Best RV Roof Sealants & Coatings: Keeping Your RV Roof in Tip-top Shape is reader supported. When you buy through links on our site, we may earn an affiliate commission.

It’s common knowledge that damages to the roof of recreational vehicles easily lead to expensive repair bills if RVers fail to take proper precautions. Because of that, in modern-day RVing, securing the vehicle roof is considered to be one of the top priorities.

To protect the roof, owners of recreational vehicles have a wide range of options but regarding practicality and longevity, none could outmatch sealants and coatings. Just by applying layers of sealants and coatings to the roof of your rig, you would be able to keep it safe from various dangers from rain to UV rays.

With the market well-saturated with sealants and coatings for RV roof, enthusiasts of RVing have quite a few choices. However, if you don’t have a firm grasp of products available for purchase then finding the best RV roof sealant may be a challenge. 

Best RV Roof Sealants & Coatings Comparison Chart

NoRV Roof Sealants & CoatingsTypesPricesOur Ratings
1Dicor 501LSW-1Sealant$*****
2Geocel Pro Flex 28100VSealant$*****
3Ziollo Flex RepairSealant$***
5EternaBond RSW-4-50Sealant Tape$$*****
6Proguard F99911Rubber Coating$$$****
7Heng’s TG-976Rubber Coating$$****
8Dicor 95D40-35Rubber Coating$$*****
9Flex Seal Liquid Rubber in a CanRubber Coating$$$*****
10Proguard LiquidRubber Coating$$$$$****
11Dicor RPFRC1Fiberglass Coating$$*****
12Kool Seal KS0063300-20Elastomeric Coating$$$****
13Jetcoat Cool KingElastomeric Coating$$$****
14Kool Seal KS0034600-16Elastomeric Coating$$***
15Rust-Oleum 301904Elastomeric Coating$$*****

RV Roof Sealant & Coating Basic

What is it?

In layman’s terms, an RV roof sealant is a product designed specifically to protect the roof of recreational vehicles. Once applied, such sealants would proceed to stop water, moisture, debris and things like them from damaging the RV roofs. 

Benefits of RV roof sealant & coating

  • Reduce wear and tear rate: As you travel between locations, your rig is going to be routinely exposed to elements. By making use of sealants, you could slow down the wear and tear of the roof of your RV roof. 
  • Cut down the repair expenses: Recreational vehicles with roof sealants often receive less damages in use compared to those without. Therefore, securing roofs with sealants is an excellent way to keep repair expenses under control. 
  • Improve temperature regulation inside interior: Besides protecting the roof of recreational vehicles, RV roof sealants also help with temperature regulation. With roof sealants, it’s a breeze to keep the interior cool in the summer and warm in the winter. 
  • Decrease the overall power usage: Owing to the regulation of temperature provided by roof sealants, RVing enthusiasts don’t have to run air conditioners and heaters frequently on the road. That naturally leads to drops in vehicle’s power usage as well as utility bills. 

Types of RV roof sealant & coating

An assortment of RV roof sealants exist but today’s market packs three types of products: urethane, silicone and acrylic.

  • Urethane Sealants: Resilient and long-lasting, urethane sealants tend to be prized by enthusiasts of RVing that travel extensively and lack time to reseal the roof on a regular basis. Products of the type easily take on typical elements in the outdoors without breaking down. On the downside, urethane RV roof sealants have lingering odors.
  • Silicone Sealants: Owing to their elastic nature, silicone sealants adapt well to all kinds of arrangements and take little work to apply in most cases. That is why products of the type earn a shower of praise from serious RVers. Silicone sealants have slightly steep prices and attract dirt though.
  • Acrylic Sealants: Inexpensive and give a good account of themselves in diverse environments, silicone RV roof sealants prove pretty much unmatched in terms of all-around performance. In addition to that, products of the type could be applied in lots of environments.

Best RV Roof Sealants

Owing to the diversity of personal preferences and individual liking, the same product could get different feedback from different RVers. That being said, if you seek a solid motorhome roof sealant, it’s widely advised that you keep an eye out for the following products:

1. Dicor 501LSW-1 Self-Leveling Lap Sealant

Dicor 501LSW-1
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  • Self-leveling 
  • UV-stabilized
  • EPDM and TPO compatible 

Why We Love It:

Engineered with versatility in mind, Dicor 501LSW-1 is simple to use and works like a charm in multiple environments. Being EPDM and TPO compatible, the sealant of Dicor is able to adhere securely to the roof of standard recreational vehicles. In addition to that, once properly cured, 501LSW-1 could be painted upon without any preparation. As a result, the presence of Dicor 501LSW-1 is going to have inconsequential impacts on exterior redecoration in the future and that is really handy. 

