Best Caulk for RV Exterior in 2019 – Reviews and Guide

Any RV owner understands the severity of water damages; new owners find themselves in predicaments when it comes to water damage on their campers. Long-time owners prevent any amount of water from penetrating their recreational vehicles because they understand the effects of water in the long run. This the primary reason you as the owner should think about the best RV caulk.

A high-quality RV seals slits and cracks every time; this prevents one from undergoing extreme maintenance work because it prevents severe damage. Also, an effective sealant should control molds from growing within your caravan. Caulking and sealing your RV’s roof edges, air vents, air conditioners, and venting systems prevent you from spending lots of money on repairs.

Are you finding it difficult in picking the best? In reality, it’s mind-boggling to find one since the market is flooded with various options. The real problem with these alternatives is quality; most of them are of low quality since some manufacturers are in the business for quick cash. Therefore, the customers must understand the RV market dynamics; this will enable them to identify high-quality products from lesser quality products.

Caulk for RV

So what’s the significance of this article? The piece will provide you with relevant information regarding RV products. From various types of RVs, essential factors, where you should buy to other crucial details that will enable you to make an informed decision. The content will help you to find products that will meet your expectations, and water damage will be a thing of the past.

It should be noted that not every caulk will be used on the RV, caulks such as silicone caulks are not suitable for camp trailers, mainly because they are too brittle and they get too hard to remove. The other thing, silicones don’t stick with anything, therefore, even if you want to hold another caulk on top of it.

You may be asking whether an RV caulk can work on every RV material and fixture. Parts of campers that need waterproofing are windows, roof, walls, and others. The materials that are used to make the mentioned parts include vinyl, synthetic plastic, woods, and other metals. Caulks are designed to work on these materials, but not all of them. Also, some products are optimized for vertical structures such as windows, while others are designed for horizontal structures such as roofs.

For your purchasing experience to be less stressful, this article has prepared you details of how to pick the right RV caulk for your trailer or camper.

What is An RV caulk?

Trailer sealant is formulated and optimized to be used in campers, trailers, recreational vehicles, and motor homes. They are made to seal and fill gaps and cracks. Also, this product can be used for vehicle maintenance and repairs. It can also help to seal what can cause water damage.

Caulk for RV exterier

Best RV caulk for RV Exterior

When it comes to shopping the best Caulk for your RV exterior, you would be overwhelmed after seeing plenty of options available in the market. Since you will need it to seal your recreational vehicle, you must choose the most durable, flexible, and high-quality sealant. After complete research, we came across the below-mentioned sealants. Not to mention, these sealants will work best in sealing your RV surface and prevent leaks.

Super Flexible Elastomeric Sealant from Pro-Flex

The Super Flexible Elastomeric Sealant is quite a good acrylic sealant you can get your hands on. The product claims to have a fifty-year life. Even if it is not true, the product may last you for several years with its lasting power. This sealant is flexible, which means you can apply it on a variety of surfaces. However, it is ideal for a metal roof, as it has a very tough texture. The best thing about this product is it will not look messy after you have done leveling. Instead, it will create a smooth and finished look after application.

Super Flexible Elastomeric Sealant

You can paint over it to hide its original color, and therefore it will not become prominent like other sealants. Note that you will need to cure this sealant for a couple of months. While this sealant is perhaps among the best ones, the only thing that some RV owners do not like is its smell. It has a very strong smell and can be unbearable for some people. Therefore, if you are using it to seal your RV parts, make sure to put a mask on your face to avoid its smell.

Pros

  • It can fasten to most materials
  • You can paint it to create a smooth appearance
  • It is a high-quality sealant that will last for longer
  • Boasts impressive contractions and expansion properties
  • An ideal option for metal surface

Cons

  • Comes with a strong smell
  • Curing time is longer than usual products

Self-Leveling RV Lap Sealant from ToughGrade

This is the second-best product on our list because of its quality and features. It works excellently in sealing the venting systems, air conditioners, roofs, and other items. Since it is ideal for marine applications, you can rely on this sealant to protect your RV in rainstorms. It cures robustly and creates a firm layer of sealing on the surface. You can use this sealant on screw heads, and vent covers too.

While it is a UV stabilized product, this sealant can protect your RV parts from deterioration and discoloration. Because o fits versatility, you can use it for a variety of surfaces and on different types of materials. From mortar, concrete, and aluminum to wood, vinyl, and galvanized surface, you can use this sealant on any material to protect your RV. It does not damage the color or cause any stain to the material. This Self-leveling RV Lap Sealant from ToughGrade can protect your vehicle roof from extreme weather conditions. Overall, it is a durable and flexible option.

