere when you do not prevent them. Roof coats are a great option to prevent mold from growing on the roof for their chemical substances.

4. Saves Energy

As the roof sealants reflect heat and prevent the roof from overheating, you will need less energy to make the home interior comfortable.

5. Extends the Lifespan of Roof

The most important benefit! Roof coating extends lifespan of the roof. Depending on the quality of the material and weather conditions of your area, a roof coat can extend the lifespan of your roof up to 10 long years.

How to Apply The Best Roof Coating

Applying roof coating is easy. Follow these steps to do it yourself-

1. Clean the Surface

Before you open the pack of your coating, make sure you clean the surface thoroughly. Remove everything that is on the surface. Use your hands to remove big chunks of dust and use a vacuum cleaner to remove any dirt. You will need a pressure washer for removing any grease or oily material attached to the roof.

Don’t skip the surface preparation step ever when it comes to roof patching or sealing.

2. Apply the Sealant

If you need to apply the roof sealant on a large surface, pour the whole bucket on the surface. Now use a long-handled squeegee to spread them throughout the surface evenly.

If you have a paintbrush, paint roller, or paint sprayer, make good use of them to apply roof sealants.

3. Allow the Roof to Cure

After you are done with the application, you now need to allow the surface to cure for a definite time. Exact time should be mentioned in the product label, so don’t forget to check that.

Generally, it requires 6-8 hours to cure the sealant and ready for accepting another coat. You should apply an exact number of coats that are prescribed by the product manufacturer for a perfect result. However, for full cure, it may take a few days.

4. Do not apply on Wet Surface

When applying the roof sealant, make sure you see the weather forecast. Roof sealants must be applied in good weather conditions. Generally, wet surfaces, scorching heat and freezing temperatures must be avoided for better bonding.

Want a visual and detailed application guideline? Check our guide on how to apply elastomeric roof coating.

Read Also: Best Drywall Stilts

FAQ on the Best Roof Sealant For Shingles

1. How Much Sealant do You Need for Your Roof?

This depends on the product you choose. Different products are made with different formulas and the amount you need varies from model to model. So, check the product label for correct measurement.

2. How Much Does it Cost to Seal a Roof?

This also depends on the product you choose and the surface you need to cover. However, If you do it yourself, then you will end up saving a lot of money. For example, contractors take almost the same amount of money that you spend on products. So, if you need 500 bucks of sealants, then you will end up saving $500 by applying the sealant by yourself.

3. Do Roof Coating Works or stop leaks?

Yes, roof coatings are waterproof and seal off any gap on the surface. So, you should experience a leak-proof experience.

4. How to Waterproof a Roof?

Easy answer! By applying weather resistant roof sealant, you can easily make your roof waterproof, heatproof, and energy saving.

5. What is The Best Roof Coating for Flat Roofs?

Acrylic, rubber and silicone coatings are great to seal flat roof surfaces. So, you can get any products that are made with these materials.

Our best pick is a great product when it comes to roof coating for flat roofs as it is an all-purpose product.

2 thoughts on “10 Best Roof Sealant For Leaks Reviews 2021 [Buying Guide]”

  1. Thank you for the exceptional and difficult work to do the analysis and write such a clear report.

    I am looking for products to go on the seams and edges of my sunroom roof, which 20+ years old. It is comprised of eight 12′ x 4′ x 4″ panels. The seams were sealed with tape but are now leaking.

    Which of these products could I use to do it myself. I am 65 and not up for huffing and puffing.

    My regular shingle roof also has leaks. It is black and about 12 years old. We live in Jacksonville FL so we get a lot of sun that shortens roof life.



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