One interesting thing about 501LSW-1 is that it’s UV-stabilized which minimizes troublesome issues such as deterioration and discoloration. The watertight nature of the Dicor roof sealant allows it to handle splashes of water with relative ease as well. Hence, in the case that you wish to keep your rig in top shape and preserve its aesthetic values, Dicor 501LSW-1 would be the best RV roof sealant for you. Since 501LSW-1 is low-priced, stocking it up is just a walk in the park. 

The self-leveling sealant made by Dicor is distributed in compact tubes so it could be used at any time and storage is a breeze. Even with large rigs, the genius capacity of 501LSW-1 means RVers only have to use several tubes for sealing projects. Needless to say, Dicor 501LSW-1 is held in high esteem by no-nonsense RVing enthusiasts. 

I have used Dicor Sealant for the past 10 years. The #1 destroyer of a beautiful RV is water intrusion. Although butyl tape is used under vents, railing and windows, especially on horizontal applications you need additional sealant.

I personally check my sealant once a year for any deep cracks. The time to replace sealant is before it leaks… NOT after. Yes it takes 8-10 tubes to reseal my 30’ Rockwood. But it cost me $800 to repair a delamination bubble on the slideout 2 years after I bought my RV.

I’ve used Dicor Lap Sealant for the years since and never had another problem.

Shared by Dave


  • Long-lasting 
  • Reasonable price 
  • Excellent compatibility 


  • People notice inconsistencies between products 
  • Packaging still leave something to be desired  

2. Geocel Pro Flex RV Flexible Sealant (28100V)

Geocel 28100V Pro Flex Crystal Clear RV Flexible Sealant
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  • Easy cleanup 
  • Crack and UV resistant
  • Non-stringing formulation

Why We Love It:

Boasting non-stringing formulation, Geocel Pro Flex (28100V) is a robust roof sealant for RV that never fails to please. With a splendid resistance to crack and UV rays, Pro Flex (28100V) provides protection to the roof of recreational vehicles in a lot of conditions. Moreover, the sealant made by Geocel greatly reduces accumulations of dirt too so keeping the exterior cleaned is a snap. Unsurprisingly, RVing enthusiasts that travel on a regular basis and don’t have many opportunities to clean their rigs deem Geocel Pro Flex (28100V) as the best RV roof sealant

In terms of compatibility, the sealant from Geocel adheres well to plenty of roofing materials including aluminum, wood, fiberglass, vinyl, … It’s worth pointing out that the adhesion of Pro Flex (28100V) remains the same when damp so applications could take place at any time. As Geocel Pro Flex (28100V) is both resealable and paintable, owners of recreational vehicles have the option of adding extra layers of sealants and paints. Because of that, the roof sealant of Geocel earns positive remarks from the RV community. 

Available at an economical price, Pro Flex (28100V) matches the wallet of the average RVers. The Geocel sealant is released in containers with a decent capacity so a single tube is enough for usual rigs. 

This is the industry standard for sealing anything on the side of your RV. One trick I learned was that you do not have to run a super neat bead. Run your bead as neat as you can then spray it with soapy water. You can then easily smooth out the bead with your finger, without it sticking to your finger. It gives you really professional looking results.

Shared by Adrian Henson


  • Adaptable 
  • Sublime endurance 
  • Uncomplicated application 


  • Mediocre delivery service 
  • Users occasionally complain about receiving outdated products 

3. Ziollo Flex Repair RV Sealant and Exterior Caulking

Ziollo Flex Repair
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  • Non-hazardous
  • Wet and dry application 
  • No shrink 

Why We Love It:

Dependable and reliable, Ziollo Flex Repair is capable of serving as an all-around shield for the RV exterior. Designed for wet and dry applications, the sealant of Ziollo would adhere to roofs of recreational vehicles regardless of exterior status. That is why if you opt to choose Flex Repair, there is no need to wait for clear weather to put sealants on your rig. Also, as Ziollo Flex Repair is completely solid, you don’t have to worry about shrinking as time passes by. 

Being non-hazardous, Flex Repair is safe to use and that makes it a popular RV roof caulk among health-conscious enthusiasts of RVing nowadays. The sealant made by Ziollo is free of solvent as well, therefore, it works superbly with paints and seam tapes. For affordability,  Ziollo Flex Repair is inexpensive compared to its contemporaries so its purchase should not ruin your upcoming spendings. Finally, sold in big containers, Flex Repair could comfortably sustain most roof sealing projects that ordinary RVers have to perform. 

