9 Best RV Roof Sealant Recommended Products

Best RV Roof Sealant Recommended Products

First of all, let me tell you that these RV roof sealant products can help you to stop minor leaking. However, in all cases you have to repair the roof, you have to dry it completely, and only then you can perform the application of the sealant. The RV roof sealant is not a reparation of major structural leaks. In these cases, you have to undertake a complete RV roof repair.

Usually, the roof is most susceptible due to exposure to the elements (rain, wind, and snow). It is therefore highly necessary that you constantly maintain and protect your RV roof coating. By doing so, you ensure that your RVs condition remains pristine and its resale value does not depreciate drastically.

If you have noticed any cracks or holes on your RV’s roof, it is absolutely crucial that you act fast to prevent further deterioration. After repairing the roof, as I described above, you have to apply the best RV roof sealant that is suited for your RV.

Fortunately, there are many different RV roof sealants in the market. With the right kind of information, you can certainly get the right one for your motorhome, camper or travel trailer.

Without further ado, here are the best RV roof sealant products on the market right now.

1.  3M Fast Cure 4000

This  3M product is a standout amongst the best ones. They have also 3M tape products, for similar purposes, but I have not used them. Therefore, they are not included in this list.

So, this 3M product can be recommended to proprietors of recreational vehicles searching for a compelling and proficient sealant that will not split or produce stains in the rooftop of your motorhome or travel trailer. You can utilize it for fixing vents, and climate control systems, such as RV AC units.

This product can be applied firmly to numerous substrates, offering a good waterproof sealing. It is perfect for various marine and RV applications. The ability to adapt to different surfaces, from wood (according to the manufacturer, as I did not test it on wood) to aluminum is something to be noticed, as many other products are limited in their scope of application. With this level of waterproof protection, you can rest assured that you do not need to worry over leaking.

You can anticipate any kind of issues since this RV roof sealant can be used for sealing RV AC units, as well. As explained above, it can be utilized in diverse substrates. Thus, it enables you to avert spending on fixes that would some way or another influence negatively your expenditures.

This RV roof sealant is intended for durable and solid execution. Something else I can mention about this sealing product, in my experience is its firm attachment to the material wherein it is applied. It has high toughness against any unforgiving conditions. Complements very well any RV roof coating undertaking.

Recommended for boats and pontoons, it is also suitable for all kinds of RVs, as I explained above. No matter whatever the condition is, you can certainly depend upon this product without any doubt at all. It can resist contracting, swelling and vibrations; like the ones, we usually encounter in boats and RVs.

  • It can work both above and below the waterline, so it is suitable for RVs as well.
  • Available in drums, volumes, and smaller cartridges.
  • It provides long-lasting performance.


  • No cons that I have found. This is my first choice.

2. Dicor 501 – LSW – 1 Lap Sealant

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The Dicor RV roof sealant is one of the most highly-rated products for RV owners. Its main selling point is its ability to create watertight seals around air vents, screw heads, vent pipes, and roof edges. Another advantage to this RV roof sealant is that it works well on a variety of different materials including, concrete, vinyl, mortar, galvanized metal, fiberglass, aluminum, and wood.

Additionally, the Dicor 501 –LSW RV roof sealant displays impressive UV resistance properties. This means there will no discoloration or staining on the material which it is applied to. Its flexibility ensures it will not crack after application.

This RV roof sealant is also highly compatible with EPDM (Ethylene Propylene Diene Monomer) sheets as well as TPO (Thermal Polyolefin) sheets.

Aside from its flexibility and impressive performance, this self-leveling roof sealant is favored due to its ease of application. It usually skins over in just 5 minutes after application. One coat of this RV roof sealant fully cures your RV’s roof of all cracks and holes within 48 hours of application. However, for best results, it is advisable to use two coatings.


  • Works well with a variety of materials including fiberglass, wood, and aluminum.
  • Well suited for both EPDM and TPO sheets.
  • Creates watertight seals around all the RV roof components including, screw heads and roof edges.
  • Highly flexible and impervious to cracking.
  • Strong UV resistant properties.


  • Self-leveling cannot be applied vertically.
  • It is relatively expensive compared to other RV roof sealants in the market.

3. EternaBond RoofSeal Sealant Tape

The EternaBond Roof Seal Sealant Tape holds a high reputation when it comes to RV roof sealant products in the market. In addition to its high performance, this tape also exhibits high flexibility, being able to stretch up to 700 percent according to the manufacturer. Apart from this, the EternaBond Sealant Tape has a high elongation factor which makes it capable of expanding or contracting or contracting as required during and after application.

