The 10 Best RV Roof Sealants of 2020

Jerry Wilson
Written by
Last update:

Popular among RVers as the necessary topper to their top tier motorhomes, a roof sealant is the secret to sealing and protecting the entire roof of your tent camper, motorhome, or trailer in one go.

By applying a light sealant top coat to your trailer after cleaning off all previous contaminants, you’ll be providing exceptional protection from the elements and prolonging the lifespan of your RV roof.

You want to use the best roof sealant, so you’re in the right place.

Here are some brands I rate based on their performance and price.

NameCategoryProduct
EternaBond RSW-4-50 RoofSeal Sealant TapeBest Overall
EternaBond RSW-4-50 RoofSeal Sealant Tape
Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. TubeBudget Pick
Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. Tube
Liquid Roof Rv Roof Coating & Repair 4 Gallon PailUpgrade Pick
Liquid Roof Rv Roof Coating & Repair 4 Gallon Pail

1. EternaBond RSW-4-50 RoofSeal Sealant Tape

Our rating: 9 / 10


EternaBond RSW-4-50 RoofSeal Sealant Tape

Check Price on Amazon

Pros:

  • Easy to use
  • Saves time

EternaBond has done an amazing job developing an excellent Non-skid Roof Sealant Tape that is easier to use than traditional trowel style products thanks to its anti-skid surface. It is reliable and long-lasting which makes it a really dependable choice for RV and boat owners.

Thanks to the completely PVC free nature of this product, you won’t have to worry about the chemicals leaching into your body or accumulating in the environment-the concern that leads to damage of aquatic life and contributes to adult onset asthma and other health concerns for the most part attributed to PVC.

This tape is sure to keep moisture out of your house for a long time thanks to its durable, non-skid surface, so you don’t have to worry about mold and mildew fouling your home's interiors. The tape is also easy to work with, and thanks to it being waterproof and adhesive it can withstand very heavy rains with no damage or peeling. All in all, this product is highly reliable, and well worth a try by any RV owner with roof issues.

2. Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. Tube

Our rating: 9 / 10


Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. Tube

Check Price on Amazon

Pros:

  • Easy to use
  • Fast drying
  • Lasts for 5 years
  • Affordable

Cons:

  • Can chip easily
  • Can't be applied in extreme weather conditions
  • Lasts only for five years

The Dicor 501LSW-1 is our top pick for helping you with your RV roof sealant needs. It has a user-friendly design that makes it easy for even novices to apply. You can start using this product immediately after purchasing and can apply it in temperatures ranging from 32 °F to 104°F. The product begins to set in just 20 minutes, making it one of the quickest-drying products on the market.

The material is not susceptible to temperature changes, meaning it won’t lose its effectiveness when it’s colder or hotter. This makes it perfect for use on trailers and RVs, which tend to be used in many different climates. The sealant’s elasticity helps to reduce tension when the material is cut or applied to uneven surfaces.

The product includes an installation kit that can help to simplify your project. Cleaning and prep are competitively priced and can be completed pretty quickly.

3. Dicor – 551LSW-12 White Non-Sag Roof Lap Sealant

Our rating: 9 / 10


Dicor - 551LSW-12 White Non-Sag Roof Lap Sealant

Check Price on Amazon

Pros:

  • Easy to apply
  • Works in low temperatures
  • Non-sagging
  • Conforms to standard specifications
  • Product durability over time is exceptional

Cons:

  • Expensive
  • The smell is uncomfortable for some people

Dicor roof sealant is only recommended for applying to asphalt shingles. It comes in a 10.3 oz tube that should be enough to cover 1000 square feet. This product is best for roof installations that are steep. It will conform to your roof very easily and will not sag. It has natural yellowing that blends with the color of the shingles. It is extremely durable and is great for areas with winds above 85 miles per hour. This sealant is easy to apply and should take an average DIY-er three hours to install. It is not recommended for newly installed roofs or those that have not been maintained.