As proof of confidence, Ziollo backs its sealant with a lifetime warranty that covers defects. For people that love to have a sound insurance policy while buying things for their recreational vehicles, Flex Repair is the best RV roof sealant


  • Budget-friendly
  • Storage is a breeze 
  • Tip-top container capacity 


  • A couple of products show up already cured 
  • Leveling problem is noted 

4. ToughGrade Self-Leveling RV Lap Sealant

ToughGrade Self-Leveling RV Lap Sealant for Camper Motorhome Rubber Roof
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  • Stain and discoloration-free 
  • Universal compatibility 
  • Color-matched

Why We Love It:

You want to simultaneously secure the delicate roof of your RV against unforgiving outdoor elements and keep it from standing out like a sore thumb? Then it’s suggested that you check out ToughGrade 502-LSW and what it could do. As a color-matched sealant, 502-LSW blends in with the surrounding so its application should cause little change to the overall profile of your rig. Besides that, the UV-stabilized properties of the sealant from ToughGrade allow it to stay free of stain and discoloration.

During application, 502-LSW of ToughGrade automatically self-levels so filling out spaces and cracks would be a piece of cake. The curing time of the ToughGrade sealant is excellent too so you don’t have to wait long for it to dry all the way. Additionally, as the cleanup process of 502-LSW is rather uncomplicated, you likely have no trouble getting rid of excess sealant. if applied properly, ToughGrade 502-LSW keeps dirt build-ups to the minimum which considerably facilitates the cleaning of the roof. 

Released to the market in convenient gun-ready containers, the sealant of ToughGrade is the number one choice for RVers who need to seal their RV roof in a hurry. Furthermore, the outstanding capacity of 502-LSW containers is often more than enough to cover the roof of common recreational vehicles. 


  • Rugged
  • Low-priced
  • Application is hassle-free


  • Customer service should be overhauled 
  • Reports of sealants with odd shades appear every now and then 

5. EternaBond RSW-4-50 RoofSeal Sealant Tape

EternaBond RSW-4-50 RoofSeal Sealant Tape
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  • MicroSealant technology
  • Adhesive with silicone lining 
  • High elongation factor 

Why We Love It:

Since it’s put together with a high elongation factor, RSW-4-50 of EternaBond contracts and expands depending on the situation. Needless to say, once it comes to adaptability, the sealant tape from EternaBond is pretty much unmatched in its class. For full-time enthusiasts of RVing that come across variable weather on the road, RSW-4-50 is undoubtedly the best RV roof sealant available for purchase. With universal compatibility, EternaBond RSW-4-50 could readily adhere to an assortment of materials including masonry, wood, concrete, PVC and others. 

Unlike typical sealants for recreational vehicles, RSW-4-50 only requires basic exterior preparations prior to application so it’s unnecessary to spend hours prepping the roof. In addition, the adhesive side of the EternaBond sealant tape packs a fantastic silicone lining that prevents it from sticking to unwanted surfaces as well. Thus, EternaBond RSW-4-50 gets numerous compliments from owners of recreational vehicles for its handling characteristics. Last but not least, RSW-4-50 is created with MicroSealant technology that contains built-in primers so there is no need for separate applications of primers. 

One roll of the sealant tape made by EternaBond is fifty feet long and four inches wide, hence, RVers rarely have to go through more than a few rolls in order to secure RV roofs. EternaBond RSW-4-50 is sold at a price that RVers could accept so people don’t have to cut back key expenses to grab some rolls. 

This tape looks like it will NEVER separate from my trailer! It is the “stickiest” stuff I’ve ever used. I bought it to anchor the new flexible, thin solar panels I purchased to the roof of my travel trailer. It is easy to cut to size, but be VERY cautious once you begin to peel the backing off the adhesive! Do it a little at a time, and be careful with the alignment. Once it touches anything, it is almost impossible to reposition.

However, now that the panels are in place and anchored, I have no concerns that they will come off. I also covered the wiring to the panels with this stuff…

Shared by Jack L.


  • Mess-free 
  • Stable and sturdy 
  • Adhesion strength is impressive 


  • A number of rolls seem melted on arrival 
  • RVers notice intermittent sticky residues 

Best EPDM Rubber Roof Coatings

6. Proguard F99911 Liquid Roof

Proguard Liquid Roof (F99911)
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  • Seamless 
  • True rubber 
  • Off white

Why We Love It:

Utilizing true rubber, Proguard Liquid Roof (F99911) is able to take on UV rays as well as ozone without breaking down. Moreover, thanks to the marvelous tolerance to heat and cold, Liquid Roof (F99911) could endure temperatures between minus sixty and three hundred degrees Fahrenheit. As a result, regarding the ability to stand up to extreme temperatures, the RV rubber roof sealant made by Proguard is essentially second to none. Liquid Roof (F99911) of Proguard retains its elasticity over time too so it ages exquisitely. 

As the application of the sealant from Proguard resembles that of paint, RVing enthusiasts should have an easy time sealing the roof of their rigs. It’s noteworthy that Liquid Roof (F99911) works with multiple exterior surfaces of RV from galvanized steel to weathered aluminum. Therefore, with Proguard Liquid Roof (F99911), owners of recreational vehicles hardly run into compatibility issues. The stylish off white color of the Proguard sealant definitely adds a nice touch to the roof of most rigs. 

