RV

Best RV Roof Sealant To Protect Against The Elements

Publushed by:

George Cummings

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Water damage is the number one enemy of your RV, as it can result in repairs that cost a lot of money while also reducing your RV’s value if you want to resell it.

You can prevent water damage by ensuring you regularly seal your RV, and for this you can use a commercial RV roof sealant.

What, exactly, is an RV roof sealant? This type of product is an adhesive that comes in the form of a liquid or tape. It seals up cracks, seams, and leaks in your RV’s roof. 

A quality RV roof sealant needs to have important features, such as UV protection, flexibility, and others. Let’s explore them by reviewing five of the best RV roof sealant products and why they are worth storing in your RV before your next trip.

Best Overall: Jetcoat Cool King Roof Coating

Short summary

This roof sealant is versatile and convenient to use. Just one gallon of it will be enough to cover approximately 50 to 70 square feet, so since this comes in a five-gallon capacity it will go a long way on motorhomes. 

What’s especially great about this best sealant for RV roofs is that it gives you five years of coverage before you need to reapply it.

When it dries, it is a white color that will make your RV feel renewed and look refreshed, without being unsightly or clashing with your RV’s appearance.  

Quick Facts

Pros

Cons

Best RV Roof Sealant

4/5

Jetcoat Cool King Roof Coating

Runner-Up: Liquid Rubber RV Roof Coating

Short summary

This sealant offers excellent protection for your RV roof, but it’s versatile enough to use at home, such as on metal or flat roofs, sheds, and even planter boxes. You’re sure to get a lot of good use out of it!

This best roof sealant for RV applications is easy to apply, as you can apply it with a roller or brush, or even a paint sprayer.

You’ll love that it’s safe for use indoors and outdoors, which is sure to make it even more practical, whether you’re at home or travelling in your motor home.

This RV roof sealant is resistant to water and high temperatures, but not much is said about how many years you’ll be able to enjoy RV roof protection from it. 

Quick Facts

Pros

Cons

Best RV Roof Sealant

4/5

Jetcoat Cool King Roof Coating

Alternative: Premier Pro Products RV Roof Sealant

Short summary

This RV roof sealant is ideal for when you need to repair your RV roof. It’s been designed by the owners of the company who have 30 years of experience in the roof repair industry.

It’s trusted by professionals, so you know you’re getting a quality product that won’t let you down. 

This RV roof sealant can work on wood, rubber, metal, and asphalt roofs. It’s useful for mobile homes, motorhomes, and travel trailers.

If you’re an RV owner, you’ll know that you have to winterize your RV during the colder months and this sealant can help you do that, too.  

This RV sealant comes in a 750ml pouch that you’ll be able to use for areas of up to 130 feet.

During application, you don’t have to worry about an unpleasant odor, either, which makes it user-friendly. 

Quick Facts

Pros

Cons

Best RV Roof Sealant

4/5

Jetcoat Cool King Roof Coating

Alternative: AP Products Sikaflex 715 Roof Sealant

Short summary

This roof sealant is said to be effective for use on RV roofs because it has a high level of elastic internal strength. It’s strong enough to bond to a variety of components.

It doesn’t have a high amount of VOCs, which makes it safe to use.

This roof sealant provides UV resistance to prevent damage from the sun’s rays and sticks really quickly. It performs well to seal up any holes or gaps. It’s therefore great for regular RV maintenance and repair.

This roof sealant has been specifically designed for use on EPDM roof membranes. It doesn’t crack when exposed to extreme conditions, and dries in a white color.

To make it easy to apply, this tube comes with an applicator tip so that you can prevent making a mess while getting enough of the sealant you need.

It has a thin consistency which makes it easy to apply. 

Quick Facts

Pros

Cons

Best RV Roof Sealant

4/5

Jetcoat Cool King Roof Coating

Alternative: Dicor Self-Leveling Lap Sealant

Short summary

This product is ideal for sealing up roof edges, vent pipes, screw heads, air vents, and more, providing a strong, watertight seal. It’s also the best RV roof seam sealant to have handy. 

If you’re an RV owner, chances are you’ve heard about Dicor as it’s such a reputable brand of roof sealants.

This sealant sticks firmly to a variety of materials, such as wood, fiberglass, galvanized metal, mortar, aluminum, and even concrete.

You can also use this best metal RV roof sealant if you have TPO and EPDM sheeting, which makes it very versatile.

This effective RV roof sealant will only expire two years after the manufacturer’s stamped date, so it has a decent lifespan that makes it the go-to product when you have a leak to fix.

It’s also ideal for regular maintenance to keep your RV roof in good condition. 

Quick Facts

Pros

Cons

Best RV Roof Sealant

4/5

Jetcoat Cool King Roof Coating

RV Roof Sealant FAQ

If you need to purchase RV roof sealant, you might have some questions before you go ahead, such as how you should use the product effectively and how regularly your RV roof will need to be resealed to keep it in ideal condition.

Let’s explore these, and more, questions.

How often should you reseal your RV roof?

How often should you reseal your RV roof?

If you don’t reseal your RV roof on a regular basis, you can encounter problems such as leaks and high levels of dampness.

