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The Best RV Roof Sealant

Are you shopping around for the best RV roof sealant? This special type of roof sealant is what you need if you want to prevent leaks in your roof. It is also important to have on board to fix emergency leaks. The sealant is also versatile to use on many surfaces and for a wide range of applications that we’re highlighting later.

However, choosing from a wide range of products on the market isn’t easy because there are many of them available. For this reason, your friends at Smart RVing have come up with a shopping guide and a list of top picks to use as reference when comparing and finding the right sealant, tape or liquid, for your RV.

If you’re ready, keep reading and get your hands an easy to use, long-lasting and high-quality RV roof sealant today.

Table of Contents

Best RV Roof Sealants

1. Dicor 501LSW-1 Lap Sealant

  • Works well with EPDM sheeting
  • Protect RV roof from leaks
  • Remains flexible, won’t crack
  • Excellent adhesion to different materials, such as wood and concrete
  • Can seal vents, air conditioners and other materials needing water sealing
  • Won’t work vertically because it is self-leveling

You will need a rubber roof sealant if you want to prevent leaks in your recreational vehicle roof. By using the Dicor 501LSW, you don’t have to worry about leaks in your RV because this product can totally seal your roof.

The Dicor 501LSW can also protect your RV from the cruel weather. As you may know, your roof is the first one exposed to the harshest of outside elements, including wind, snow and rain. It will also be exposed to thawing and freezing. And such elements can lead to cracks if you don’t put a roof sealant on the roof.

With this product, you don’t have to worry about hefty spending on repairs. Nevertheless, it is a money saver that also helps in maintaining the function and good condition of your roof.

When looking for a good roof sealant, you should also find a product that can help in sealing around the vents, air conditioners and vent pipes aside from the roof’s edges. This product does all these plus sealing screw heads, keeping them watertight.

The Dicor 501LSW is also ideal for EPDM sheeting, so you can use it conveniently and safely for your RV roof. It is so versatile that it also offers perfect adhesion to mortar, aluminum, vinyl, concrete, galvanized metal and wood. With such plenty of uses, you can be sure that you’re getting the most out of your spending.

This product also remains flexible, so it won’t crack and is also easy to clean up. It is also compatible with all RV roof colors because it comes in a white color. This sealant also works perfectly to reflect the sun’s damaging UV rays because it is UV stabilized. That said you could ensure that it won’t deteriorate or discolor. The Dicor sealant is also safe to use because it won’t discolor or stain any material in your RV.

On a negative note, this product won’t work vertically because it is self-leveling.

2. 3M Marine Adhesive Sealant

  • Can work above and below the waterline
  • Long-lasting performance
  • Color stable sealing
  • One of the most versatile on the market
  • Available in sausage packs, drum volumes and cartridge
  • A bit pricey

This adhesive sealant is one of the best on the market we found. We would like to recommend this to RV owners looking for an effective and efficient sealant that won’t crack and stain an RV roof. It is also cost-effective because it does more than roof sealing. You can also use it for sealing vents, air conditioners and screw heads, among others.

It cures forming a flexible, firm and waterproof seal on many materials, including fiberglass, gel coat, aluminum and wood. It is ideal for different marine applications, either below or above the waterline. That is one thing we appreciate in this product.

With the firm and flexible waterproofing it can provide, you can have peace of mind that you don’t have to worry about leaks. You can also prevent energy loss because it can seal air conditioners, too. That’s top savings in the end. As it can also seal different materials from moisture and water, it can also help you prevent spending on repairs that would otherwise affect your budget.

It also has high endurance to keep up with different marine environments. The 3M Marine Adhesive Sealant 4000 UV is designed for long lasting and reliable performance. We love that it can provide the durability and strength that you can rely on when working on difficult and challenging applications.

Another thing we love about the sealant is its ultra strong bond to materials. It also has high durability against any harsh conditions. In addition, this ideal roof sealant can withstand shocks on common boats. It can also prevent shrinking, swelling and vibrations. Thus, if you’re looking for a superior product for a wide range of marine applications, you don’t have to look any further when you have the 3M Marine Adhesive Sealant 4000 UV with you.

