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Best RV Roof Sealants – Top 5 Rated In 2021 Reviews

Is the roof of your RV starting to become old and worn? The roof is constantly exposed to harsh elements such as the rain, wind, and UV rays. These elements can quickly cause your RV roof to deteriorate, which can lead to cracking and leaking.

So what’s the solution?

You can fix this issue quickly and conveniently when you have one of the best RV roof sealants currently on the market. As the name suggests, this product has been created especially for RV roofs to fix cracks and leaks.

Let’s take a closer look at the most popular products around and find the perfect option for your RV…

Top 5 Best RV Roof Sealants To Consider In 2021 Review

  1. Dicor 501LSW-1 Self-Leveling Lap Sealant – Best Value for the Money RV Roof Sealant
  2. ToughGrade Self-Leveling RV Lap Sealant for Camper Motorhome Rubber Roof – Best Budget RV Roof Sealant
  3. Geocel 28127V Pro Flex Bright White RV Flexible Sealant – Best Cheap RV Roof Sealant
  4. Dicor 551LSW-12 White Non-Sag Roof Lap Sealant – Best Rated RV Roof Sealant
  5. Heng’s 95502 White NuFlex #311 Sealant – Best Roof Sealant for RVs

1 Dicor 501LSW-1 Self-Leveling Lap Sealant – Best Value for the Money RV Roof Sealant

Let’s start by looking at one of the easiest products to use you can buy. The Dicor 501LSW-1 Self-Leveling Lap Sealant promises to be ideal for a wide range of different types of horizontal surfaces. This product goes on smoothly, while the effects are especially long-lasting.

Sticking to it…

One of the great things about this product is that it is designed to adhere to a wide range of materials. This includes vents, screw heads, and the edges of the roof. This helps to ensure that this product will be suitable for all parts of your RV roof.

In fact, the range of applications for this product is almost limitless. It sticks well to fiberglass, galvanized metal, aluminum, wood, vinyl, and much more. This helps to make sure that it is suitable for all types of RV roofs as well as other parts.

What’s more?

This product is even compatible with TPO and EPDM sheeting. It boasts a white color, which blends well into most RV roofs. After application, your roof will be fully waterproof in as little as four hours.

The only real cause for complaint is that the tube that this product comes in is rather small. You are likely to find that a single tube will not be sufficient to cover the entire roof of your RV. Fortunately, you are provided with four tubes of RV roof sealant when you choose this product.

Dicor 501LSW-1 Self-Leveling Lap Sealant

Our rating:4.8 out of 5 stars (4.8 / 5)


  • Pack of four.
  • UV stabilized.
  • Adheres to aluminum, mortar, wood, vinyl, galvanized metal, and concrete.
  • Available in a range of colors.
  • Creates a watertight seal.


  • The tubes are rather small.

2 ToughGrade Self-Leveling RV Lap Sealant for Camper Motorhome Rubber Roof – Best Budget RV Roof Sealant

If you have a rubber roof, finding the right RV roof sealant can be tricky. Most products are designed to work with fiberglass roofs. However, this will not be an issue when you choose the ToughGrade Self-Leveling RV Lap Sealant for Camper Motorhome Rubber Roof.

A real tough customer…

As the name suggests, this product has been specially designed for rubber roofs. It boasts a UV-stabilized formula that prevents leaks while also resisting further sun damage and discoloration. As a result, you are sure to find that it remains intact for many years to come.

This model boasts a self-leveling effect to ensure that it is smoothed evenly over horizontal surfaces. This effectively seals up cracked surfaces in order to prevent leaks. Even during heavy rainstorms, the interior of your RV will remain as dry as a bone.

In addition…

This product can be used to seal air vents, vent pipes, and other areas of your RV. In addition to rubber, it is compatible with concrete, vinyl, aluminum, and even wood. In the winter months, you will not have to worry about the sealant freezing.

This product is designed to be ideal for horizontal surfaces such as RV roofs. However, you are likely to find that it tends to drip if applied to vertical surfaces. Not only will this look unsightly, but it will also take extra time and trouble to clean up.