The EternaBond Sealant Tape is highly versatile and works well with a variety of materials including TPO, EPDM, wood, concrete, metals, and PVC. This RV roof sealant also displays impressive UV resistance and has been proven to last up to 19 years after application. Another property that makes the EternaBond RoofSeal highly sought after is its ease of application. You only need to prepare the surface minimally before applying the Sealant.

The adhesive side of the EternaBond Sealant comes with a silicone lining which prevents the tape from sticking onto other surfaces prior to application.

The downside to this high-performance RV roof sealant is that it tends to be a bit pricier than its counterparts in the market. Nevertheless, its numerous impressive properties make it one of the most efficient RV roof sealant options available today.


  • Properly seals any cracks and seams on your RV.
  • It can be applied to many different RV roof materials including aluminum, wood, concrete, and metal.
  • Highly elastic and can stretch up to 700 percent thus ensuring maximum flexibility.
  • It is UV stable and can withstand up to 19 years of sunny weather.
  • High elongation factor.


  • Difficult to use if instructions for application are not followed correctly.
  • More expensive than other roof sealants.

4. Proguard F99911 1-Gallon Liquid Roof Sealant

The Proguard Liquid RV roof sealant is one of the most popular rubber RV sealants in the market at the moment for a variety of reasons. First of all, this product works well with several different materials including, aluminum, wood, and EPDM.

Additionally, the Proguard Liquid roof sealant is UV stable and can, therefore, survive many years of exposure to sunshine and other weather elements. It has been proven that the Proguard Sealant can withstand temperatures as high as 300 degrees Fahrenheit. Similarly, this roof sealant displays high resistance to ozone, thereby guaranteeing peak performance many years after application.

Another key advantage which the Proguard liquid roof sealant has over its counterparts is that it requires only a single coat application. Its liquid properties also make it economical when covering wide surfaces. The typical 1-gallon kit which it comes in is enough to cover an area of about 42 to 46 square feet of roof space.

The Proguard liquid roof sealant is easy to apply and becomes waterproof immediately after application. It also dries up very quickly, therefore 100% cure can be achieved in a very short duration following application.

This amazing RV roof sealant is also backed by a 5-year warranty ensuring customers get their money’s worth upon purchase.


  • The liquid property makes it easy to apply.
  • Very economical since 1-gallon can cover up to 46 square feet of roof space.
  • The cure is achieved immediately after application.
  • Only a single coat required.
  • Backed by a manufacturers’ guarantee of 5 years.


  • Solidifies very rapidly. It, therefore, has a time limit for application. I see this as a disadvantage.

5. Geocel 28100V ProFlex Flexible RV Roof Sealant Tube

This is another highly rated product when it comes to sealing RV roofs for myriad reasons. One of the reasons for its popularity is its high versatility. The Geocel roof sealant tube works well with a variety of different RV roofing materials including, vinyl, fiberglass, wood, aluminum, and glass.

This RV roof sealant is also highly popular due to its ease of application. It exhibits impressive non-stringing qualities meaning any messes made during application can be wiped clean to achieve a clean finish.

The ProFlex can be applied successfully on dry and damp surfaces; therefore preparation required prior to application is very minimal. Furthermore, this wonderful product is impervious to cracking after application. It is also pliable for some time after application; hence you can mold and shape it as desired.

The Geocel ProFlex is incredibly UV resistant, thereby guaranteeing many years of protection following application. Moreover, this RV roof sealant is known to cure faster than most products in the market. You can, therefore, expect to be back on the road shortly after application.

This impressive RV roof sealant comes in a variety of colors to choose from, ensuring you get the right match according to the color of your recreational vehicle.


  • Highly resistant to cracking.
  • It is very durable.
  • It can be applied successfully over pre-existing coatings.
  • Highly versatile and can be applied to many different materials including glass, aluminum, and steel.
  • It is UV stable, and can, therefore, survive a prolonged exposition to sunlight.
  • It comes in a variety of colors to choose from.


  • Not very ideal for RV rubber roofs in my opinion. Please let me know in the comments if you had a different experience than what I had with this sealant.

6. ToughGrade Self-Leveling RV Roof Lap Sealant

This RV roof sealant is ideal for any RV owner looking for a great roof sealant at a reasonable price. It works exceptionally well with sealing around roof edges, screw heads vent pipes and air vents.

The ToughGrade Roof Lap Sealant is a prime choice for application on materials such as wood, aluminum, galvanized metal, vinyl, and mortar.

Another upside to this product is that it is highly UV stabilized and is therefore strongly resistant to discoloration or staining. Likewise, it is resistant to extremes of weather such as snow and rain. It, therefore, guarantees your maximum roof protection for prolonged durations of time.