On a negative note, this product is a bit pricey.

3. ToughGrade Self-Leveling Rubber Roof Sealant

  • US stabilization prevents discoloration and deterioration
  • Seals venting systems, air conditioners and screw heads
  • Available in sizes and packaging
  • Can be used on horizontal surface
  • Can cause skin and nose irritation

This self-leveling sealant is one of our highly recommended products on the market. It does work well in sealing roofs, air conditioners and venting systems, and other items needing rubber roof sealing.

It is ideal for many marine applications, boats and waterlines. You can rely on this motorhome, RV and camper roof sealant. It cures strongly to form a firm layer of moisture sealing on your roof. You can use it in sealing around vent covers and screw heads, too.

On the negative, it can cause skin and nose irritation to sensitive individuals.

This is a UV stabilized product that can prevent discoloration and deterioration. The sealant that can seal around air vents can also be used with any type of roofing material. You can also use it on galvanized metal, vinyl, wood, mortar, aluminum and concrete. You also don’t have to worry about discoloring or staining the material to which it is applied.

The product can protect your roof from harsh weather elements, including snow and rain. It can also deal with thawing and freezing. The product can also work well below and above waterlines.

Without even saying, it is a tough sealant that you can depend on for its wide range of applications. You can also save money for not having to buy separate products for each application or use.

Overall, it is a decent buy that RV owners select for its flexibility and durability that other products might not be able to provide them with.

On the downside, the product can cause nose and skin irritation.

4. Sashco Through Roof Sealant

  • Permanently prevents and stops leaks
  • Won’t crack and dry hard
  • Can last up to 20 times longer than traditional cures like asphalt
  • Seals around all type of roof fixtures
  • No messy asphalt look
  • Can have strong chemical smell

As you can read in RV roof sealer reviews, the Sashco Through roof sealant is an effective roof patching sealant and cement that works in all temperatures and types of weather. That’s one thing we appreciate about this product that makes it one of the top in our list.

If you’re looking to protect your RV roof and make its roof ultra watertight, you might want to take a look at this top performing product that does it well. It can save you from hefty repairs and maintenance expenses because it can keep moisture out for a long time. You don’t have to reapply it frequently and consume time doing so.

This RV roof sealant is also versatile enough for a wide range of applications, including on concrete, galvanized metal, asphalt, plastic and so many more. You can rely on it for different uses and applications, so you don’t have to spend on different products for each task.

You can also have peace of mind that the roof patching sealant won’t freeze. It can also deal with all types of weather and harsh outside elements. It can also work well in the winter. It can protect your recreational vehicle roof from leaks for a long time. Your family members’ heads will stay dry when you host parties.

This product can also expand and contract with changes in temperature, as it moves with your roof fixtures. This repair and maintenance roof sealant can stick well, but it won’t ever stick out and give that messy look.

This roof cement can adhere well to a wide range of materials, including stone, concrete, tiles, brick, plastic, polyurethane, stucco, mortar and wood and many more.

On the cons, it can have a chemical smell that might annoy some people.

5. Geocel 28100V Pro Flex Crystal Clear RV Flexible Sealant

  • Can be reapplied to a previous application
  • Easy to apply and works on many surfaces, including wood, steel, glass…
  • Crack resistant, UV-resistant and mildew-resistant
  • Quick repair and maintenance
  • Available in different colors
  • Might not work well on potable water installations, TPO and EPDM

The Geocel 28100V Pro Flex is versatile roof cement that works for a wide range of applications and uses in RV and marine environments. We also recommend this product for its manufacturer warranty. Another thing we appreciate about it can fit many models and make.

We also love that it’s clear to work well in our recreational vehicle. The product is also UV stabilized to prevent discoloration and deterioration. It can reflect UV rays well and adapts with all types of weather.

It also offers ease of application and convenience. The product is a breeze to apply and easy to clean up. If you make a mistake in the application, you don’t have to worry because it is a non-stringing product. You can easily clean it up for a mess-free and perfect application.