About containers, Liquid Roof (F99911) tends to be distributed in huge cans and people could seal tens of square feet with just a single can. To reassure potential customers, Proguard backs its RV rubber roof coating with a five-year manufacturing warranty that covers defects. That means you have something to count on if you pick up a Proguard Liquid Roof (F99911) and experience problems. 

This appears to be a great product. I won’t know for sure until my travel trailer goes through a few seasons but my first impressions are excellent. It is really messy to work with but you can clean up with paint thinner pretty easily. I worked out of 1 gallon cans of the product. I prepared the RV roof first be repairing any pre-existing damage and making sure all the existing caulking around vents, etc. was in good shape. Any loose caulking was replaced with dicor brand EPDM lap caulking. Note: only use product certified for EPDM rubber on a EPDM roof or you could end up replacing the entire roof material. I then pressure washed the roof and let it dry. Then I prepped my first gallon of liquid roof and covered all areas that I could not roll easily. After that I combined 3 gallons into a 5 gal bucket and mixed. I rolled the coating with a 1/4″ nap roller and applied it as thick as I could with the roller. The finished roof looks great and I’m pretty sure it will last for years. I highly recommend it.

Shared by ShopAllNight


  • Smooth and shiny 
  • Commendable longevity 
  • Intuitive preparation 


  • Kind of expensive 
  • Quality control requires improvements 

7. Heng’s Rubber Roof Coating TG-976

Heng's TG-976
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  • Non-polluting 
  • Non-toxic
  • Impact-resistant 

Why We Love It:

If all you need is a straightforward sealant for RV roofs, you would certainly come to like Heng’s TG-976. Being non-polluting and non-toxic, the roof sealant of Heng’s is very safe to use and environmentally-friendly. Additionally, featuring admirable resistance against mild physical impacts, TG-976 holds up well even if subjected to vibrations day after day. Naturally, RVing enthusiasts that enjoy off-roading and frequently have to navigate rough terrains think highly of Heng’s TG-976 and what it could do. 

Capable of responding to expansions and contractions of the material in a wide range of settings, TG-976 protects the RV roof in a flexible manner. Aside from that, the sealant made by Heng’s adheres to previously-coated surfaces with only a bit of preparation. The application process of TG-976 of Heng’s is also user-friendly and takes a couple of hours to finish. Owing to the generous capacity of the cans that TG-976 comes in, people seldom have to go through many cans to seal roofs of RV. 

Compared to its competitors on the market, Heng’s TG-976 is indeed costly but its values justify the price tag. In terms of post-purchase support, the sealant of Heng’s is backed with a reassuring one-year manufacturer warranty. 


  • Outstanding ruggedness 
  • Cleaning is child’s play 
  • First-class consistency 


  • Steep price 
  • People notice several fluctuations in curing time 

8. Dicor 95D40-35 Rubber Roof

Dicor 95D40-35
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  • Reflective and refractive
  • Puncture-resistant
  • Quick-drying 

Why We Love It:

Made as an all-inclusive product, Dicor 95D40-35 is the favorite roof sealant of RVers who desire comprehensive exterior protection. Possessing unrivaled tensile strength as well as supreme tear resistance, 95D40-35 deal with punctures effectively and efficiently if applied correctly. Furthermore, by integrating an innovative formulation that slows down aging, the Dicor sealant would remain free of decoration for decades. Since it’s reflective and refractive, 95D40-35 of Dicor excels at addressing the effects of UV rays from sunlights too. 

The sealant from Dicor boosts insulation and reduces power consumption, thus, it proves to be particularly well-suited for recreational vehicles with limited battery banks. As 95D40-35 just needs rudimentary care, there is no need to give it unique treatment. Because of that, Dicor 95D40-35 is known as the best RV roof sealant once it comes to ease of maintenance. Lastly, the roof sealant of Dicor dries quickly so enthusiasts of RVing could squeeze its application into travel plans without having to make significant adjustments. 

Using one can of the Dicor roof sealant, it’s possible for RVers to seal more than one hundred square feet of surface on average. Upon purchase, 95D40-35 is accompanied by a wonderful twelve-year manufacturer warranty which provides peace of mind to its users. The color of Dicor 95D40-35 is white so matching it themes of appearances of specific RV roofs is a snap. 