Pros

  • You can use it on horizontal surfaces
  • Comes in different packaging and sizes
  • Seals screw heads, air conditioners, and venting systems
  • Prevents deterioration and discoloration

Cons

  • May cause nose and skin irritation

501LSW-1 Self-Leveling Lap Sealant from Dicor

If you are looking for a rubber roof sealant, you should opt for this amazing lap sealant from Dicor.  It seals your roof efficiently and protects your recreational vehicle from harsh weather. The roof of RV is susceptible to damage to those outdoor elements like snow, wind, and rain cause. Moreover, the cold temperature can damage your RV roof. Such elements may cause cracks on your RV roof, and you may have to spend hefty amounts on repairs.

501LSW-1 Self-Leveling Lap Sealant from Dicor

However, this lap sealant not only saves your money but also protects your RV against extreme weather conditions. This sealant is ideal for EPDM sheeting. You can use it safely and conveniently for your RV roof. It offers strong adhesion to wood, galvanized metal, concrete, vinyl, aluminum, and mortar. Because this sealant remains flexible, it will not crack over the years. Additionally, you can clean this sealant easily. Overall, this sealant is the best option for sealing your RV, as it will not stain or discolor any material.

Pros

  • Seals air conditioners, vents, and other materials
  • Works effectively on EPDM sheeting
  • Offers excellent adhesion to different materials
  • Offers high flexibility and does not crack over time
  • Protects recreational vehicles from water leaks

Cons

  • Will not work on vertical surfaces as it is self-leveling

1021 Self-Leveling RV Sealant from Alpha Systems

If you are looking for a product that offers amazing weather resistance, you should go for this RV Sealant. Because it includes high-quality materials, this sealant will ensure to withstand harsh weather conditions easily. This product will prevent you from the common woes that may come along with the worst temperatures or changing the weather. This sealant will also protect your RV on rainy days.

1021 Self-Leveling RV Sealant from Alpha Systems

It will not wash away or damage even in -40 degrees Fahrenheit, which makes it the best product to resist extreme weather conditions. Additionally, the product offers excellent adhesion to a variety of surfaces. When it comes to durability, you will not need to worry about its tearing or to peel when you apply a paint coat on your RV roof. That means, if you are painting your RV roof, you will not need to apply another coat of this sealant. The self-leveling capabilities of this sealant are not too shabby; you will not need to put extra effort into leveling up the sealant.

Pros

  • Works efficiently on a variety of surface
  • Offers high resistance against UV rays and freezing temperatures
  • Fasten excellently to RV surface
  • Features high durability
  • Easy application
  • Outstanding resistance to oil, fuel, and grease

Cons

  • Comes with high sticking power

28100V Pro Flex Crystal Clear RV Flexible Sealant from Geocel

The Crystal Clear RV Flexible Sealant is one of the most versatile sealants available in the market. You can use it for a vast range of applications. Whether you have small recreational vehicles or big motorhome, it works effectively on different models of RVs. This sealant can withstand even the worst weather conditions. Additionally, you will not need to worry about its durability, as it will not wash away on rainy days. It boasts great contraction and expansion properties, due to which it can handle temperature changes and joint movements easily.

28100V Pro Flex Crystal Clear RV Flexible Sealant from Geocel

It does not matter if your RV surface is damp, oily, or frozen; this sealant will bond with the materials efficiently and give you the best results ever. Because of its flexibility, you can fasten it to a wide range of surfaces. Pro Flex is highly resistant to cracks and ultra-violet rays.  Unlike other sealants, this sealant will not create an unfinished look when you apply on RV. The best thing about this product is that you can reseal it. You will not need any assistance to apply the sealant. Instead, you will be able to apply it on your own. It is a non-stringing formula, which is quite easy to apply. If you want to use a sealant for wood, vinyl, fiberglass, or steel surface, it will be the best option to seal and protect your RV from leakage.

Pros

  • Available in different colors
  • Ensures maintenance and quick repair
  • Can reapply to the previous application
  • Works on a variety of surfaces
  • Mildew-resistant and water-resistant
  • Easy to apply on surfaces
  • Crack-resistant

Cons

  • It may not work effectively on potable water installations, EPDM, and TPO

Factors to Consider When Buying a Caulk for RV

Before you pick waterproof filler, you should consider some factors. Below are some aspects you should look for when buying a caulk:

  • Ease of use and installation

The product should be easy to use and apply. Also, the caulk shouldn’t need a lot of time to accomplish the given task.

  • Compatibility with various materials and applications

Is the commodity more consistent and useful in many material surfaces? Have a look at the materials that are used to make it; this will give you a clue whether it’s the right product.

Concerning application, it should be versatile when working on sealing screw heads, roof edges, venting systems, air vents, and air conditioners. Also, it should be used easily in sealing gaps or cracks on plumb fixtures such as kitchens, bathrooms, and showers.

