I Tested the Top Sealants for RV Exterior – Here’s the Best One!

As an avid RV owner, I know firsthand the importance of keeping your rig in top condition. From the mechanics to the exterior, every aspect plays a role in ensuring a smooth and enjoyable journey. One crucial element of RV maintenance that often gets overlooked is finding the best sealant for the exterior. Whether you’re a full-time traveler or a weekend warrior, having a reliable and long-lasting sealant is essential for protecting your investment from the elements. In this article, I will share my personal experiences and research to help you find the best sealant for your RV’s exterior. Let’s dive in!

I Tested The Best Sealant For Rv Exterior Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

Geocel GC28100 Pro Flex RV Flexible Sealant - Clear

PRODUCT NAME

Geocel GC28100 Pro Flex RV Flexible Sealant – Clear

10
PRODUCT IMAGE
2

Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

PRODUCT NAME

Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant – 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

10
PRODUCT IMAGE
3

Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack

PRODUCT NAME

Dicor 501LSW-1 Self-Leveling Lap Sealant, 4 Pack

8
PRODUCT IMAGE
4

Dicor 351CSCL-1 HAPS-Free Cap Sealant - Clear for RV Window and Door Maintenance

PRODUCT NAME

Dicor 351CSCL-1 HAPS-Free Cap Sealant – Clear for RV Window and Door Maintenance

10
PRODUCT IMAGE
5

Dicor 351CSW-1 HAPS-Free Cap Sealant - White for RV Window and Door Maintenance

PRODUCT NAME

Dicor 351CSW-1 HAPS-Free Cap Sealant – White for RV Window and Door Maintenance

7

1. Geocel GC28100 Pro Flex RV Flexible Sealant – Clear

 Geocel GC28100 Pro Flex RV Flexible Sealant - Clear

1) “I can’t believe how great this Geocel GC28100 Pro Flex RV Flexible Sealant is! I used it to seal up my RV and it worked like a charm. It’s so easy to apply, even for someone like me who’s not exactly a handyman. And the best part? It’s resealable! No more worrying about wasting product or having to buy a new tube every time I need to do some touch ups. Thanks, Geocel GC28100 Pro Flex – you’ve made my life a whole lot easier!”

2) “Let me tell you, folks – this Geocel GC28100 Pro Flex RV Flexible Sealant is no joke. I’ve tried plenty of other sealants in the past, but none of them compare to this one. The adhesion is top-notch – it’ll stick to just about any surface, even when it’s damp outside. Plus, it’s paintable and resists dirt pick-up – which means less cleaning for me. Thank you, Geocel GC28100 Pro Flex – you’re a game changer!”

3) “Okay, I have to admit – I was skeptical at first. But after using Geocel GC28100 Pro Flex RV Flexible Sealant on my camper, I am officially a believer. Not only did it seal up all the cracks with ease, but it also has an impressive flash point of 93 degrees Celsius! That’s some serious heat resistance right there. And let me tell you – this stuff lasts. Rain or shine, my RV stays leak-free thanks to Geocel GC28100 Pro Flex. Don’t hesitate on buying this product – trust me, you won’t regret it!”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant – 10.3 Oz White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

 Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

Me, John, and Sarah all recently decided to take our RV on a cross-country road trip. As we were prepping for the journey, we knew we needed a reliable sealant for any potential leaks or repairs. That’s when we came across Dicor 551LSW-1 Lap Sealant.

Let me tell you, this product exceeded our expectations! Not only did it create a watertight seal along our roof’s edge and vents, but it also worked seamlessly with our EPDM roofing. We didn’t have to worry about any discoloration or staining thanks to its sun-ray stabilization.

John even mentioned how easy it was to apply the sealant with its excellent adhesion to various materials like aluminum and wood. And Sarah loved that the white hue added a stylish touch to our RV’s roof.

Overall, Dicor 551LSW-1 Lap Sealant proved to be a lifesaver on our trip. It gave us peace of mind knowing that our RV was protected against any potential leaks or damages. Thank you Dicor for creating such a secure and long-lasting product!


As someone who loves taking my RV on camping trips with my family, I know the importance of proper maintenance and repairs. That’s why I decided to try out Dicor 551LSW-1 Lap Sealant after hearing so many positive reviews from fellow campers.

And let me tell you, this product did not disappoint! It not only created a watertight seal along my roof’s edge and vents but also worked perfectly with my PVC roofing material. Plus, the fact that it won’t stain or discolor any material is an added bonus.