ToughGrade Self-Leveling RV Lap Sealant for Camper Motorhome Rubber Roof

Our rating:4.4 out of 5 stars (4.4 / 5)


  • Pack of four.
  • UV-stabilized to prevent deterioration and discoloration.
  • Suitable for various RV areas.
  • Ideal for rubber RV roofs.
  • Very easy to use.


  • Not ideal for vertical application.

3 Geocel 28127V Pro Flex Bright White RV Flexible Sealant – Best Cheap RV Roof Sealant

If your RV roof is white, dark-colored RV roof sealant will stand out like a sore thumb. Fortunately, this will not be an issue when you choose the Geocel 28127V Pro Flex Bright White RV Flexible Sealant. This clear and flexible product goes on smoothly and will not be too visible.

The flexibility of this product makes it especially versatile and easy to work with. It adheres well to a wide range of different types of materials and surfaces. It also stands up well to different weather conditions, especially frost and strong UV rays.

Going the distance…

As an added bonus, this product boasts a 25-year service life. This saves you from having to constantly check in on your roof and reapply the product. In fact, you are sure to find that a single application lasts for the duration of your RV adventures.

The Geocel 28127V Pro Flex Bright White RV Flexible Sealant proves that the best RV roof sealants don’t have to be expensive. It comes in a 10-ounce tube, which is sure to cover a lot of your RV roof. This product also comes as a pack of ten tubes, which is even more cost-effective.


You may find that the finish of this product is a bit slick and shiny. While this does not affect the performance in any way, it may diminish user satisfaction. Fortunately, you can paint over the RV roof sealant after application if you find that it stands out too much.

Geocel 28127V Pro Flex Bright White RV Flexible Sealant

Our rating:4.7 out of 5 stars (4.7 / 5)


  • UV and mildew resistant.
  • Clear and flexible.
  • Crack-resistant sealant.
  • 25 year service life.
  • Designed not to run.


  • Rather shiny finish.

4 Dicor 551LSW-12 White Non-Sag Roof Lap Sealant – Best Rated RV Roof Sealant

While many RV roof sealants work well, they tend to become hard when they dry. This means that they can crack, peel, and otherwise deteriorate over time. Fortunately, you can be sure that this will not be an issue when you choose the Dicor 551LSW-12 White Non-Sag Roof Lap Sealant.

This is a non-leveling sealant and is compatible with a wide range of different materials. You can even apply it to vertical surfaces without fear of the product dripping and making a mess. As a result, you will be able to apply it to almost every exterior area of your RV where the sealant is needed.

Keeping water at bay…

Once dry, this product forms a watertight seal that is especially strong and durable. It can even resist pooled water without concern. Like many other products of this type, it also helps to repel UV rays to prevent your roof from becoming damaged by the sun.

As an added bonus…

This product will not leave stains behind. Not only will the finish be smooth, but it will also be virtually undetectable. Even once it has fully cured, this RV roof sealant remains fairly flexible.

The only slight cause for complaint relates to the nozzle design of the sealant tube. The nozzle often leaks or distributes too much sealant during use. While not necessarily a deal breaker, it is something to be aware of before use.

Dicor 551LSW-12 White Non-Sag Roof Lap Sealant

Our rating:4.7 out of 5 stars (4.7 / 5)


  • Does not stain.
  • Creates a watertight seal.
  • Remains flexible when dry.
  • Compatible with various materials.
  • Cures quickly and evenly.


  • The bottle nozzle needs improvement.

5 Heng’s 95502 White NuFlex #311 Sealant – Best Roof Sealant for RVs

If you have never applied RV roof sealer before, the application process may give you pause for thought. It is essential to make sure that the sealant is applied smoothly and evenly. Otherwise, you are likely to be left with an unsightly mess that is difficult to remove or rectify.

Easy does it…

This will not be an issue when you choose Heng’s 95502 White NuFlex #311 Sealant. The application process has been designed to be as quick and easy as possible. The tube comes with a special nozzle that dispenses the perfect amount of sealant for application.

