RV roof sealant – Top 10 best RV roof sealants reviews, Buying Guide & FAQ

I like to use the RV for leisurely travel. That is why; I prefer to have a comfortable experience while using it. However, unexpected maintenance can always crop up. If you have used an RV before, you will realize that one of the most common problems which you can experience is a leak in the roof. It can ruin your entire experience. Due to this very reason, you must have RV roof sealant around.

You need a sealant which works quickly and can eliminate the problem. Instead of comparing different RV roof sealants, it is advisable to go through my list below. I have compiled this list after using most of these of sealants, and that is why I’m pretty confident that they work. I will follow up with a guide which will make it very easy for you to choose the right sealant.

1. Geocel 28127V Bright White RV Flexible Sealant

 

The first one which I am talking about comes in Pack of 4. Each pack consists of 10 oz. of sealant. The sealant which I’m speaking about now is suitable for any recreational vehicle or automobile. The property of the sealant is such that after applying, it can expand and contract. Due to this very reason, you can be sure that it will fill any gaps and cracks quickly.

The advantage of the sealant is that it is usable in any weather conditions. It means that you will not have to worry about the rains to subside or the snow to go away before using it. You can use it right away when you encounter any problem. You can even use it on a damp surface, and it will work equally well. It does not crack, which means that you can use it for a long time without any problem.

The UV resistant sealant ensures that it will remain in its place irrespective of the weather. It is resistant to dirt. As a result, the durability of the sealant is on the higher side. You will not have to worry about applying it again and again. You can even paint over it to amalgamate it with the vehicle color. The blend of all of these features has propelled it to the top of our list.

Pros

  • Comes in Pack of 4
  • Suitable for any vehicle surface
  • UV resistant
  • Dustproof
  • Can expand and contract
  • Highly versatile
  • Paintable

Cons

  • Requires high pressure to squeeze out

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

 

The next option on my list is by Dicor. Dicor has made a name for itself when it comes to sealants. You can use the sealant not only on the RV roof but also on the home roof, around the vents and any other gaps. That is why it is highly versatile than any other option that you will find.

It is compatible with most roofs and fixtures, which mean that you can use it quite easily. It is suitable for application over surfaces like vinyl, concrete, motor, aluminum, galvanized metal. As a result, applying it on the roof of the RV is not a problem. It is UV stabilized, which means that it can handle the sunlight quite easily. It will not crack or suffer from extensive wear and tear under sunlight.

It keeps the gaps sealed consistently and is highly flexible, which avoids cracking. It does not impact the surface over which it is applied. The quantity of the sealant is 10.3 oz. It comes in Pack of 4. Thus, when you are planning to buy a branded RV roof sealant, you can consider this option.

Pros

  • Compatible with most roofing materials
  • UV stabilized
  • Does not deteriorate the surface on which it is applied
  • Highly flexible

Cons

  • Difficult to remove on accidental application

3. Flex Seal Liquid Rubber

 

The sealant which I’m speaking about now is liquid rubber in a can. You can quickly pour it over the area which you want to seal. You can pour it, use it as a dip, roll it, or brush it. The application options are plenty. Due to this very reason, applying it is not a problem. The quantity of sealant in the can is 1 gallon.

With the help of the liquid rubber, you can easily create a watertight seal which will not leak. It can seal out air, moisture, and water. Any element of weather will not be a problem when using this liquid rubber. It is UV resistant, which means that durability is not an issue. It is safe for plants and animals. So, you will not have to bother about any collateral damage.

With the help of non-toxic, non-flammable, and non-hazardous ingredients, you can use it with ease. It is mildew and chemical resistant as well. Also, it prevents any rust and corrosion. As a result, you can not only plug any leaks with the help of this liquid rubber but also protect the surface. That is why, if looking for RV rubber roof sealant; you should not ignore this option.

Pros

  • Corrosion-resistant
  • UV resistant
  • Completely safe for use
  • Easy to apply

Cons

  • Susceptible to peeling over time

4. Liquid Rubber Water-proof Coating

 

The option which I am highlighting now can consist of liquid rubber. You can use it on a wide variety of surfaces. You can use it on the metal roof or the flat roof of your house. It is even suitable for sloped roofs, foundations, sheds, basements, materials like metal, concrete, wood, and more. In terms of versatility, it certainly scores pretty high.