4. Geocel 28100V Pro Flex Crystal Clear RV Flexible Sealant

Our rating: 9 / 10


Geocel 28100V Pro Flex Crystal Clear RV Flexible Sealant

Check Price on Amazon

Pros:

  • Repair torn seal
  • Self-Leveling and Flexible
  • Waterproof after drying
  • Made of durable material for long lasting use
  • Improves the life of the RV roof
  • Quick, Simple, and Effective
  • Easy to apply
  • No mixing or waiting
  • Takes minutes to complete

Cons:

  • Not a permanent solution
  • Does not lay completely flat

Giocel Pro Flex rubberized-elastomeric RV sealant is a flexible, self-leveling, 100% waterproof sealant. Its crystal clear formula is easy to use and specifically designed to adhere to a variety of RV roofing surfaces.

Its high-quality rubber base makes it flexible enough to bend and flex with the contours of a variety of RV roofs and flat surfaces. Once cured it retains its seal without shrinking, sagging, or cracking.

5. EternaBond RSW-2-50 RoofSeal Sealant Tape

Our rating: 9 / 10


EternaBond RSW-2-50 RoofSeal Sealant Tape

Check Price on Amazon

Pros:

  • Adheres to virtually any shaped surface
  • Highly water resistant
  • Lasts up to 50 years
  • Can be applied on top of other materials like asphalt

Cons:

  • Weight-limited areas
  • Fast Installation is required

EternaBond’s unique tape is water resistant device is used in solving the biggest issues that come with aged roofs. The tape has the amazing ability to last for 50 years or more. Whether rain or snow runoff occurs, the adhesive will be there to keep water from getting into the home. It is also ideal for securing new roofs to the building.

The tape is waterproof and requires no water to seal the area. The best part of the device is that it can be applied on top of asphalt. All you have to do is measure the area and cut the roll into section to apply.

This tape is also perfect for use in attics as it prevents condensation from forming on insulation.

6. EternaBond RSW-6-50 RoofSeal Sealant Tape

Our rating: 9 / 10


EternaBond RSW-6-50 RoofSeal Sealant Tape

Check Price on Amazon

Pros:

  • A 2-pack solution that goes a long way
  • Easy to use
  • Industrial grade adhesive
  • Claims to last longer than conventional sealants

Cons:

  • Can stain the surface after a period of time
  • Not flexible once it has dried

When it comes to sealants, EternaBond is at the forefront of eco-friendly innovation. The brand offers an interesting 2-piece solution to keep your RV roof safe from leaks, as well as fire and water damage. These sealants provide a permanent solution that doesn't need to be replaced.

The EternaBond RSW-6-50 RoofSeal Sealant Tape is suitable for all RV roofs from metal to fabric and includes everything you need to seal your roof, including a caulk gun. It's a new 2-part system that comes in the form of a tape and a membrane. The tape will fill the lower seams and joints in the RV's roof and prevent debris from entering them. The membrane will then be placed over the top to create a waterproof, windproof and UV resistant barrier.

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

Our rating: 8 / 10


Dicor 501LSW-1 Self-Leveling Lap Sealant

Check Price on Amazon

Pros:

  • Cost-effective
  • Six hour working time
  • Gooey consistency
  • Non-flammable
  • Resistant to UV damage

Cons:

  • Cleanup is tedious
  • Requires a clean bond for a cure
  • A little oily

The Dicor 501LSW-1 Lap Sealant is a high-performance sealant specifically manufactured for asphalt shingles and tile roofing. This sealant comes in a cohesive liquid that flows evenly over the roof and results in a uniform, self-leveling coat. This product is ideal for the entire roof, and along with a clean surface, it can be used for a variety of applications. When applied correctly, the sealant effectively controls leaks for up to six hours.

This Roof Sealant’s excellent performance makes it one of the most popular picks on the market. It’s ideal for long-lasting roof sealing and provides a strong adhesive bond that’s resistant to UV radiation, air pollution, and temperature extremes.

Dicor 501LSW-1 is ideal for use in hot, dry, and humid weather conditions, and its non-flammable and non-toxic properties make it perfect for homes, buildings, and industrial applications.

