10 Best RV Roof Sealants in 2023 – Reviews & Top Picks

Nothing ruins a camping trip or holiday quicker than a leaking RV roof. Sealing maintenance should be done regularly to prevent a leaking roof. The type of roof and how good the sealant you use is will determine how often it should be done.

There are many different products on the market and reading through all the reviews to determine the best product can be exhausting. So, we’ve gone ahead and done that for you.

We’ve gathered ten of the best RV roof sealants on the market in one place and written detailed reviews on each of them. In addition to these reviews, we’ve written a short buying guide to assist you in picking the best sealant for your needs.

A Glance at Our Top Picks (2023 Update)

The 10 Best RV Roof Sealants

1. Dicor 501LSD-1 – Best Overall

It’s no wonder that a Dicor product gets the best overall RV roof sealant pick. They have many products that position them as industry experts regarding roof sealing. For minor repairs, purchase this one by the tube. But if you’ve got a big project, it’s available in larger quantities for a slightly reduced price.

This is our best overall choice because it’s self-leveling, making for a nice finish when sealing. It’s also compatible with several different materials, ensuring a good match for most projects. All this while remaining at a reasonable price.

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2. Dicor 551LSW – Best Value

At a slightly better price, this Dicor sealant wins in the best RV roof sealant for the money category. Instead of being a self-leveling formula, this one is non-sagging. This makes it great for horizontal applications like windows and doors in addition to your roof.

If the limited color options don’t scare you off and you’re looking for something a little more multi-purpose, this tube of sealant is a great option. It goes on easy and stays flexible, so you don’t have to worry about it hardening and cracking.

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3. Ziollo Silicone RV Roof Sealant – Premium Choice

This pail of silicone RV roof sealant is worth the money if you’re doing more than sealing laps on the roof. It comes in one or five-gallon pails for major repairs or retrofits. It’s also compatible with most roof materials so you can use it for repairs on the home and the RV.

After rolling it on, the sealant remains flexible and breathable. It’s also compatible with other products like sealing tape and lap sealants. So, you can double up protection on the high-risk areas of your roof. If you don’t mind the price and you’re looking for more than a couple of caulking tubes of sealant, this is the RV roof sealant for you.

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4. Eternabond Sealant and Leak Repair Tape

Tape isn’t typically the first thing someone thinks about when looking for a sealant. But if you’re looking for a quick DIY sealing solution, this tape by Eternabond is a great choice. It’s compatible with most roof materials.

However, silicone is one thing that it won’t stick to. So, if you’ve previously sealed the RV roof with a silicone-based product, this tape won’t be ideal. Otherwise, you can apply it in temperatures as low as -20° F, and it’s designed to flex and contract in all weather conditions so that you can rely on its sealing properties.

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5. Dicor EPDM Rubber Roof Coating

A major benefit to this EPDM RV roof coating is its UV protection. By putting this rubberized coating over the EPDM rubber roof, you’re potentially saving yourself thousands of dollars in replacing the roof when the sun destroys it.

This product offers great, long-term protection. However, it’s a bit on the pricey side—especially if you’re doing a large RV as it needs several coats. In addition to the coats, it also requires a special cleaner to promote proper adhesion.

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6. Eternabond Sealant Tape

The thing about a tape sealant is that it’s not typically the most aesthetically pleasing fix compared to a roll-on or caulking sealant. If you’re sealing laps or making small repairs, this tape is a good option because it’s narrower than the previous choice on our list.

It still suffers from the same downfalls, so if your RV roof was previously sealed with silicone, then this tape won’t stick. Several customers who’ve used this tape rave about its strength. It has even been used to repair damaged RV awnings. Even if it’s only as a backup, this sealant tape is a great product to have in your kit.

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7. Geocel Flexible Sealant

As long as you’re not looking for a sealant with a lot of multi-purpose functions, this flexible sealant by Geocel is a decent choice. It’s inexpensive and suitable for sealing joints and other problem areas on plastic or rubber roofs.

Because it’s not silicone-based, you can apply it over itself. So, there’s no need to clean off the old sealant for repeat repairs. Plus, it can be painted and doesn’t collect a lot of dirt like some caulking sealants are prone to doing. On the flip side, being non-silicone-based means that it won’t have the longevity of a silicone sealant.

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8. Premier Pro Self-Leveling Lap Sealant

If you’re looking for a multi-use sealant above all else, this self-leveling sealant by Premier Pro is worth checking out. It comes in a resealable pouch and doesn’t need any special tools for application. It’s compatible with many different roofing materials and applications.

The only problem with products that boast such multi-use characteristics is that they are often not amazing at any single application. And it is contractor grade, so if you’re not looking for a primary RV roof sealant, this one might do the trick.

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9. Gorilla Rubberized Sealant Spray

You may recognize the Gorilla brand as the creators of tough glue and tape, but they also make a nifty rubberized sealant spray. The sealant is compatible with most roofing materials. However, it’s only suitable for smaller repairs. It would not be economically friendly to attempt to seal an entire roof.

Depending on how often you use it, you can purchase it in larger packs for a slight discount. But overall, it’s reasonably priced for what you’re getting.

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10. Flex Seal Sealing Spray

To round out our list, we’ve got one more spray-on sealant. Like the Gorilla sealant, this one isn’t suitable for large applications. You may recognize the Flex Seal brand from commercials on TV. With this spray-on sealant, there are a lot of mixed reviews regarding what it works on.

If you’re not sealing something critical and are looking for a quick repair, this Flex Seal sealant is worth considering because the people who did like it rave about how well it works and how nice it looks for a spray-on sealant.

Buyer’s Guide: How to Pick the Best RV Roof Sealants

It may seem redundant to seal an RV roof because the manufacturer seals it from the factory. The fact is, the sealing wears off, and leaks happen. If you make inspecting and fixing the sealant on your RV roof a regular practice, it’ll pay off in the long run.

Your RV roof will last longer without major repairs or replacement, and your RV will be more energy efficient in regards to heating and cooling. Not to mention by preventing leaks, you’re potentially preventing major damage to the interior.

Why Seal an RV Roof?

Choosing the best sealant for your RV’s roof can be a bit overwhelming. Here are a couple of things to consider before making the purchase.

Type of Roof

When buying a sealant, you need to ensure the sealant is compatible with the roof material. If you don’t, the seal will not last, and you’ll waste your time and money.

Today, the most common materials used in RV roofs are fiberglass, aluminum, and rubber. Rubber roofs can be either by TPO or EPDM—and some sealants are only compatible with one or the other.

Sealing Frequency

An RV roof can last for several years with minimal maintenance and resealing if you start with a high-quality sealant designed for the roof. If you don’t, you could end up redoing it way sooner than you should have needed to.

In addition, a good UV resistance is an important factor in how often you need to reseal. The sealant you choose is often the only protection your RV roof receives against UV rays that will eventually destroy the roof.

Easy Application

Each sealant comes with pros and cons for its application. A caulking gun typically takes a steady hand for a nice finish, but it will give you the best secondary sealing because you can get the sealant where it needs to be. A roll-on is ideal for whole roof applications but is less precise.

Conclusion

Two Dicor products made it on our top three product reviews—whether you’re looking for the best overall or the best mix of value and performance, 501LSD-1 and 551LSW are your two best bets.

Now, if you’re not concerned about the money, the silicone RV roof sealant by Ziollo is a great option if you’re redoing an entire RV roof.

We hope these reviews and buying guide have helped you pick the best RV roof sealant for your needs.

See also: EPDM Roofing vs. TPO — Pros, Cons, and Verdict

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Featured Image Credit: Zohair Mirza, Unsplash