  • Undemanding maintenance
  • Aesthetically pleasing 
  • Simple preparation and application 


  • Pricey 
  • RVers complain about sporadic bubbling 

9. Flex Seal Liquid Rubber in a Can

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  • Weatherproof
  • Non-slippery 
  • Non-flammable

Why We Love It:

You have persisting leaks on the roof of your RV and need something that would put an end to that? In that case, you should consider adding LFSWHTD01BC of Flex Seal to your shortlist. In use, the Flex Seal sealant seeps into cracks and holes of roofing materials to build durable and steady seals. As LFSWHTD01BC keeps out moisture and water, it tackles corrosion well so enthusiasts of RVing don’t have to worry too much about rust. 

When dry, Flex Seal LFSWHTD01BC is non-slippery and that is a big plus if you really like to minimize the odds of accidents. Also, since it’s non-hazardous and non-toxic, LFSWHTD01BC could be safely used around humans, animals and plants. That is why the health-focus sealant of Flex Seal is praised by lots of RVers, novices and veterans alike. Flex Seal LFSWHTD01BC happens to be UV-resistant so sunlight exposure only gives it negligible troubles throughout the year. 

Similar to other sealants of its type, the roof sealant made by Flex Seal is sold in one-gallon cans. With one can of LFSWHTD01BC, you could cover the roof of your rig in quite a few sealant layers. Normally, each layer of Flex Seal LFSWHTD01BC takes around two days to cure totally. 


  • Resilient 
  • Superb handling 
  • Container capacity is decent


  • Some cans arrive busted-up 
  • Flaking is reported from time to time 

10. Proguard Liquid RV Roof EPDM Coating

Liquid Roof RV Roof Repair Liquid EPDM Coatings - 5 Gallon Pail
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  • Applicable to most roofing materials 
  • Undamaged by freezing 
  • Long term flexibility

Why We Love It:

For people that like Proguard Liquid Roof (F99911) but need a product with more capacity and capabilities, Proguard Liquid Roof (F99915) is a good buy. Liquid Roof (F99915) is applicable to most roofing materials found on modern-day recreational vehicles so its compatibility is impressive. Moreover, as the sealant of Proguard is watertight immediately upon application, it could easily take on water ponds and splashes. Proguard Liquid Roof (F99915) is undamaged by freezing too which makes it one of top sealants regarding protection and longevity. 

Usually, one layer of the sealant made by Proguard is adequate to keep the roof of standard recreational vehicles secured. However, in the case that the roof of your rig consists of Alpha rubber, it’s necessary to apply a layer of primer in advance. Beyond that, the preparation for application of Liquid Roof (F99911) is child’s play and takes mere moments to complete. Once cured, Proguard Liquid Roof (F99915) is invulnerable to adverse weather conditions and harsh environments. 

Being sold in five-gallon cans,  Liquid Roof (F99911) permits RVing enthusiasts to seal the roof of their rig without having to change cans often. The cans of the roof sealant from  Proguard boast compact builds as well, therefore, finding space for them in the RV interior is a cinch. 


  • Enduring 
  • Versatile properties 
  • Basic maintenance 


  • Customer service needs some work 
  • Inconstant curing time 

Best Fiberglass RV Roof Coating

11. Dicor RPFRC1 RV Roof Coating

Dicor RPFRC1 Fiberglass RV Roof Coating
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  • Acrylic resin
  • Bright white finish
  • Reflect sun heat 

Why We Love It:

Purposely formulated for fiberglass, Dicor RPFRC1 could protect recreational vehicles with fiberglass roofs from virtually all challenges of the outdoors. Able to adapt to changes in dimensions as the roof expands and contracts, the sealant made by Dicor is flexible. In addition to that, owing to the dry films, RPFRC1 inhibits the growth of mold and mildew recreational vehicles. As a result, Dicor RPFRC1 is the best RV roof coating for RVers who pass through regions with high humidity levels and seek quality moisture protection. 

When applied, RPFRC1 reflects sun heat from the roof and that helps keep temperature in the interior at tolerable levels. Hence, if you apply the sealant from Dicor to the roof of your rig, you don’t have to run air conditioners all day long. RPFRC1 of Dicor hits the market in cans of one gallon and the price of individual cans is also reasonable. So in the case that you opt to use RPFRC1 for your roof sealing project, you only need several cans at most and the total expenditure should be perfectly acceptable. 

In terms of longevity, Dicor RPFRC1 could last through a lot of travel seasons on the road without breaking down. Needless to say, the interval between application of RPFRC1 is long compared to ordinary sealants for roofs of recreational vehicles. 

I redid my entire 2012 Winnebago full fiberglass roof with this product and it came out great. It was a lot of work to properly prepare the roof but in the end my roof looks fantastic, totally sealed, reflects sunlight/heat and is easy clean. I applied 3 coats. There is a YT video that shows an overview on how to prepare & apply this product….

