RV life can come with challenges, and finding quick and affordable ways to solve them is essential.
RV maintenance is one of the best ways to ensure you stay ahead of any potential issues and keep your RV in tip-top shape.
Your RV roof provides the basis for your shelter, and taking adequate measures to ensure it remains well looked after will keep you dry and protected from the elements.
A quality RV roof sealant will leave your roof able to handle any environment. We have found the top RV roof sealant options available to assist you in selecting your ideal one.
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At A Glance: Best RV Roof Sealant For Campers
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Sikaflex-221, Black
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Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant
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Premier Pro Products RV Roof Sealant
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ToughGrade Self-Leveling RV Lap Sealant
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EternaBond RoofSeal White 4″ x50′ MicroSealant UV Stable Seam Repair Tape
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Things To Consider When Choosing RV Roof Sealant
RV Roof Material
Not all RV roofs are made from the same material. Therefore, it’s important to understand your roof type and which sealants will work best with each material.
Using compatible sealants is essential when repairing or replacing your RV’s roof.
Using the wrong type of sealant can result in possible water leaks and make your roof wear out faster due to sun exposure and other environmental elements.
Ensure you use the correct sealant for maximum protection, and always check compatibility before using any product!
EPDM (ethylene propylene diene monomer)
EPDM is a synthetic rubber roofing membrane that is often used in commercial as well as RV applications.
It is durable and resistant to extreme temperatures, has the ability to stretch and move with the expansion and contraction of your RV over time.
EPDM requires special self-leveling or non-sag sealants such as butyl rubber sealant. Any other type of sealant could potentially compromise the integrity of the roof material.
Fiberglass
Fiberglass, often referred to as GRP, is another common choice for an RV roof.
The application process is slightly more technical than some other roofing options due to its need for primer, adhesive, lamination layers, and an outer coating for maximum protection against UV light exposure.
A fiberglass roof may require silicone-based caulking or another type of liquid adhesive designed to create a strong bond for fiberglass roofs.
TPO (thermoplastic polyolefin)
TPO is a single ply membrane that was developed primarily for commercial use.
It’s become a popular roof for RVs thanks to its affordability and ease of installation compared to EPDM or fiberglass solutions.
TPO requires a specialized TPO adhesive/sealant to provide a strong bond while still allowing flexibility.
It will reduce cracking at weak spots caused by temperature fluctuations throughout the year.
Aluminium or Steel
Many van conversions have metal roofs, and most have joint seals between panels.
Typically, those seals are some form of self-leveling caulk such as Dicor Self-Leveling Lap Sealant.
Read more: A Complete Guide TO RV Roof Maintenance
Types Of RV Roof Sealer
There are several types of RV roof sealant that can help you repair or maintain your RV roof.
Each type has different uses and applications, so it is important to know the difference between them in order to choose the right product for your needs.
Self-Leveling Sealant
Self-leveling sealants are designed to fill large gaps or voids in an RV roof’s construction.
The runny consistency makes it easier to apply and spread evenly across a larger surface area.
It dries quickly and creates a strong bond to keep water out of your RV, making it great for quick repairs and sealing potential leaks.
Low/Non-Sag Sealant
Low and non-sag sealants are thicker than self-leveling sealers but still offer easy application.
They create longer-lasting bonds than self-levelers because they don’t settle as much when exposed to heat variations.
Non-sag RV roof sealant is also great for sealing seams, joints, cracks, and tears in the RV’s rubber roof membrane material.
It’s especially useful near the edge of the roof, where a self-leveling sealer might run down the sides of your RV.
Tape
Seal tape is a non-liquid option for sealing straight joins with a wide section of heavy-duty adhesive tape.
It leaves a nice clean finish on straight runs. It’s excellent for suring up seams on slide-outs or other areas where you need a tidy finish.
Butyl tape is a specific type of tape that is used as an initial seal before covering it over with another sealant. It’s ideal as a first layer of seal for roof vents and windows.