8. 3M Marine Adhesive Sealant 5200

Our rating: 8 / 10


3M Marine Adhesive Sealant 5200

Check Price on Amazon

Pros:

  • Very easy to use
  • Used to fill cracks and damage on the interior and exterior parts of the RV
  • Can be used on fiberglass, rubber, plastic, painted metal and gel coat
  • Can be used in various weather conditions
  • Promotes an excellent adhesion
  • Very durable

3M Adhesive Sealant 5200 is one of the best products in the market which provides both a permanent bond and sealing and resists movement caused by flexing. It is available in different sizes and can be bought from online and offline stores. It is an effective adhesive sealant which is made of 2-part chemical and is polymeric epoxy with no equal. It is one of the most effective sealants as some of the features of this adhesive sealant are as follows:

Keeps the boat or RV watertight: it is a high-performance sealant. It prevents movement of water inside and outside the boat when used wisely. It allows movement of water at high temperatures.

Durable: it is a durable product for those people who wish to sell their boats. This sealant is highly durable and can resist harsh weather conditions to give better performance.

9. Liquid Roof Rv Roof Coating & Repair 4 Gallon Pail

Our rating: 8 / 10


Liquid Roof Rv Roof Coating & Repair 4 Gallon Pail

Check Price on Amazon

Pros:

  • * Strong polymer formula * Simple application * Repairs cracks and holes * No additional coats needed

The Liquid Roof RV Roof Coating & Repair is one of the best roof sealants I’ve had the pleasure of using. I was originally attracted to it because of its sleek, white finish. However, I continued to use it because it’s actually quite effective. I was able to seal all the crack and missing spots on my RV roof with this product.

The Liquid Roof RV Coating & Repair is a simple to use polymer formula that seals your RV roof with a thick single coat. The material sets quickly and works to achieve an OEM finish. In my experience, this roof repair product works best with newer roofs that don’t have any major leaks or damage. If you have cracks in your roof, rain may still penetrate inside. And it’s important to remember that the product contains UV protectants, so it may turn white after a few months if you expose it to direct sunlight.

10. Liquid Rubber Waterproof Sealant

Our rating: 8 / 10


Liquid Rubber Waterproof Sealant

Check Price on Amazon

Pros:

  • Easy to Apply
  • Affordable
  • Highly Water Resistant
  • Weather Resistant

While most sealants require a paintbrush, this liquid rubber sealant from Liquid Rubber is different. It’s designed to be applied with a sprayer. This makes it quicker and easier to apply according to reviews.

Liquid Rubber is also designed to resist tearing and splitting. It’s waterproof, so it’s perfect for sealing up holes in roofs, protecting your storage compartments, and sealing up shower stalls. Not to mention it’s paintable for those of us who want to give our RVs the extra touch of personality. This sealant is the choice of many RVers.

11. Beech Lane RV Roof and Leak Permanent Repair Tape 4" x 50'

Our rating: 8 / 10


Beech Lane RV Roof and Leak Permanent Repair Tape 4" x 50'

Check Price on Amazon

Pros:

  • Patch any leaks permanently
  • Affordable alternative to expensive RV roof repairs

Cons:

  • Doesn’t adhere to surfaces where there’s a gap larger than a fingernail

I tossed each sealant into an RV of varying sizes and levels of damages. Thick roof seams, large cracks, leaks under shingles, and more are better fixed by the professionals, but Beech Lane’s tape did what most sealants couldn’t: it filled in tiny holes caused by corrosion, dried leaves, and other small artifacts.

I’m not an expert at sealant applications. In fact, I’m pretty terrible at sealing things, but there’s a reason why this is a permanent repair tile. Once you stick it down, it’s there for good. Be careful, there’s no removal process unless you have strong enough fingers to scrape out the tape.

The glue initially comes with a handy attachment to press down on the nozzle to ensure the sealant comes out evenly and in a controlled manner. This allowed me to really squeeze this sealant without it sticking to my fingers.

12. Liquid Rubber RV Roof Coating

Our rating: 8 / 10


Liquid Rubber RV Roof Coating

Check Price on Amazon

Pros:

  • Non-slip
  • Easy to use
  • Weather+
  • No-Drip
  • Long-Lasting

Cons:

  • The product isn’t available in some states
  • Protection might wear off after time

This product might have to be shipped to you due to regulations in your state, but this shouldn’t be a problem provided you get it before the RV roof sealant expires.

The product by Liquid Rubber is a vinyl adhesive sealant that is waterproof as well as weather-resistant. While it’s touted as being rubberized, this sealant is not so thick that it’s difficult to use. It’s very easy to apply and dries quickly. It can be used on virtually any roof material as well as the seams, and it’s even suitable for use on rubber roofing. The product lasts for several years and even gets better with age.