The Pro Flex is also perfect for many types of materials, including steel, fiberglass, vinyl and wood. It can also stick well on glass and aluminum. You can also have peace of mind that this liquid cement will work well even when applied in the rain and on damp surfaces. Plus, when it hardened, it won’t also crack or dry hard.

You can also choose a color, including, almond, white, clear and black, to name some. It is also versatile and convenient to use because you can apply paint on it once cured. It can also hold well even when applied on top of a previous application.

This product is also UV-resistant and mildew-resistant, so you can rely on its long-lasting effect.

On the downside, it might not work well on TPO, EPDM and potable water installations.

6. EternaBond RSW-4-50 RoofSeal Sealant Tape

  • Color stable sealing
  • Can be used in a wide range of applications
  • Sticks well on different materials
  • Durable and long-lasting performance
  • Does not give a messy asphalt look
  • A little bit pricey

The white sealant tape is one of the best caulking and sealing products for RV roofs. We recommend this product because it only needs minimal surface preparation prior to use.

You’ll also appreciate that the sealant can elongate well. It can move as your roof does for its flexibility that lets it contract and expand as needed. The reason is that it has a high elongation factor, which makes it excellent in contracting and expanding, while also sticking well when applied.

We also appreciate that it can work well even in hot temperatures. It is a breeze to use, so even first time users won’t have a hard time in applying it on a wide range of surfaces. Once cured, the product is mildew and UV resistant, allowing it to last longer than other products on the market do.

We also recommend the product because of its high UV resistance. It won’t crack even for a long time. And when cured, paint can be applied on top of it. You can also reapply it above itself without any hassles.

The product won’t also give a messy asphalt look that would otherwise ruin the look of your RV roof fixtures. You can also use it to seal around venting systems, screw heads and air conditioners in a breeze.

The roof cement also works well on many types of surfaces, so you don’t have to buy separate products for different applications. With such versatility, you can save money in the end. You also can have peace of mind of its long-lasting performance.

On a negative note, the product is a bit pricey.

7. Dicor BT-1834-1 Butyl Seal Tape

  • Works well even along unusual patterns
  • Installs fast and easy
  • Adheres well on many surfaces
  • Comes as a continuous rolling tape
  • No skips or runs ensuring flawless results
  • Can be a bit expensive

The Butyl Seal Tape is an effective sealing material for RV roofs. This product is ideal for uniquely made even for shaped joints. You can easily apply it because it can also form and dry quickly without any hassles. RV owners like us love this product because it can install so fast, leaving no gaps.

Without gaps, you can ensure that moisture and water won’t enter any space on the RV roof fixture. With that, you can also have peace of mind that your heads will stay dry even when it’s raining and you’re having a party in your RV.

The Dicor RV roof sealant is great for application along unusual patterns, too. You can apply and use it around vents, venting systems, air conditioners and other surface materials need waterproofing. It can also create a seal along the edges of the roof as well as around vent pipes and air vents.

This roof cement can also stick well without sticking out and messy look. If you made a mistake in the application, you don’t have to fret because it is easy to clean up for that flawless appearance.

It is a cost-saving option because you don’t need a lot of it when applying it on surfaces needing sealing from moisture and water. You can also have peace of mind for its long-lasting performance.

The Dicor Butyl Tape is one of the unique products in the category we found. Installation is a breeze and it won’t take long before you could move on to the next job, such as painting its surface. As it can also work well even in unusual patterns, you can apply it without worries. It is available continuous roll, you or an installer won’t consume much time in sealing the RV roof. Also, this product is guaranteed to have no runs or skips in the sealing process. That is excellent patching or caulking in gaps, ensuring no moisture or water to enter even the tiniest spaces.

On the downside, it is a bit expensive though.

8. Beech Lane RV White Roof Sealant

  • Self-priming sealing action
  • Resistant to all types of weather
  • Ideal for leak emergencies
  • Can last up to 20 years of outdoor exposure
  • Lifetime warranty or money back guarantee
  • Not to be used in silicone material

Do you want to seal the RV, trailer or camper roof permanently to prevent or stop leaks? If so, you might want to take a look and consider the Beech Lane RV White Roof Sealant that can work perfectly to help you achieve this purpose.