  • Cost

When buying anything, your financial prowess should be one of the major determinants. Buy a product that’s within your reach.

  • Brand and type

Buy a brand that’s recognized globally. Such brands shows that the product is trusted because it offers top performance, delivers high quality, and it’s affordable.

In figuring out the type of caulk for your camper or RV, familiarize yourself with the materials that you’re going to seal. This is because some caulks are effective on some elements, while others are not active on other components. The material should guide you.

  • Performance

A high-quality product sticks and works well on the applied surface. More so, best quality adheres better with age. The product should also be paintable and resealable; it means that it can be re-applied on itself.

  • Moisture and temperature

Moisture and temperature are essential when making a choice. For instance, if the problematic area is moist and wet, then you should consider a waterproof caulk which can resist mildew and molds. On the other hand, if the domain is prone to excessive heat and coldness, then you should pick a caulk that can accommodate any temperatures.

  • Water Repellence

It should be waterproof, meaning it can prevent your RV from rainwater damages and other moistures. Check its compounds to know the capability.

Benefits of RV caulk

Why should you use an RV caulk?

  • Blocking of leaks

When the rain falls, water penetrates through your camper cracks, hence, lots of holes inside. To prevent all the leaks, you need to seal off all the cracks properly for water not to pass through. Lots of water inside the camper will make flood it.

  • Curtails molds growth

When water settles in an enclosed and warm space, mildew and molds thrive. This is one of the dangerous things since any breathing in of molds can be deadly.

  • Blocks entry of insects

Camping takes place in various places; it can be on an open field or thick woods. Once you’re in these kinds of situations, you’re exposed to multiple types of insects. Mosquitoes and bugs are the common insects, and you know the risks you’re exposed to when these insects bite you.

  • Debris can’t fall in

If there are cracks on your trailer, like water, debris will fall inside. Debris can come from trees, air, and anywhere around you. The trash in your camper will make your camper dirty; this will force you to do extra duties. Seal it regularly to prevent such situations.

  • Increases the value of the RV

You can decide to sell your camper at one point. If your camper has got many holes, its value decreases massively. To fetch good money, maintain your RV by using best sealants on the cracks and holes.

Types of RV caulk

There are so many types of caulks in the market. All you’re supposed to do is choosing the best that suit your needs. Below are some of the popular products.

Acrylic caulk

This is the most common in the market.

Pros

  • Cheap
  • Effective in smaller jobs such as wall or ceilings small cracks and slits
  • Works well on drywall and woods

Cons

  • Not effective on big breaks

Silicone caulk

When you talk about caulk, everybody relates it to silicone. This is because silicone is one of the ancient caulk and it has been used for many years

Pros

  • Mold and mildew proof

Cons

  • Too brittle
  • Too hard to remove
  • Can’t stick other sealant on top of it

Adhesive caulks

These products are naturally sticky and sticks very well on surfaces.

Pros

  • Easily sticks parts together
  • Seals created cracks easily

Cons

  • Once you open them , ensure you apply them immediately, otherwise they lose their sticking prowess

Vinyl caulk

It’s similar to acrylic

Pros

  • Lasts longer
  • Works better on the outdoor

Cons

  • Not flexible

Fireproof caulks

These are red-colored caulks that are fireproof.

Pros

  • Prevents fire from entering through the sealed cracks

Cons

  • They are not necessary since the principal value for caulks is sealing campers from water penetrations.

FAQ

Is silicone caulk right for RVs?
It can be used, but it’s less flexible, doesn’t stick easily, and can’t be removed easily. All you need is a sealant that stretches to cover the entire crack.
Can RV caulk work well with other materials apart from RVs?
Mostly they can work with every kind of materials, but it’s not advisable to use the products for other purposes apart from RVs. Besides, some RV caulks can work for all materials while others can’t.
RV caulk stays on the applied surface for how long?
How many times are you using your RV? The more use, the less lasting it can be. It’s advisable to re caulk twice a year. This makes it to stay long.
How do you caulk an RV rooftop?

This is a simple task, follow the below steps.

  • Ensure there’s no snow or rain when caulking
  • Clean the roof with a solution of water and soap
  • Thoroughly dry it off
  • Find the holes and cracks
  • Pull out the caulking gun and cut the tip
  • Apply the caulk on the holes and cracks
  • Smoothen it
  • Wait for it to dry off

Conclusion

RV caulk is essential for any campers. For one to be on a safer side, you need the best product; otherwise, you’re bound to fail if you use substandard products. There are various aspects to consider when buying RV caulks, but it’s worth to buy a caulk that saves your effort, time, and money.