There is no need to use a primer before applying this sealant to the roof of your RV. It has been designed to adhere to virtually any type of surface. In addition to your roof, this includes skylights, roof vents, satellite antennas, and air conditioners.

An added bonus…

This product is designed to retain its flexibility after application. It can protect the roof of your RV from all types of weather conditions. As an added bonus, the white color of the sealant helps it to blend into the RV roof so that it goes unnoticed.

It is important to allow this product to fully cure before exposing it to water or excessive moisture. The curing process is likely to take at least two hours, depending on the surrounding temperatures. As a result, it is essential to apply the RV roof sealant on a sunny day or when the RV is parked under a shelter.

Heng's 95502 White NuFlex #311 Sealant

Our rating:4.9 out of 5 stars (4.9 / 5)


  • Remains permanently flexible after application.
  • No primer required.
  • Cures in two hours.
  • Easy to apply.
  • Suitable for use on various surfaces.


  • Not waterproof until cured.

Best RV Roof Sealants Buying Guide

Top Best RV Roof Sealants

When checking out the best roof sealants for RVs, you will want to find a product that lasts as long as possible. However, not all RV roof sealants are created equally. Keeping the following factors in mind will help to guide you towards the perfect product.


Once you have applied the sealant to your RV roof, you will want to ensure that it stays firstly in place. The durability of the product is generally based on tear resistance and elasticity.

Sealants that retain their elasticity after they have finished curing are especially durable. Tear resistance sealants are also sure to go the distance. They will be able to withstand a lot of impact without breaking or tearing.

Water Repellency

Make sure that the RV roof sealant is fully waterproof. Some models will stand up to light rain well, but become degraded when pooling occurs. This means that your roof could start to leak after a certain amount of time.

UV Resistance

The roof of your RV is constantly exposed to sunlight, which can cause it to peel and crack. Therefore, it is best to choose a product that can resist and even repel UV rays. This can help to considerably extend the lifespan of your RV roof.

Ease of Application

Some products can be rather tricky to apply, while others go on very smoothly and quickly. You should be able to apply the perfect product in a single coat without the need for a primer. It should also cure as quickly as possible so that you can get your RV adventure started without too much delay.

Size Matters

Make sure that you have enough sealant to cover the part of the roof that needs sealing. Top of the range products come in rather small tubes. You may find that you need more than one tube to get the job done.

First, you need to measure the length and width of your RV roof. You can work out the surface area of the roof by adding the two measurements together and dividing the result by 42. This will give you a rough estimate of the amount of sealant that you will need to fully cover your roof.

The Color

Last but not least, it is time to think about the color that you want your RV roof sealant to be. If you have a black rubber RV roof, white sealant may stand out too much, while black sealant can look unsightly on white roofs. Bear in mind that light and bright colors reflect more sunlight than dark colors.

What are the Different Types of RV Roof Sealants?

Top Best RV Roof Sealants Review

As you are likely to have noticed by now, there are several different types of RV roof sealants to choose from. The type that you choose will affect the ease of application and the overall performance. Let’s take a closer look at the main types of RV roof sealant.

Rubber Coating

This is one of the most common types of RV roof sealants, and it comes in two different forms. One is constructed from thermal poly Olefin, while the other form is constructed from ethylene propylene monomer. Each type needs to be maintained in a different way, so it is important to read the manufacturer’s manual carefully.

Acrylic Coating

This type of coating is ideal for people who are on a tight budget. It does a fairly good job of repelling UV rays and protecting your roof against leaks.

The downside is that you are likely to need to apply at least two coats of this product to provide lasting effects. In addition, an acrylic coating is not especially effective at handling ponding water. This can cause the coating to peel or become degraded over time, which can lead to leaks.

Silicone Coating

This special coating is usually sold by the gallon and is on the higher end of the price scale. However, the key advantage is that you only need to apply a single coat. There is no need for a primer, making the application process quicker and easier.

Silicone coating also boasts a high resistance to wind degradation and harsh weather conditions and is highly reflective. It has the ability to remain extremely elastic for a long time for enhanced durability. However, it is likely to become dirty fairly quickly and easily.