You don’t have to worry about installation hassles because it comes as a tape. With it, you can just apply the tape and let it stick well on the surface. This product is a self-priming tape that can seal the gaps instantly. Whether you or an installer will apply the sealant, there is no hassle because of the instant and weatherproof seal it can provide the roof with for a long time.

The product also has excellent UV resistance. With such characteristic, you can be certain that it won’t crack. With it, you also don’t need frequent applications, saving you money in the end. You can also have peace of mind that you can get long lasting results with this efficient sealant.

It can help in stopping the leaks in your camper or trailer permanently. Thus, you can have more leisure time camping or partying in your RV than worry about leaks.

The product can also be used in any temperature, even in the hot weather. You can get the job done fast, but you can also clean it up easily in case you made a mistake.

The sealant tape also works well on PVC, EPDM, TPO and hypalon. For the best results, prepare the surface material using denatured alcohol. Clean and dry it up before applying the tape.

If your camper roof is faulty or leaking, you can also depend on the product that is made with self-priming technology. It sticks well but does not cause stains and discoloration on the surface to which it is applied. This product can also help in preventing rots and hefty spending on repairs.

On the negative, the product should not be used on silicone materials.

9. XFasten Butyl Seal Tape

  • Does not melt
  • Provides a watertight finish
  • Easy to install and has a long shelf life
  • Permanently seals surfaces
  • Works on many surfaces, including frosted fiberglass and galvanized metal
  • Can be a little bit pricey

The XFasten Butyl Seal Tape is an effective tape adhesive that can seal the RV roof for a long time and permanently. You don’t need to reapply it frequently because it has a great sealing ability that makes it one of our top choices when it comes to RV roof sealants.

When looking around for EPDM coatings, you might not want to miss the one that can be installed easily because it is in the form of a tape. It is a flexible sealer that can also help you with window and boat sealing aside from RV repairs and maintenance. With it, you don’t have to buy separate products for a wide range of applications.

This tape also has a long shelf life, which makes it one of the top performing products in the category. It does not melt like other sealants, so you can transport and store it without worries that it won’t work the next time you need it.

The adhesive RV roof tape also has a high temperature range that makes it ideal to apply on any temperature. You can apply it even on a hot summer day. The XFasten Butyl Seal putty tape also sticks and adheres well on many types of surfaces, including on wood, aluminum, plastic, frosted fiberglass, galvanized metal as well as on other common camper surfaces.

Overall, this product is one of the best on the market we found. It is versatile to work on many applications, including on automobile, home, RV, camper and boat surfaces. The product also works on usual surface patterns for maximum coverage.

On the cons, it is a bit pricey though.

10. Cofair UBE425 RV Roof Sealant

  • Can work on usual patterns and tight corners
  • Long lasting performance
  • Does not harden, crack or shrink
  • Compatible on many types of material surfaces
  • Professional grade for RV and mobile home repairs and maintenance
  • Can be a bit expensive

The Cofair UBE425 works and sticks well on many surfaces, making it one of the most versatile RV roof sealants in the category. It comes in a white color that makes it suitable for your camper, RV, trailer or any surface needing watertight sealing.

It is ideal for many types of materials, including fiberglass, wood, TPO, EPDM, vinyl, OSB and wood, and other building materials. The product is self-adhesive, making installation a breeze. You don’t have to take a lot of time applying it on the surface. When cured, paint can be applied on top of it. This sealant can also be reapplied over itself.

The RV roof sealant is also made in the USA and is guaranteed to resist shrinking, cracking and hardening. You can look forward to its long-lasting effect. It can seal the roof permanently without you having to reapply it frequently.

The rubber roof patching can help you prevent leaks in your RV. It can also be used to seal around venting systems and air conditioners, along with other surfaces needing rubber roof patching.

Overall, the roof sealant for the recreational vehicle is one of the most valuable we found on the market. You can rely on it for its top performance and optimum efficiency for a seamless sealing. It is also high quality and does not stain or discolor a surface.

On the cons, the product can be a bit expensive.

Why You Should Trust Us

Smart RVing is made for you, our fellow RVers. We only have one mission in mind – to share our knowledge about RV products so that our community can pick well and use only the best products in the category.

