Best RV Sealants of 2025

"I really like this self-leveling sealant. It goes on easily and works great. I am well pleased with this product."

"After noticing some cracks in the adhesive joints during my annual resealing check on my RV, I used this product. It was really easy and did self-level. The finish turned out better than when my RV was new. A great product!"

"I put a StarLink on the roof of my RV and used this sealant to bond the mounting bracket and seal the hole for the data cable. With rain and traveling, it worked out very well."

"I found this product to be fantastic for resealing my sister's RV. After some time, it has proven to withstand all types of weather—snow, rain, and ice. The price was also very reasonable, much less than local stores. I would definitely recommend it!"

"Having used Dicor's self-leveling sealant on my trailer for six years, I can confidently say it is easy to apply and gives me peace of mind against leaks. I usually apply it over existing sealant after cleaning the roof, and it covers well without spreading too much."

"I purchased this for my 2007 Bigfoot trailer to reseal the vent and roof cutouts. It was much simpler than traditional caulking. The self-leveling quality is impressive, and after cleaning the roof and applying it, it has firmed up nicely. I look forward to testing its durability during the rainy season!"

"This product is much better than silicone caulking. It adheres well and lasts longer. I appreciate that it's paintable and creates a waterproof seal. The only drawback is its application; it's a bit difficult to smooth out, so I made sure to keep my caulking gun moving steadily. Although it's pricier, I find it worth the investment."

"I used this sealant for the first time to caulk my camper. As someone who doesn’t usually enjoy this type of work, I found it fairly easy to apply. The clear finish is a plus, and I love that I can apply it over itself without removing old caulk. It looks neat, which is very important to me!"

"I needed to reseal my trailer and this product was highly recommended. It performed really well and is quite flexible. I will definitely use this again if I need to reseal my trailer in the future. I'm impressed!"

"I found it easy to use and it gets the job done. I'm just hoping for the best regarding its longevity."

"I used this sealant to reseal the vents and seams on my motorhome, and it flowed well, making it quite easy to apply."

"While the product listing doesn't mention the sealant's composition, I believe it's polyether, which is a good UV resistant sealant. One tube was sufficient to reseal the roof edge on one side of my RPOD. I made sure to clean off the old butyl sealant and follow the instructions by wiping with acetone. I used the remaining tube to cover some cracked areas, so time will tell how effective that will be."

"As someone with over a decade of RVing experience, I can confidently say that Dicor is the best choice for sealing an RV roof. While it does develop some pitting over a couple of years, it's easily fixable with another application, which I recommend doing annually. It retains its flexibility even after years of use."

"I used this sealant on the sides of my Rialta RV for its annual seam resealing. It really stays in place without sagging on vertical surfaces. For the roof, I prefer the self-leveling version."

"For my 1995 RoadTrek RV repair, I applied this product to seal the roof trim and window gaps. It does remain tacky for a while, so I recommend avoiding contact during that time, but it definitely prevents any water leaks. I wouldn't suggest skimping on repairs with silicone or regular caulking!"

"This worked perfectly for my three ceiling vents. I had two left for the edges of my 19-foot trailer."

"I find this Kohree sealant to be acceptable, but I prefer my usual Dicor brand for better leveling. The price is similar, so there's no real value for me."

"This sealant levels nicely and seals beautifully, but once it's dried, it's impossible to remove from the rubber membrane. I recommend applying it only over old sealant."

"I had a missing seal on my slide out. This product worked perfectly for the job and dried quickly. I would definitely recommend it!"

"I needed a quick seal before heading to the campground with rain and snow expected. It worked great and cured quickly, even in cooler temperatures."

"This sealant is fantastic for sealing vertical seams and trim. It stays in place and is easy to mold with my finger."

"I had to quickly repair my travel trailer's roof membrane, which was beginning to separate. This sealant is truly self-leveling and creates a smooth finish without any unsightly gobs. Its adhesive capability is impressive; it not only provided a great waterproof seal but also secured the membrane to the underlayment, preventing further damage. I believe the two-pack is essential—one for immediate repairs and the other as insurance for travel. I've learned that getting RV repairs while on the road can be tough!"

"This self-leveling sealant performs well when sealing and bonding cracks. It fits any standard-sized caulk gun perfectly. After cutting off the end of the tube, I found the consistency to be just right—not too runny or too thick. I've used it for sealing around vents and fittings on my roof, and it even worked for minor home improvement projects. With one tube, I managed to seal the seams and corners of a 10x10 room for painting. When applied correctly and with excess cleaned up, it leaves a clean caulk line!"

"My RV is 18 years old, and the roof sealant around various fittings was loosening. After cleaning everything off, I resealed it with this product, and so far, I’ve had no issues at all!"

"This product did the job well for re-sealing. After it cured, there’s no chance of water getting through. The adhesion is impressive, and it feels really stuck on there!"

"I found the viscosity light and it spread quickly compared to other brands I’ve used. It levels and dispenses well, and my trailer roof is now sealed!"

"Unfortunately, I had a terrible experience with the WELLUCK product. It’s the worst I've used and I’m facing extra costs and time to fix the issues it caused."

"This product does exactly what I needed it to do, and I found it very easy to apply."

"I bought this sealant for my camper seams; it’s a good product and I’m pleased with the results."

"After using it, I can say it's a solid option and handled the job well, though I prefer Kohree for its leveling."