Shared by M. Jordan


  • Save power 
  • Marvelous temperature regulation 
  • Owner’s manual is well-written 


  • Irregular peeling 
  • Particular cans show up spilled 

Best Elastomeric Roof Coating

12. KST COATING KS0063300-20

KST COATING KS0063300-20 White Roof Coat, 4.75 Gallon
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  • Wide temperature tolerance 
  • Soap and water cleanup 
  • Energy saving

Why We Love It:

Consisting of tough acrylic elastomeric resin, Kool Seal KS0063300-20 delivers long-lasting protection to the roof of recreational vehicles. Since it possesses wide temperature tolerance, KS0063300-20 retains its flexibility as the outside temperature deviates from minus ten to one hundred and sixty degrees Fahrenheit. Because of that, the structural integrity of the Kool Seal sealant remains uncompromised as it’s exposed to drastic temperature fluctuations. Besides that, KS0063300-20 of Kool Seal resists both cracking and peeling well so it maintains a sleek appearance over time.

The sealant from Kool Seal quickly adheres to all sorts of materials but it’s best to prime the surface of the roof prior to application. Normally, two layers of KS0063300-20 would be enough but with rough and porous exteriors, more layers may be needed. On average, a layer of Kool Seal KS0063300-20 is going to dry after a couple of hours but you should wait at least a day before actually stepping on it. Furthermore, with just a can of KS0063300-20, enthusiasts of RVing could cover up to one hundred square feet of surface. 

For cleaning, KS0063300-20 of Kool Seal only needs to be cleaned periodically with a combination of soap and warm water. Thus, the sealant made by Kool Seal is applauded by countless elastomeric roof coating reviews.

I have painted numerous RV roofs using the Dicor products, But this is the first time I have used this product. I did use the Dicor rubber roof cleaner and then used the Kool Seal base coat. I used two coats as recommended and was very impressed with the coverage. I cleaned the brush and roller in between coats and was highly impressed with how easily everything cleaned up. The top coat when on just as well as the base coat.

Shared by William E. Allender


  • Swift curing time 
  • Fantastic adhesion 
  • Straightforward storage requirements 


  • Quality control needs to be enhanced 
  • Certain people report issues with sealant consistency 

13. Jetcoat Cool King Waterproof Sealant

Jetcoat Cool King Reflective Acrylic Roof Coating, Waterproof Elastomeric Sealant
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  • 100% acrylic
  • Solid formula 
  • ASTM D6083 compliant

Why We Love It:

As it’s reflective and fortified against UV rays, Jetcoat Cool King handles sunlight exposure and that is why it’s appreciated by summer travelers. By making use of the Jetcoat roof sealant, owners of recreational vehicles have no trouble regulating temperature in the interior.  With Cool King, cutting down power usage of rigs and utility bills is a cakewalk. Jetcoat Cool King is simple to use, hence, RVers scarcely have to postpone trips to get time to apply it. 

Cool King smoothly adheres to various materials like asphalt, wood, concrete and more so its enthusiasts of RVing don’t have to bother with compatibility. Also, the sealant made by Jetcoat levels and fills out hollow spaces on the roof by itself which permits RVers to save time and effort. In most cases, Jetcoat Cool King creates sublime element shields for the roof with two layers but feel free to apply more if you like. For optimal protection, you should give each layer of Cool King six hours to dry. 

Considering the capacity of its can, Cool King of Jetcoat outmatch traditional roof sealants when it comes to cost-value. Aside from that, the sealant from Jetcoat is sold alongside a five-year manufacturer warranty. so if something happens due to defects within the warranty period, you could claim compensation. 


  • Strong 
  • User-friendly application 
  • No-nonsense cleaning 


  • Sealant peeling off is noted 
  • Adhesion strength varies a bit between products 

14. Kool Seal KS0034600-16 Elastomeric

Kool Seal KS0034600-16 KS0034600-16Kool Seal Elastomeric Gray Base Roof Coating
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  • Flexible 
  • No chalk, crack and peel 
  • Enhanced reflectivity

Why We Love It:

With the presence of acrylic, Kool Seal KS0034600-16 features top-notch adhesion to the average roof surfaces of recreational vehicles. Moreover, packing enhanced reflectivity, KS0034600-16 manages to reduce damages caused by UV rays in sunlight and keeps the interior cool. The sealant made by Kool Seal resists moisture superbly too so RVing enthusiasts don’t have to worry too much about corrosion on the road. Therefore, for casual owners of recreational vehicles, Kool Seal KS0034600-16 is a robust roof sealant. 

About application, the sealant from Kool Seal could be applied with common tools and it dries in a few hours. Since KS0034600-16 automatically moves into cracks in the exterior of the RV roof, filling holes with it is a snap. In general, two layers of Kool Seal KS0034600-16 tend to be considered as sufficient for the roofs of typical rigs. That being said, regardless of layers applied, it’s necessary to wait for one layer to dry before adding another. 