Total Roof Sealant for RVs
If you need to seal your entire roof, there are products available that are designed for this purpose.
Total roof sealants provide a waterproof coating that can be applied to the entire surface area of your RV’s roof, protecting it from the elements.
These products generally come in liquid form, and you’ll need to take care to apply them for a neat finish.
Or use a professional company to reseal the entire roof instead.
Non RV Specific Sealants
Several generic sealing products, such as caulk, epoxy putty stick, etc., can be used on RV roofs if needed too.
Depending on your specific need, this could provide an acceptable solution at a lower cost point than purchasing specialized RV roof sealants.
Just make sure you do some research first into whether these products are suitable for use on EPDM or TPO roof membranes!
Weather Protection
It is important to choose a sealant that has protection against UV rays, rain, and extreme temperatures.
This will help ensure the sealant lasts longer and protects against potential leaks.
Ease Of Application
Make sure that you select a sealant that is easy to apply so you can get it done correctly without any difficulty. It might not be worth the hassle if it’s hard to apply!
Waterproofing
Check the specs of the sealants to make sure they are waterproof – any potential leaks should be sealed up as soon as possible!
Cost
Consider the cost of each product in order to get the best value out of your purchase.
1. Sikaflex-221, Black – Best Overall Rv Roof Sealant
Features
- A one-component formulation that has an elastic consistency
- It is resistant to aging and weathering exposure
- Can be over-painted as well as sanded
- Bonds well to a wide variety of substrates
Sikaflex-221 is a high-quality multi-purpose sealant that cures on exposure to atmospheric humidity to form a durable elastomer.
Sikaflex-221 bonds well to a wide variety of substrates ideal for a variety of types of RV roofs. It is suitable for making permanent elastic seals of high adhesive strength perfect to get into hard-to-reach RV roof areas and sealing them for good.
What We Like
This RV sealant adheres to surfaces well and is soft enough for flexibility but tough enough not to crack or break.
This is a great option for an RV roof to ensure you can seal odd-shaped or hard-to-reach areas on your RV roof.
This option can be painted to ensure you keep your RV looking good in the same shade of paint.
This RV sealant does not shrink in any way giving you peace of mind that your roof will be secure after use.
What We Don’t Like
You are likely to need strong forearms and grip because this RV roof sealant comes out slower and stiffer than other options.
This is not convenient when you are working on your RV camper roof.
Since it comes out slower and stiffer, it will stay where you put it and won’t self-level, which is not ideal on your RV roof and can leave it looking unprofessionally finished.
Pros
- Adheres well to multiple substrates
- The flexible adhesive that does not crack
- Can be overpainted for a quality RV roof finish
- Will not shrink keeping your Rv roof sealed
Cons
- Comes out slow and stiff
- Does not self-level leaves an unprofessional finish on the RV roof
2. Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant – Best Self-Leveling RV Roof Sealant
Features
- Creates a secure, secondary seal along the roof’s edges, air vents, vent pipes, and screw heads of RVs
- Adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass, and concrete
- Compatible with EPDM and TPO sheeting
- Self-Leveling Sealant
Dicor helps create a watertight seal along the RV roof’s edges, around air vents, vent pipes, air conditioners, and screw heads.
It offers excellent adhesion to multiple substrates helpful to adhere to a variety of RV roof components.
Dicor improves the ability to continuously seal while remaining flexible. It is UV stabilized to handle your RV roof’s elements.
What We Like
This product self-levels it flattens out, which looks great and allows water to flow easily across your RV roof.
This sealant works great on things like RV roof vents and where ceiling fans protrude from the roof.
It is meant to be put on in a generous manner, it may not look pretty but it will flow into all necessary nooks and crannies and fill potential leak spots.
Dicor is much better than silicone, which tends to crack, leak or peel. This sealant flows smoothly, allowing you to seal your RV roof comfortably.