The entire application process is pretty small. You can apply it using the press, roller or paint sprayer. As a result, it will not take you a lot of time to apply. Additionally, you can apply a heavy coat to ensure that the membrane is entirely waterproof. It is safe for humans and pets alike. You need not require any special breathing apparatus while applying it.

You have to just clean the surface first before applying it. That will increase its efficiency manifold. You have to just leave that surface at least for 48 hours. Once those are over, it will settle down quite quickly. It does not result in any odor. It comes in a 5-gallon pack, which means that a single pack will be more than enough for sealing the RV roof. When searching for a safe to use and effective RV roof sealant, you can buy this one.

Pros

  • 5-gallon pack
  • Easy to apply
  • Safe for application
  • Highly versatile

Cons

  • Can turn black over time

5. Heng’s Rubber Roof Coating

 

The next sealant which I am highlighting now has a rubber roof coating. It comes in 1-gallon packaging. You can use it on your RV, at seams, tears and even in the air conditioners and vents. The applications are virtually endless.

With the help of UV resistant sealant, it is easy to seal the roof of your RV in the longer term. It expands and contracts on the roof. It means that you will not have to worry about cracking or applying it again. It is crack-resistant, which means that a double coat should be more than enough.

It can easily withstand any impact as well, which means that the vibration of the RV as well as the movement, will not impact it. It is non-polluting and non-toxic, which makes it even easy for you to apply it. When you’re on the look for a simple and easy to use RV rubber roof sealant, you should not ignore this option.

Pros

  • Crack-resistant
  • Non-toxic
  • UV resistant
  • Suitable for a wide variety of applications

Cons

  • Occasional flaking

6. ToughGrade Self-Leveling RV Lap Sealant

 

The main advantage of this RV roof sealant is that it is UV stabilized. It means that even weeks after application, you will not have to worry about deterioration or discoloration. Once applied, you will not have to worry about reapplying it again and again.

When you look at the applications, you can use it not just on the RV roof but also on the vent pipes, air conditioners and a variety of other places. It is suitable for use on any kind of horizontal surface. You can use it on vinyl, galvanized metal, concrete, and even aluminum.

It is highly flexible, which means that cracking is not a problem which you will suffer from. It comes in a pack of 4. The amount of sealant in the tubes is 10.3 ounces. The tubes are easy to carry and store. It is easy to use, which is highly flexible as well.

Pros

  • Flexible
  • Suitable for a variety of surfaces
  • Comes in a pack of 4
  • UV stabilized

Cons

  • Not self-leveling

7. 2 Pack of Alpha Systems 1021 Self-Leveling RV Sealant

 

The main USP of this RV sealant is its durability. It is a long-term weather sealant. That is why; it is popular among RV owners.

It has high UV resistance and even ozone resistance. As a result, irrespective of the weather or how much you use your RV, you will not have to worry about cracking or deterioration of this sealant. It is self-leveling as well, which means that the entire application process is easy. It does not consist of any hazardous air pollutants, which makes it easy for you to apply it.

You can easily paint over it which means that making your RV look aesthetically pleasing is not a problem at all. It has high-temperature resistant, which ensures that even during the winter, sun, and snowy conditions, you will not have to worry about this sealant cracking up. It comes in a pack of 2 which in most cases is more than enough for sealing the roof of your RV. All in all, the excellent temperature resistance and self-leveling nature of this RV roof sealant make it an excellent choice.

Pros

  • Self-leveling
  • Does not consist of hazardous pollutants
  • Paintable
  • High-temperature resistance

Cons

  • Slow to dry

8. Kool Seal KST063600-16 Elastomeric Roof Coating

 

The advantage of this roof sealant is that it clings to your roof. You can use it at any temperature. Thus, you will not have to wait for a particular season to use it on the roof of your RV.

It can provide protection against moisture and water. It is mildew and algae resistant, which means that you will not have to worry about any organic growth on the coating.

It is environmentally compliant, which means that applying it is not a problem. An additional feature of the sealant is that it absorbs sound as well. As a result, the sound insulation which you will get in your RV will be on the higher side. The capacity of the can is 115 fl oz. When you need a multipurpose elastomeric coating for RV, you can consider this option.