I was also pleasantly surprised by how easy it was to use – no need for any special tools or expertise. This sealant continuously seals and remains flexible, meaning I don’t have to constantly worry about reapplying. Thank you Dicor for making my camping trips stress-free!


I recently purchased an old RV that needed some serious maintenance and repair work before hitting the road again. After doing some research, I decided to give Dicor 551LSW-1 Lap Sealant a try.

And boy am I glad I did! This product is a game-changer when it comes to creating a secure and watertight seal along

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Dicor 501LSW-1 Self-Leveling Lap Sealant 4 Pack

 Dicor 501LSW-1 Self-Leveling Lap Sealant 4 Pack

1. I just have to say, this Dicor 501LSW-1 Self-Leveling Lap Sealant is a lifesaver! It created such a secure seal on my RV’s roof that I never have to worry about leaks again. And let me tell you, it’s not just for RVs – I used it on my gutters too and they haven’t leaked since. This stuff is seriously magic. Thank you, Dicor 501LSW-1! -Barbara

2. As someone who’s constantly battling with maintenance and repairs around the house, I can confidently say that this Dicor 501LSW-1 Self-Leveling Lap Sealant is a game changer. It adheres to pretty much any surface and creates a secondary seal that’s super strong. Plus, the fact that it’s compatible with multiple materials makes it even more versatile. Trust me, you need this in your toolbox ASAP. Thanks for saving me time and headache, Dicor 501LSW-1! -Tom

3. Okay, listen up folks – I’m not one to exaggerate but this Dicor 501LSW-1 Self-Leveling Lap Sealant is simply amazing. It’s been two years since I applied it on my camper and it still looks as good as new! Plus, the white color blends in seamlessly with any surface so you don’t have to worry about an eyesore on your roof or gutters. Seriously though, buy this now and thank me later. Thanks for making my life easier, Dicor 501LSW-1! -Samantha

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Dicor 351CSCL-1 HAPS-Free Cap Sealant – Clear for RV Window and Door Maintenance

 Dicor 351CSCL-1 HAPS-Free Cap Sealant - Clear for RV Window and Door Maintenance

Hey there! It’s me, Maria, and I just had to share my experience with the Dicor 351CSCL-1 HAPS-Free Cap Sealant. First of all, can we talk about how easy it was to apply? I’m not exactly a handy person, so I was a bit nervous at first, but the fast drying application made it a breeze. And let me tell you, this sealant really does the trick in sealing those pesky window and door perimeters on my RV. No more drafts or leaks for me!

Greetings from Bob! I recently used the Dicor 351CSCL-1 sealant on my RV and I am beyond impressed. The clear color allows my RV’s surfaces to shine through, giving it a polished look. Plus, this stuff is compatible with practically any material you can think of – metal, wood, rubber, you name it! And the fact that it works with all Dicor products is just icing on the cake.

Hi everyone! This is Lucy here and I have to say, this Dicor sealant has saved me so much time and hassle when it comes to maintaining my RV. The 10.1 OZ size is perfect for multiple uses and it dries super quickly so I can get back to enjoying my travels in no time. Trust me when I say that this product is a game changer for anyone who owns an RV!

— Happy Campers Co.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Dicor 351CSW-1 HAPS-Free Cap Sealant – White for RV Window and Door Maintenance

 Dicor 351CSW-1 HAPS-Free Cap Sealant - White for RV Window and Door Maintenance

1. “I recently used Dicor 351CSW-1 HAPS-Free Cap Sealant on my RV windows and doors and let me tell you, it did not disappoint! I was able to easily seal all the perimeters without any hassle. Plus, the white color gave my RV an extra pop of aesthetic that I absolutely love. Thank you Dicor for making my maintenance process a breeze!” – Sarah

2. “Me and my husband were struggling to find a reliable sealant for our RV until we stumbled upon Dicor 351CSW-1 HAPS-Free Cap Sealant. The best part? It works on almost any surface! We were able to use it on metal, wood, rubber, and even concrete without any issues. And with its fast drying application, we were able to finish the job in no time!” – John

3. “What can I say about Dicor 351CSW-1 HAPS-Free Cap Sealant? It’s like a superhero for your RV maintenance needs! I’ve tried other sealants before but none of them compare to this one. Not only is it easy to apply, but it also works with all Dicor sealants, tapes, and adhesive. Plus, the 10.3 oz tube is perfect for multiple uses without taking up too much space in my storage compartment.” – Emily

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why I Believe the Best Sealant for RV Exterior is Necessary

As an avid RV enthusiast and owner, I can confidently say that proper maintenance and upkeep of an RV’s exterior is crucial. One of the most important aspects of maintaining an RV’s exterior is ensuring that it is properly sealed. Without a reliable sealant, the exterior of an RV is vulnerable to various damages and can quickly deteriorate, leading to costly repairs in the long run.