Our reviewers also made a thorough and comprehensive research and comparison of each product we have featured here. They have also listed the most important points used when choosing among the wide range of products available on the market. We have also prepared a short FAQs section that will help in answering your most common questions about RV roof sealants.

You should also trust us because we’re here to help you pick the right product suitable for you and decide based on information you can derive from the buying guide we have prepared for you.

Overall, our team only wants to help you get the most useful RV roof sealant to work on your needs and give you the most value. Hope you picked up useful information from this guide to find the best RV roof sealants.

What Is An RV Roof Sealant

Best RV Roof Sealant

It is a recreational vehicle roof sealant is especially designed and made for campers, trailers, marine and recreational vehicles, varying from brand to brand. It is a strong sealant that is usually made of rubber material. What it does is preventing water and moisture from getting into the roofing material.

With the protection it provides, you can have peace of mind that your RV roof will last long, saving you money on large repairs and maintenance expenses. Such a product can also prevent your RV roof from breaking down especially if you’re constantly camping or you’re living in your RV, which is always exposed to harsh elements and changing temperatures.

However, remember that not all sealants have the same functions. They also vary in composition and thickness. Generally, most of them can stick well on many types of surfaces, including wood, glass, stucco, fiberglass, vinyl, plastics and other surfaces. But then, check the maker’s description and see that the sealant you’re buying would work on the surface you intend to install it.

Nevertheless, these sealants can also work in sealing around vents, screw heads and air conditioners, along with other RV surfaces that need rubber sealing.

Types Of RV Roof Sealants

Types of RV Roof Sealants

The two most common types of RV roof sealants are the self-priming tape and the liquid roof sealant. They work in the same manner of sealing the RV roof to prevent leaks and caulking gaps to ensure of no heat and cooling loss.

Self-priming and adhesive tape

As the name says, the self-adhesive RV roof tape usually comes in a continuous rolling tape. It is very easy to install and does not require much time to move from one job to the next. Its surface can also be painted instantly. It is also cost-effective and mess-free. You can also use it in many types of temperature and weather. The roof sealant tape can also work well on unusual patterns and tight corners. It can ensure of total coverage and a gap-free application.

Liquid roof sealant

It is another type of RV roof sealant to consider. We have listed some of them in our list above. These liquid roof sealants benefit RV owners in the same manner that tape sealants do. They can provide leak protection in RV roof fixtures. This product can also ensure of watertight finish because it sticks permanently. When you commit a mistake in applying it, you can easily clean it up without worries. It can also be made of different materials, including EPDM. For this reason, you should pick one that matches your needs and can provide you with desired adhesion results.

Why Do You Need An RV Roof Sealant

RV Roof Sealant FAQs

There are many benefits to using the best RV roof seam sealant and some of them we’re highlighting in the following section.

Leak-free RV roof

Getting RV roof repairs is expensive especially if the problem isn’t small. When it comes to leaks, preventing it is better than stopping it when already there. You should get an RV roof sealant if you want to protect your RV roof from leaks.

UV resistance and reflectivity

Most of the best products have high UV resistance, so they resist discoloration and deterioration. Some of them also have high UV reflectivity, a measure of the specific heat and light amount reflected away from the RV roof. It is the perfect sealant if you’re looking to keep your RV roof on top condition.

When choosing a sealant with this property, it pays off to select a reflective and cool sealant with high reflectivity. With it, you can also reduce the maintenance you need for your RV roof. You also don’t have to worry about your roof failing to work prematurely because the roof sealant can keep it away from UV and heat damage.


It is one of the main advantages of using this product for your RV roof. The best ones won’t crack because they can move as the fixtures do. They have expansion and contraction rate, ensuring of long-lasting performance. These products have the ability of stretching and recovering, which also means the effectiveness of the RV roof sealant. It also means that the sealant can work even in changing temperatures and weathers. Having a good elongation rate, it can also prevent cracks.