Due to its attractive price, the ToughGrade Roof Lap Sealant eliminates the need to purchase separate RV roof sealants. In fact, with the 4-pack offer that it comes with you can seal the entire roof of your recreational vehicle successfully.

The one downside that should be noted is that this roof sealant may cause irritation on the skin or eyes. Therefore proper care and protection must be exercised during and after application. The fumes it produces during application are also unpleasant; hence the application should be done in a well-ventilated place.


  • It comes in a generous pack of 4-tubes weighing 10 ounces each.
  • Generally less expensive than most RV roof sealants.
  • Works efficiently to seal roof edges and around vents.
  • It is self-leveling therefore easy to apply.
  • It is UV stabilized for maximum protection and longevity.
  • Works well with a host of materials including wood, aluminum, and vinyl.


  • Only available in white.
  • Releases unpleasant-smelling fumes during application.

7. Proguard Liquid Roof 4-Gallon RV Roof Sealant

This liquid RV Roof Sealant is specially designed for recreational vehicles by virtue of its size alone. It comes in a 4-Gallon pail which weighs about 40 lbs when full. This rubber-based RV roof sealant is highly suited for recreational vehicles with EPDM and TPO roofs as well as other surfaces. The 4-gallon offer is enough to cover an RV roof area of roughly 168 square feet.

The application process of this RV roof sealant is pretty simple and straightforward. It comes with a premixed catalyst that you pour into the sealant liquid and begins the application process promptly. The great thing about the Proguard Liquid RV Roof Sealant is that the pail it comes in has enough space for the catalyst as well. As a result, you will not need another container to mix the two.

Additionally, purchasing the 4-gallon offer instead of the 1-gallon is a great way to save money since the cost is incredibly reduced.

Just as with the Proguard 1-gallon RV roof sealant, the 4-gallon offer comes with a 5-year warranty thereby ensuring customers get the best value from this amazing product.

This RV roof sealant is also UV stabilized to ensure maximum protection for long periods of time. If you are thinking of getting a great roof sealant for your RV at a reasonable price, the Proguard 4- gallon is indeed a worthy option to consider.


  • It comes in a large quantity (4 gallons ) enough to cover up to 168 square feet of RV roof space.
  • The package comes with an easy to use catalyst.
  • Performs well on several materials including EPDM and TPO.
  • Well suited for full reseals of RV roofs.
  • It comes with a 5-year warranty upon purchase.
  • Ensures you save money (no need for purchasing other roof sealants).


  • Weighs over 40 lbs and is therefore very bulky to transport.
  • It only comes in one color (white). You, therefore, do not have the freedom to choose different colors.
  1. Geocel 24200 RV Roof Sealant

Unlike other similar products in the market, the Geocel 24200 RV Roof Sealant packs a multitude of attractive features that make it a prime contender for the best RV roof sealant in the market. First of all, this product is fibred, thereby making it strong enough to withstand foot traffic during and post-application. Secondly, Geocell 24200 requires no primer and can, therefore, be applied in a single coat. Also, this RV roof sealant dries very quickly, meaning paint can be applied soon after the application of the roof sealant.

The Geocel 24200 is well suited for a myriad of surfaces including but not limited to steel, vinyl, and wood. It also features strong UV resistant properties which ensure it survives long periods of exposure to sunlight and other vagaries of weather. Additionally, this RV roof sealant has a very short cure period making it possible for you to take your recreational vehicle on the road shortly after application.

The Geocel 24200 RV Roof Sealant is best for non-rubber RV roofs. Therefore you should consider other roof sealant options if your recreational vehicle has an EPDM or TPO roof. Otherwise, this RV roof sealant packs all the attractive features any RV owner could want in an RV roof sealant.


  • Very quick to apply. You will attain a fine finish after a very short period of time.
  • Requires no primer or step application.
  • It is fibred, therefore guaranteeing extra strength.
  • Able to withstand foot traffic during and after application.
  • Reduced cure time/ Vehicle can be used shortly after it was applied.


  • Not suited for rubber-based surfaces (EPDM, TPO, and Polystyrene).

Things to Consider when Buying an RV Roof Sealant

Finding the right roof sealer for your recreational vehicle is undoubtedly one of the most important ways of ensuring your RV’s condition remains pristine. There are different kinds of RV roof sealers on the market today, each with its own application methods and advantages. In order to get the best deal, you need to have a proper understanding of the nuances involved before you settle on the right deal.