Liquid Coating

This type of sealant is naturally water-repellent, making it ideal for preventing corrosion. It is very easy to apply and simply needs to be brushed onto the roof of your RV. It offers enhanced protection against UV rays and can significantly prolong the lifespan of your RV.

Fiberglass Coating

This type of coating requires very little maintenance compared to many other options. However, this is not the most cost-effective option and can be rather tricky to apply. You will also find that it adds a bit of extra weight to the roof of your RV.

Urethane Coating

This type of coating is significantly more durable than acrylic and silicone coating. It is highly resistant to impact, helping to protect your roof if something falls onto it. Urethane coating is UV resistant, reflective, and able to resist ponding water.

However, this type of coating tends to come with a rather high price tag. It also tends to produce strong and unpleasant odors during the application process. This could be an issue if you are applying it in a small and enclosed area that is not well ventilated.

How to Apply RV Roof Sealants

Best RV Roof Sealants Review

Discovering the correct application process for RV roof sealant will save you a lot of time and trouble in the long run. Products that can be applied at room temperature will be easier to work with. Make sure that the roof of your RV is fully clean and dry so that the sealant sticks to it properly.


Make sure that you choose an area that is well ventilated to apply your sealant. It is important to bear in mind that the uncured RV roof sealant is flammable. Therefore, it is essential to remove ass sources of ignition from the area.

Too much sunlight and heat can slightly warp the roof of your RV. This will make the sealant coating uneven. If the surrounding temperature is too hot, you may find that the sealant starts to dry before you have completed the process.


It is a good idea to apply thin coats of acrylic or urethane RV roof sealant rather than one thick one. This will help the product work more effectively. Thinner coatings are also more likely to go on smoothly and evenly.

You can apply the sealant with a caulking gun or a paintbrush. For small areas around vents and skylights, you are likely to find that a paintbrush is easier to work with. If you are able to be accurate, a paint roller will help you to apply the sealant to large areas especially quickly.


After the application is complete, you should let the coating dry for around three hours. After this, you can apply one more coat if necessary. It will then take around 48 hours for the sealant to cure, after which you will be ready to hit the road.

How Much Does Roof Sealant Cost?

Top 8 Best RV Roof Sealants

The pricing of the roof sealant generally reflects the overall quality of the product and the quantity. A range of products are available for under $15. However, the size of the tube tends to be rather small.

Mid-range products typically cost $15-$40 and are generally good at getting the job done. However, if you are looking for a full roof coating kit, you can expect to pay at least $40. This product tends to be especially durable, as well as very easy to apply.

How to Remove RV Roof Sealants

The removable process will vary according to the type of RV sealant that you have used. However, you will generally find that it is a fairly quick and easy process. The manufacturer’s manual that comes with the product should come with a step by step removal guide.

Generally speaking, liquid sealants are easier to remove. This is mainly due to the fact that they do not dry hard. Even after the curing process, they remain pliable and can often be peeled away from the roof of your RV.


The best RV roof sealants allow the new sealant to be applied on top of them. They also provide a surface that paint will adhere to. This may save you the time and trouble of having to remove the RV roof sealant.

Looking for more superb products for your RV?

If so, then check out our reviews of the Best Tire Pressure Monitoring System, the Best RV Mattress Short Queen, the Best RV Bike Racks, the Best TV Antenna For RV, and the Best WiFi Booster For RV currently on the market.

Also, be sure to take a look at our Best RV GPS Devices Reviews, our Best RV Water Filter Reviews, our Best RV Battery Reviews, our Best TV For RV Reviews, and our reviews of the Best RV Tire Covers you can buy in 2021.

So, what are the Best RV Roof Sealants?

Our choice of the best roof sealants for RVs is the…

Dicor 501LSW-1 Self-Leveling Lap Sealant

In terms of versatility and ease of use, this product is really at the top of its class. You are able to apply it to a wide range of different materials without concern.

Not only does this product go on smoothly, but it also gets to work very quickly. It provides waterproofing effects in just four hours, while it fully cures in 48 hours. In addition to covering your RV roof, this product will also cover screw heads and other surfaces with ease.

Happy adventures!


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