Both of these can be damaging to items you have inside your RV, such as your wallpaper or furniture, and it can also cause mold to grow, which is a health concern. Your RV roof can require extensive repairs if you don’t maintain its quality.

This is why it’s important to aim to reseal your RF every year. After 10 years, you should have your entire RV roof replaced. This is especially important to do if you use your RV regularly as it will be more prone to wear and tear. 

Roof sealant is a convenient way to look after your RV roof. It also keeps skylights and roof vents in good condition so that they don’t experience leaking.

Since both hot and cold temperatures, as well as rainy conditions all, cause the seals to wear away over time, you, therefore, have to ensure you reseal your RV and regularly inspect it for any damage.

What is the best way to seal an RV roof?

Sealing an RV roof can be done easily with a quality sealant product, such as the ones we’ve featured in our reviews of the best roof sealant for RVs. This type of product has many benefits.

  • It allows you to seal cracks and prevents them from becoming worse. 
  • It ensures structural protection. A sealant prevents warping that can occur from high temperatures and will prevent more expensive roof repairs at a later stage. 
  • It maintains safe temperatures inside the RV so you’ll feel cooler during the summer months and warmer when the temperature drops. It can therefore also save you money on energy costs.

There are two main sealant products for your RV roof which you should know about.

  • Liquid sealants: Before you can use these, you must clean and prepare the surface. Sealants that are in liquid consistency will require a long time to fully cure. They come in acrylic, silicone, or urethane-based formations, with silicone being the most durable.
  • Sealing tape: This is a bit more convenient than a liquid sealant. It’s basically tape that contains an adhesive sealant. It can contract and expand and can last for many years. 

Does RV insurance cover roof leaks?

Does RV insurance cover roof leaks?

Your RV insurance will usually pay you to purchase a new roof if the previous one was damaged by a collision, such as if you collided with a tree, another vehicle, or obstacle on the road.

If the damage to your RV roof was caused by a storm, the roof, substrate, and any damaged fixtures on the roof will usually also be covered by insurance.

It’s important to note, however, that if the claim for damage is considered to fall under RV maintenance, the insurance company won’t cover the cost for it. As an example, insurance claims that are linked to caulking tend to be denied as a result of how a lack of repair and maintenance is to blame.

Similarly, the water damage that’s a result of cracked skylights, or uncaulked and exposed screws, is also not generally covered by insurance companies.

Based on the above, it’s important to prevent serious roof damage from occurring in the first place by looking after your RV roof and sealing it regularly. 

How do you inspect RV slide seals?

Once you’ve checked your RV roof and properly sealed it, you should also check all of its seals.

On your RV, you’ll see components that have been installed in the sides and back. The installer of these components will have applied a silicone bead above and around the corners of the installed components.

Check all the seals for any cracks in the silicone. Applying sealant to repair them if they’re damaged can go a long way to preventing water damage in your RV. 

You should also inspect the slide seals, which are used on slide-out rooms to ensure no moisture can enter the RV. It’s important to note that there are two seals to look for: one set seals the coach when the slide-out is retracted and the other one seals it when the room has been extended.

Check the perimeters of all the seals. Look for anything that’s folded back and any inconsistencies of the slide-out. You might have to replace the seals, but the good news is they tend to come off easily with the use of a tool such as a plastic scraper.

For the general maintenance of RV seals, you can use acetone to clean them, as you’ll find that they become discolored over time.

Acetone will give them a deep clean so that they look good as new. Just be careful when using acetone as it can remove metal finishes, such as those on window frames. An alternative to acetone is to wash the seals with warm water and mild dishwashing liquid.

It’s also a good idea to lubricate your slide seals on a regular basis to ensure that they move smoothly. Dry lube is a good product to have handy for this task, as it’s easy to use.

Simply spray the product onto the base of the seals. Start from the top and work your way around the edges, and then along with the bottom seal. Let the lubricant dry for a few minutes before using the RV slides. 

Conclusion


The last thing you need during your RV camping trip is leaks or other problems with your RV roof. This can put a serious dent in your fun.

When your RV requires a bit of maintenance and repair, such as if your roof has suffered leaks, you’ll need to use a quality sealant to fix it. But, it’s not always easy to know which one to choose. 

In this buying guide, we’ve provided the best RV roof sealant to protect against the elements and fix leaks, as well as four competing products on the market and why you should choose them.

We’ve also featured information about RV roof sealants, such as how best to seal your RV roof and how often you should reseal an RV roof, so you can keep your RV in excellent condition.

In addition to that, we’ve also looked at slide seals on your RV as these require regular maintenance in order to keep them in great condition.  

Resources:

4/5

Jetcoat Cool King Roof Coating

Waterproof
2-3 hours to dry
UV Protection

George Cummings

George Cummings enjoys connecting with nature, meeting new people, and making friends from all over the world. RVing and camping create the perfect opportunity for [him/her] to take part in these activities. After spending several years on the road and exploring the great outdoors, George Cummings shares some of his best pieces of advice on how to make the most of your time while camping. TourTheOutdoors is his way of helping outdoorsy individuals like [him/her] start on a right footing with amazing recommendations and buying guides.