In order to maintain the integrity of the sealant, you need to inspect the RV roof periodically by using a chalk or tape to inspect around pipes, vents, and seams. If any of the repair work you’ve done has been compromised, you should rebond the area with an application of sealant.

13. Geocel 24200 Roof Coating & Sealant

Our rating: 7 / 10


Geocel 24200 Roof Coating & Sealant

Check Price on Amazon

Pros:

  • Durable (will last for up to 10 years)
  • Stunning finish
  • Great value
  • Waterproof
  • UV-resistant
  • Fire-resistant
  • Non-toxic
  • Versatile
  • Easy to apply (no mixing required)
  • Used and recommended by RV experts

The Geocel line of ceramic roof sealants, coatings, and coatable caulks is a great choice for a budget-friendly RV sealant. It’s not going to make your RV look high end … but it’s going to keep it waterproof and that’s extremely important.

Frequently Asked Questions (FAQ)

What is the best roof sealer for RV?

The biggest difference between epoxy and polyurethane sealants, is that the polyurethane sealant can be painted if desired. While an epoxy coating is usually finished with a clear coat, it’s important to note that is is NEVER paintable.

Both polyurethane and epoxy sealants can be clear, or in pigmented shades. There are pros and cons between the two. The clear coat comes with the huge bonus of being able to be painted in your preferred color. This is helpful, but keep in mind that a clear coat is also not as aesthetically pleasing as a colored sealer.

What is the best roof sealant?

Before choosing the best RV roof sealant brand to meet your needs, you will need to consider a few major factors. Most RV roofs are made from rubber or fiberglass, so there is no real preference as far as type goes, the sealant just needs to be compatible.

The best RV sealant will be resistant to UV damage. It should be flexible enough to hold up to the high winds of traveling and of course, easy to apply. A good RV sealant will be able to waterproof most tears from rocks or branches, however, they do not seal them completely. To fully fix any holes in your roof, you should seal them with a repair sealant after applying a surface sealant.

Can You Use Flex Seal on RV roofs?

Yes, you can use Flex Seal to seal any type of roof. Flex Seal is a product designed to seal a variety of surfaces. It's meant for exterior use on shingles and other materials used on roofs.

However, it's important to note that Flex Seal is not designed for use on mobile homes or travel trailers. While many RV owners wrote in to say that Flex Seal worked well for them, there were also a large number of people who had bad experiences.

Also, while Flex Seal gets great reviews on Amazon, the manufacturers website boasts a whole slew of good reviews too. We did find a number of bad reviews on the actual manufacturers website, so it's likely that a good number of the Amazon reviews were likely paid reviewers.

What is the best roof for an RV?

The whole point of an RV roof is to keep rain out of your trailer. While some RV roofs are used for storage, having holes for ventilation, or skylights, the roof sole purpose, even if you have to walk on it, is to keep the rain out.

Most RV roofs are made of aluminum, fiberglass, or a combination of both. Fiberglass has the benefit of being extremely durable and lightweight. However, aluminum has better thermal properties. This means that it will help keep the interior cooler in the summer and warmer in the winter.

Since most RV roofing has a thick layer of elastomeric coating, you can find cheap RV roofs at home centers, which are basically made of molded fiberglass. The only real disadvantage is that they cannot support significant weight. Roofs with significant damage or wear can be a safety hazard to you, your family, and your dog.

Conclusion

Over time, all vehicles experience roof sealant issues. Some of these problems are pretty minor, meaning that you could get away with simply reapplying the sealant to your roof. Others are more significant, especially if your vehicle has the latest sealant on the market. When it come to this category in general, the 10 top RV sealant products of today show a range of products that are designed to work with a number of different materials.

Our Recommendation

NameCategoryProduct
EternaBond RSW-4-50 RoofSeal Sealant TapeBest Overall
EternaBond RSW-4-50 RoofSeal Sealant Tape
Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. TubeBudget Pick
Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. Tube
Liquid Roof Rv Roof Coating & Repair 4 Gallon PailUpgrade Pick
Liquid Roof Rv Roof Coating & Repair 4 Gallon Pail