Here are some of the factors you need to take into consideration when deciding which RV roof sealant to buy:

The Reason for Application

Before you decide on the appropriate RV roof sealant to buy, it is absolutely important that you understand the reason for the application. You might discover that the roof of your recreational vehicle only has a crack or small tear, which may prompt you to choose a simple tube RV roof sealant or a tape sealant to cover the affected area.

In more severe cases where your RV’s roof has undergone considerable wear and tear over the years, you may need to apply an entirely new coat. You will, therefore, need to apply an entirely different RV roof sealant. Liquid sealants are more suitable in this regard. Whichever your reasons, you are required to make a thorough background check to determine the extent of the damage and seek professional advice before making a final decision.

The Roofing Material of Your RV

Understanding the roofing material of your recreational vehicle is also highly crucial when evaluating the right RV roof sealant to purchase. Roofing material for RVs come in three main different types:

. Rubber

This is undoubtedly the most common roofing material for RVs due to its lightweight compared to other materials like glass, metal, and concrete. Rubber-based RV roofs are also generally cheaper which makes them even more popular with RV owners.

Rubber-based RV roofs come in two main distinctions namely: Ethylene Propylene Diene Monomer (EPDM) and Thermal PolyOlefin (TPO)

EPDM RV roofs generally have a rubbery look/feel and usually require no additional UV protection. They also tend to oxidize fast and therefore require regular recoating.

TPO-based RV roofs, on the other hand, are stronger and can, therefore, survive long exposure to weather elements. Consequently, they can be used for many years without the need for recoating.

. Fiberglass

Although not nearly as common as rubber-based RV roofs, fiberglass roofs are also available. These tend to oxidize just as much as EPDM RV roofs but can be coated with clear roof sealants to give off a shiny appearance.

. Aluminum

Aluminum RV roofs are less common compared to the other types of RV roofs. Nevertheless, they possess an advantage over the other types of RV roofs due to their strength and durability, which Airstream owners know well. Aluminum RV roofs do not require complete recoating

Elasticity and Tear Resistance

When purchasing the right RV roof sealant for your vehicle’s needs, it is necessary to factor in the elasticity and tear resistance of the sealant regardless of whether it is liquid or tape. Rubbery sealants are appropriate for joints that are subject to expansion and contraction. Rigid sealants, on the other hand, work well on areas that are exposed to considerable weight or pressure.

UV Stability

Another factor to take into account when getting a roof sealant for your RV is the UV resistance of the sealant. Prolonged exposure to ultraviolet radiation from the sun can cause your RV’s roof to wear out. When deciding which roof sealant to buy it is therefore essential that you ensure it is UV stabilized. This feature will significantly prolong the lifespan of your RV’s freshly coated roof.

Ease of Application

Ideally, you want an RV roof sealant that you can apply with minimal effort. You must, therefore, take note of the requirements for application before you settle on any option. Some RV roof sealants require additional compounds like catalysts and activators.

It is therefore important to understand these requirements as well as how to use them before you decide on the roof sealant to buy. This helps in minimizing losses as you will be able to choose the perfect sealant for your needs.


By now you are probably aware of just how important RV roof sealants are to the longevity of your recreational vehicle. A good RV roof sealant should enable you to get rid of any wear and tear that your RV’s roof has been subjected to over years of exposure to varied weather conditions. Even if your RV does not have a leaking roof, you can still apply a new coat to make it look more attractive and glamorous.

The market is filled with numerous RV roof sealant options each with its own remarkable qualities and advantages. You can rest assured then that the right RV roof sealant for your RVs needs is within your grasp. The different products we have reviewed are without a doubt the best in the market. If you are looking to give your RV’s roof a fresh new look or fix any cracks that may have appeared on it, you will do best to consider these products. Ultimately though, the choice is yours to make.

Buying an RV is without a doubt one of the best investments you can make if you frequently travel on the road. A quality RV offers you the convenience of traveling long distances with ease as well as serving as a makeshift home on the road. However, even the best RVs are prone to wear and tear over time. Repair the roof to avoid leaking. Only after this repair process, you can apply the RV roof sealant. The sealant is not a magic remedy without a proper roof repair.

Anthony Foxx

I am Tony, an RV designer and RV developer. I create bill of materials for RV manufacturers for travel trailers and fifth wheels. I worked as a freelance transportation consultant for Lyft. As an RV development consultant, I create customization trees for RV manufacturers who want to offer a solution to prospective customers to design their custom RV with variant configuration. Apart from this, I sell in Indiana trailer hitches, hitch balls, goosenecks and weight distribution systems where I provide advice to customers who want to know which is their towing capacity, which hitch ball should they utilize and how to deploy a weight distribution system. I do my best to explain all these processes and their installation, here in RV Favorites.