Assuming that the application proceeds without issues and the layers dry properly, KS0034600-16 of Kool Seal would keep the roof safe for a long time. Interestingly, the Kool Seal sealant expands and contracts just like roofing materials so the level of protection is practically constant as the surrounding condition changes. 


  • Easy to apply 
  • Splendid coverage 
  • Maintenance is no-sweat 


  • May be stained by vegetation (leaves, branches and alike)
  • A number of users complain about getting leaked cans 

15. Rust-Oleum 301904 Elastomeric

Rust-Oleum 301904 7 Year Elastomeric Roof Coating white gal
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  • Resistant to weathering 
  • Decrease dirt pick-ups 
  • White 

Why We Love It:

While Rust-Oleum 301904 indeed lacks exceptional strengths compared to its market competitors, it nonetheless gives a good account of itself in an assortment of arrangements. Waterproof and weatherproof, the sealant of Rust-Oleum columns withstand everything the outdoor throws at it and keep the roof of recreational vehicles well-secured. Additionally, since 301904 is capable of decreasing dirt pick-ups, it’s highly sought after by RVers who like to spend more time enjoying themselves and less time cleaning their rigs. Last but not least, with universal compatibility, Rust-Oleum 301904 rapidly adheres to lots of surfaces. 

Prior to application, it’s imperative that 301904 is mixed in a mechanical mixer until the sealant becomes smooth and consistent. When the mixing completes, it’s possible to use multiple tools to apply Rust-Oleum 301904 to roof exteriors of RV. Boasting high reflectivity when dried, the sealant made by Rust-Oleum would repel UV rays and facilitate regulation of temperature. With 301904, owners of recreational vehicles should be able to reduce power consumption and save some bucks for more pressing needs.

Available in cans of variable capacities, the sealant from Rust-Oleum could match the sealing requirements of many recreational vehicles. Each can of 301904 is also backed with a seven-year manufacturer warranty and that speaks volumes about its outstanding longevity. 


  • Competitive price 
  • Excellent ruggedness 
  • Cleaning is a cinch 


  • Delivery service is mediocre 
  • Coverage varies from case to case 

How to Choose The Best RV Roof Sealants & Coatings

RVing enthusiasts have numerous opinions about what could be called the best RV roof sealant but if you don’t like to spend money on less than ideal products, pay special attention to these aspects 


The roof of recreational vehicles is made from multiple materials so while assessing available sealants, it’s strongly recommended that you take properties into account. The last thing you want to do is to empty on your wallet on a product that is incompatible with the roof of your rig. Usually, you could determine the suitability of a product by checking out its usage description. Still, just in case, you should read some customer reviews and see what they say about particular sealants in use. 

Ease Of Application 

As an RVer, you would have to deal with many tasks which is why you don’t need sealants with intensive and draw-out applications. So as you seek the best RV roof sealant for your rig, it’s important that you remember to give ease of application some thoughts. Until you know for sure that you have the skills and tools to handle the application of the chosen product, avoid committing to a purchase. Of course, hiring someone to apply the sealant to the roof in your stead is always an option but it’s going to cost you. 

Curing Time

The curing time is often affected by an assortment of factors from temperature to moisture and changes substantially between sealants. To determine the appropriate curing time for the sealant of your RV roof, you should think about your travel schedule. If you plan to head out soon, you must prioritize products with quick curing times. On the other hand, in the case that you have no intention of hitting the road for the time being, you could choose standard sealants. 


Even with small rigs, it may still take large amounts of sealant to properly cover the roof and that means capacity is an important consideration. Having to repeatedly open up new containers of sealants is tedious and leads to a series of interruptions so it’s best to be thorough. Use the measurement of the roof of your rig as references and then calculate how much sealant is needed to shield it all the way. It’s worth pointing out that a number of products on the market nowadays come in containers of variable capacities. 


Sealants for the roof of recreational vehicles come at a lot of price points, hence, you would have plenty of choices regardless of your budget. That being said, since price is subtly linked to quality, you need to be cautious. Generally, there is no need to commit big bucks to roof sealant if you don’t have any sophisticated demands. Also, it’s ill-advised to pick up dirt-cheap products hoping to save some bucks as they rarely hold together very well for long. 

How To Apply Roof Sealant?

Once it comes to applications of roof sealants, RVers have to adhere to the requirements set out by the manufacturers. So to get the most out of the sealant you bought, you should take a close look at the accompanying owner’s manual and learn what needs to be done. 

In any case, the application of usual sealants for roofs of recreational vehicles tend to consists of the following step

Step 1: Prepare the roof exterior

Over time, many things could accumulate on the roof of your rig which may interfere with the application of sealant. Because of that, it’s essential that you clean the roof thoroughly before applying sealant. In order to avoid unexpected chemical reactions, you should refrain from using cleaning solutions here. 