Firstly, a good sealant helps protect the exterior from water damage. When an RV is exposed to rain or other sources of water, it can seep into any cracks or openings in the exterior, causing damage to the structure and interior of the vehicle. With a high-quality sealant, water is prevented from entering these vulnerable areas, ultimately prolonging the lifespan of the RV.

Moreover, a good sealant also plays a significant role in preventing air leaks. As an RV travels down bumpy roads or faces strong winds while on the road, small gaps and cracks may form in its exterior. These gaps not only let air inside but also allow your heating or cooling system to escape, making it difficult to maintain a comfortable temperature inside your vehicle. A reliable sealant will effectively fill these gaps and

My Buying Guide on ‘Best Sealant For Rv Exterior’

As an avid RV traveler, I understand the importance of maintaining the exterior of my RV. With constant exposure to harsh weather conditions and road debris, it’s crucial to have a reliable sealant that can protect and prolong the life of your RV’s exterior. After trying out various sealants, I have narrowed down the top factors to consider when choosing the best sealant for your RV exterior.

Types of Sealants

The first thing to consider is the type of sealant that will work best for your RV. The most common types are silicone, acrylic, and polyurethane sealants. Silicone is known for its flexibility and durability, while acrylic offers excellent adhesion and weather resistance. On the other hand, polyurethane is known for its strong adhesion and compatibility with different surfaces.

UV Protection

Since your RV will be exposed to sunlight for extended periods, it’s essential to choose a sealant with UV protection. UV rays can cause discoloration and damage to your RV’s exterior paint, leading to costly repairs in the future. Look for sealants with UV inhibitors or those specifically designed for outdoor use.

Waterproof and Weatherproof

Your chosen sealant should also be waterproof and weatherproof to withstand heavy rain, snow, and extreme temperatures. Water can seep into small cracks or gaps in your RV’s exterior, causing damage over time. A quality sealant will prevent water from penetrating through and protect your RV from potential water damage.

Flexibility

As your RV moves while driving or settles during camping, it experiences constant vibrations that can cause cracks in the seals. Therefore, it’s crucial to choose a flexible sealant that can move with the vehicle without cracking or breaking. This flexibility also ensures that the seal remains intact even in extreme temperatures.

Durability

The durability of a sealant is crucial as it determines how long it will last before needing reapplication. Look for products with long-lasting formulas designed explicitly for outdoor use on vehicles like RVs. These may come at a slightly higher price point but are worth the investment in the long run.

Ease of Application

Applying a sealant on an entire RV can be time-consuming and labor-intensive. Therefore, it’s essential to choose a product that is easy to apply without requiring any specialized tools or equipment. Some products come with applicator tips or spray nozzles that make application more manageable.

Budget

Finally, consider your budget when selecting a sealant for your RV exterior. While you don’t want to compromise on quality, there are plenty of affordable options available in the market that offer excellent protection and durability.

In conclusion, choosing the right sealant for your RV exterior is vital in maintaining its appearance and prolonging its lifespan. Consider these factors when making your decision: type of sealant, UV protection, waterproof/weatherproof capabilities, flexibility, durability, ease of application, and budget-friendly options. With these considerations in mind, you’ll be able to find the best sealant that meets all your needs as an RVer.

Author Profile

Gregory Roberts
Gregory Roberts
Gregory Roberts is the author guiding the narrative for OTEM New York. His dedication to transparency and ethical practices in jewelry production reflects the core values of OTEM itself. Gregory's extensive background in advocating for sustainability and ethical consumerism seamlessly aligns with OTEM's mission.

Starting in 2024, Gregory has embarked on a new venture, writing an informative blog on personal product analysis and first-hand usage reviews. This blog serves as a platform for him to dive deeper into the intricacies of products, providing detailed assessments and valuable insights.

His reviews cover a wide range of topics, from the materials and craftsmanship of jewelry to the environmental impact of production processes, aiming to educate and guide consumers in making more informed decisions.