Pros

  • Provides sound insulation
  • Suitable for use it any temperature
  • Resistant to organic growth
  • Moisture protection

Cons

  • Cans are not that sturdy

9. Rust-Oleum Rust Leak Seal

 

The sealant which I am highlighting now comes in a can of 30 ounces. You can use it for interiors as well as exteriors. It is not only suitable for the roof of the RV but also for your home roof, ductwork, and even on concrete and metal materials. Since; the formula is oil-based, it can help you in seal the leaks as well as cracks.

The main advantage of this sealant is that it requires just 1-hour drying. A single can will suffice upto 40 ft.² which is a definite advantage. It is water and moisture resistant, which means that you can keep the elements of weather at bay when applying it to your RV roof.

You can coat it with oil-based paint or latex to get the kind of look which you want. It is rust-resistant, which is another advantage. Since the drying time is pretty less, you can be sure that it is easy to use. That is why, if a highly versatile RV roof sealant is your requirement, you can consider this option.

Pros

  • Quick to dry
  • Highly versatile
  • Paintable surface
  • Rust resistant

Cons

  • The packaging is not satisfactory

10. Liquid Rubber RV Roof Coating/Sealant

 

The RV roof sealant which I am highlighting now comes in the 5-gallon can. You can use it on your RV roof, metal roof, campers, trailers, gutters, and even interior basement. You can use a brush or paint spray or roller to apply it. If you want to get a waterproof membrane, you have to use a heavy coat. Also, the can is self-preserving. Once you close it, you can easily preserve the sealant.

The liquid rubber which I am highlighting now has non-oil formula. It does not consist of any harmful odor. So, you can use it indoors and outdoors safely.

You have to make sure that you apply it on a dry surface. Once you do so, it is easy to seal any gaps and cracks. You can clean it with soap overtime to eliminate dirt. It will dry on its own within 48 hours, which means that after that, you can use your RV. If you’re looking for the versatile and easy to apply RV roof sealant, this one will not disappoint you.

Pros

  • 5 gallon can
  • Easy to preserve
  • Completely safe to use
  • Can dry within 48 hours

Cons

  • Coverage could have been better

So, if you’re searching for the best RV roof sealant, these are the ten options to consider. Once you choose among these ten options, it becomes easy for you to get the perfect waterproof seal. It will help you enjoy your RV experience without any worry. I will now share with you a buying guide that will help you pick the right one among these ten options.

RV roof sealant buying guide

This buying guide aims to make it easier for you to pick the right RV roof sealant. You can do so by comparing them on a few factors.

Things to consider while buying RV roof sealant:
The parameters which you should check before buying RV roof sealants include:

• Constituents:

You have to first find out about the constituents of the roof sealant. It can be liquid rubber or any other type of sealant. You have to look at the constituents before you make your decision. Ideally, they should be harmless to apply.

• Drying time:

You have to look at the drying time to figure out how much time you will not be able to use your RV. Only when you’re sure about that, you can choose the best RV roof sealant.

• Application process:

You can apply it with a brush, spray can or a roller. Many of the roof sealants even provide you with all three applying mechanisms. It is essential to know about the application mechanism before buying. It will ensure that you can choose the RV roof sealant that you can easily apply.

• Package:

You have to look at the packaging in which it comes. Many of them come in a small tube, or it can be in the form of a can. You have to look at the use which you have and then choose accordingly.

Once you compare the best RV roof sealants of these four factors, it becomes easy for you to pick the right one. I will now answer some pertaining to RV roof sealants.

FAQ

What is the best sealant for RV roofs?

The Geocel 28127V Bright White RV Flexible Sealant is the best sealant for RV roofs as it is dust-resistant and UV-resistant. It is also easy to apply and can expand and contract as per weather conditions.

How do you reseal an RV roof?

The best way to reseal an RV roof is to use any of the above RV roof sealants. These will ensure that you can keep the moisture and other elements of weather at bay. You can simply apply them on any cracks, gaps which you come across on the RV roof.

So, if you simply want to choose the best RV roof sealants, these are the ten options which you should go with. I have compiled this list with care to include only the best RV roof sealants. With these, you can easily make your RV weatherproof again and ensure that its structural integrity is intact.

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