Tear and vibration resistance

We also recommend the RV roof sealant to have on board all the time because it is versatile and can work on leak emergencies. That is not all though because this product also has an excellent tear and vibration resistance. It does not tear because of roof movements, changes in the weather, temperature and environment and foot traffic. For the best results, you should pick a product that can maintain its top performance because of its excellent tear and vibration resistance.

Long lasting performance

With its long-lasting performance, you can also rest assured that your roof will have an extended lifespan and you don’t need to spend on large RV roof repairs and maintenance. Once applied, the product can keep working to prevent RV roof leaks and moisture buildup. As it can also protect the roof from harsh weather elements, it can also keep your RV shielded from harmful and damaging UV rays. It can also protect your recreational vehicle roof from the rain and snow. The product can also deal with freezing and thawing.


The rubber roof coating for RV camper trailer is also versatile to use in many applications, including on boats and marine. It is a professional grade product that can even be used above and below the waterlines. However, you should also check out and read the maker’s description to ensure that what you’re buying has that property. In general, many of them can also be used in caulking and sealing around the roof’s edges, venting systems, air conditioners and screw heads.

How We Picked

how to choose the Best RV Roof Sealant

We understand the difficulty of looking for the right RV roof sealant. There are many kinds of these products; each can be used for different situations to achieve a specific desired result. That is why we’ve made a list of considerations when comparing and reviewing each sealant we’re reviewed in this guide.

The application reason

One of the first things to consider when shopping around for an RV roof caulking or sealing product is its ability to seal the application reason or purpose you have. It is the same reason you have to determine the application purpose before buying one.

If you just also need to fix a small leak, buying a tube sealant might just be what you need. On the other hand, you might need a larger variety if you need to do a huge repair on your roof that has degrade over time and needing recoating.

For this reason, you should also figure out the level of degradation your roof has before buying a roof sealant.

The roofing material

Know the exact roofing material you have to determine the right kind of product top buy. The most common roofing material is rubber. It is what most recreational vehicles have because it is cheap and lightweight. You should pick a sealant to work well and stick on this surface for the best-desired effects. Shop around for roof sealants that can work effectively on rubber roofing materials.

Another kind is Ethylene Propylene Diene Monomer (EPDM), which requires no extra UV protection; however, it needs recoating from time to time. You should take note of that.

On the other hand is the Thermal Poly Olefin (TPO) roofing material, which is sturdier than EPDM as well as shinier than the other types of roofing materials.

Tear resistance

We also considered elasticity when comparing the products we’ve featured in this guide. It is the product’s ability of twisting or turning and expanding or contracting without losing the protection that it provides the RV roof with. On the other hand, tear resistance refers to the strength of the product when it comes to the amount of force it can deal with before it breaks up.

Elasticity applies to both types of RV roof sealants – the tapes and the liquid sealants. Liquid sealants might need bit flexibility for the changes. For tape sealants, look for those difficult to tear and have a high flexibility.

Ease of application

You shouldn’t buy a roof sealant that requires much effort and time to install. In addition, you might want to avoid varieties requiring an activator or a primer that you probably don’t have with you. That is why you have to check carefully before buying. Buy one that is easy to use and clean up in the case of mistakes in application.

Frequently Asked Questions

Q: How to remove RV roof sealant?

A: It depends on the type of sealant applied. But in most cases, you can find the basic and easy instructions on how to remove the sealant on the maker’s manual of instructions. In the case of liquid types, many do not dry hard to give you a difficult removal time. Nevertheless, the best sealants do not require much time in removal.

Q: How to apply the RV roof sealant?

A: The process is easy. In most cases, you just have to prepare the surface, clean and make sure it is dry before applying the RV roof sealant. For complete steps and instructions, check the user manual provided or read the label.


Have you decided on the best RV roof sealant to buy? Compare and study your options well. You can begin the research and selection process on the products we have listed above as well as on the factors to consider when shopping around for this product. Nevertheless, pick one that matches your needs, roofing material and budget, among other considerations you deem important in the selection process. If you’re looking for more products in RV cleaning and maintenance, then I suggest going for these articles: best RV roof coatings, best RV wash and waxbest RV caulksbest RV waxbest RV roof cleaners and best RV awning cleaners. I do hope you will like them. Happy shopping!

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