Note: For a couple of products, the preparation process also involves priming the roof surface. 

Step 2: Apply layers of sealant 

A number of RV roof sealants on the market could be applied using various methods while others require particular tools. You have to think about the measurements of your rig and characteristics of the sealant you use then decide accordingly. As a precaution, the application of roof sealants should take place in well-ventilated areas. 

Step 3: Allow sealant layers to dry 

The drying time differs significantly between roof sealants for recreational vehicles and conditions of the surrounding (temperature, humidity, sunlight, … ) play a big part as well. Normally, sealants for RV roofs would dry after six hours and cure after one day.

Top RV Roof Sealant Brands

roof coating for RV

If you happen to come across a trailer roof sealant that meets your requirements then feel free to grab it without worrying about its brand. Still, if you value reputability, it’s suggested that you keep the names listed down below in mind while shopping 


Being one of the leading manufacturers of products for RV, Dicor is the go-to brand for those that desire solid roof coating for RV. If you like to keep the roof of your rig in top shape for years to come, buy from Dicor. 


With the ability to provide sealants that quickly fix roof leaks and prevent damages in the future, EternaBond is held in high esteem by countless RVers from novices to veterans. Moreover, products of EternaBond reach the market at reasonable prices so they suit the wallet of ordinary enthusiasts of RVing. 

Flex Seal

As a long-established brand with significant experience, Flex Seal knows how to create sealants that meet expectations of people. Unsurprisingly, Flex Seal is quite popular among owners of recreational vehicles that care about practicality. 

Liquid Rubber 

Thanks to the incorporation of innovations, Liquid Rubber is capable of delivering robust roof sealants that could take on challenges of RVing with relative ease. As a result, for full-time RVing, Liquid Rubber products often get the top spots in RV roof coating reviews

FAQs About Sealant For Roof Of RV 

How many layers of roof sealants should I apply? 

The number of sealant layers to apply to RV roof varies from case to case. With urethane and acrylic sealants, you have to apply a couple of layers in addition to primer for optimal protection. In the case that you use silicone sealants, a single layer is adequate and there is no need for primer. 

What is the average lifespan of roof sealants once applied? 

The longevity of sealants is influenced by all sorts of things but if you apply them properly, the layers should hold together for one year. That is why it’s a good idea to evaluate and re-apply the roof sealants of your rig annually. 

Is it wise to clean surfaces that have roof sealants with cleaning solutions? 

Unless you know the result, you should keep roof sealants of your RV from coming in touch with cleaning solutions. Several chemicals in such solutions may react with the ingredients of sealants and compromise the structural integrity of sealant layers. In order to clean surfaces that have roof sealants, it’s typically best to stick to gentle streams of water. 

Where could I get roof sealants for recreational vehicles? 

You should be able to stock up on sealants just by paying visits to stores that sell RV-oriented products. Nevertheless, if you don’t like to go out of your way to buy sealants, it’s possible to order some from online retailers such as Amazon, eBay, Camping World, …

You can also find our guides on how to choose the best RV wax, best wheel bearing grease for travel trailers, best RV wash brush with detailed reviews in RV Maintenance category. In these buying guides, we only include and recommend the best products with the highest ratings among highly sold products on the market.

About Peter Wade

Peter Wade is a co-ordinator and writer at His hobbies are coffee, RV camping and photography. He now enjoys exploring the U.S. by RV with his two dogs. After obtaining a MA degree in Public Relations and Journalism, he had 8 years of experience working for the R&D Department of Outdoorsy. Peter provides a unique look and insightful knowledge about the RV lifestyle, and fills his blog with everything from RV camping guides to reviews about necessary RV accessories. If you are an RV enthusiast and want to get the most-updated trends of the RV industry, Peter’s articles are the must-visit contents.

2 thoughts on “Best RV Roof Sealants & Coatings: Keeping Your RV Roof in Tip-top Shape”

  1. 4 packs of Dicor were enough to replace 3 vent stacks, the refrigerator vent, shower skylight and exhaust fan on my rubber RV roof. This stuff is easy to use for doing any repairs to your RV roof. It is not a flow and settle out like water but is sort of like a runny putty. After the first day of putting this on it looked like it was making my rubber RV roof bubble up.

  2. Most excellent product!!! Used this Proguard F99911 Liquid Roof on some EPDM sheeting that was showing a lot of black color through the material. I have used many products over the years that made claims but this is truly a product that meets its claims. I used the systems that most suggested of brushing around the edges and roof protrusions then pouring out the product in an area then squeegee then roll with a low nap roller, it works 100% as an EPDM rubber coating which is capable of covering an area of around 42 to 45 square feet. In addition, it is capable of withstanding a wide range of temperatures – from 6o degrees to 300 degrees Fahrenheit.


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