What We Don’t Like
If you are near the edge of your roof, you need to be cautious as this can level out by the roof edge and drip down the sides, which will leave your RV roof looking poor.
This sealant is best for use on horizontal surfaces. Keeping a partially-used tube is tricky, as it can dry out and become useless.
You need to make sure the product is not exposed to air after sealing your RV roof.
Pros
- Great self-leveling option for a quality finish on RV roofs
- Flows well into necessary areas to permanently seal them
- Do not crack, leak or peel
- Easy and comfortable to use on your RV roof
Cons
- Not ideal for vertical use due to consistency
- Does not keep well if not stored optimally
3. Premier Pro Products RV Roof Sealant – Best “No Caulk Gun” RV Roof Sealant
Features
- Easy to apply and works well for numerous applications
- Completely encapsulates seams and fasteners Tough physical properties – high tensile strength and excellent elongation ideal for RV roofs
- Excellent sag resistance keeping your RV roof secure and stable
- 100% solids, solvent-free and isocyanate-free
This universal roof repair sealant works great for a variety of applications. It works wonders on RV roof repairs, a useful and handy product that gets the job done.
One pouch goes further than your average caulk option; there is also no need for a caulk gun to apply, making it easy to use.
The fact that the bag can be resealed and the balance used later makes it a real value for money.
What We Like
You get a lot of sealant in one bag. You can seal multiple openings on the roof of your camper with just one bag with more leftover. It adheres well to a variety of surfaces.
However, it is essential to prepare your RV well before use for success with this product.
This sealant comes with an applicator tip that does not get clogged up after multiple uses on your camper. The ability to recap the bag and be able to use it again weeks later is convenient.
What We Don’t Like
Despite saying it is self-leveling it does not level or smooth out like other products. It tends to stay in a higher profile making for an uneven finish.
It takes quite a bit of effort and technique in squeezing the bag to apply it and it does tend to hurt your hands.
This does not make for comfortable working on your RV.
Pros
- A large amount of sealant in one bag
- Adheres well to prepared surfaces
- Convenient applicator tip that does not clog
- Can be resealed and used later
Cons
- Not self-leveling finishes in a high profile
- Not comfortable use
4. ToughGrade Self-Leveling RV Lap Sealant – Best Multifunction RV Roof Sealant
Features
- A self-leveling sealant
- This option seals well along roof edges, around vent covers, vent pipes, air conditioners, and screw heads.
- UV-stabilized to prevent deterioration and discoloration
- Best for use on horizontal surfaces
This sealant helps create a seal along a roof’s edges, around air vents, vent pipes as well as screw heads. It is compatible with any roofing material adding to its versatility.
It offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete, all common RV roof materials. This option has the ability to continuously seal and remain flexible.
What We Like
This sealant comes in the right delivery method in the form of a large caulking gun tube for easy application. It flows just right with good consistency.
It has just enough leveling to settle into any cracks and seams, but it is stiff enough to stay in place on sealing your RV roof.
It dries with a flexible, rubber-like feel, but with great adhesion. Edges seal down hard and it sheds water great, which is what you want for your camper roof.
What We Don’t Like
When working on your RV roof, you would like your sealant to work fairly quickly and cure in good time, but sadly this option seems to take an unnaturally long time to cure.
Fumes of this product are also quite strong, and while you will likely be working outdoors on your RV this option will still get to your nose with its strong smell.
Pros
- Easy to apply
- Good consistency
- Levels well and stiff enough to seal RV roofs effectively
- Sheds water well
Cons
- Takes a long time to cure
- Strong smelling sealant
5. EternaBond RoofSeal White 4″ x50′ MicroSealant UV Stable Seam Repair Tape – Best RV Sealant Tape
Features
- Simple and quick one-step repair making it easy to use
- No additional sealing is required with this option
- Excellent UV resistance that withstands deterioration
- Multi-use that works well for RV roofs
EternaBond bonds to virtually any surface, making it ideal for camper roof repairs. Its long shelf life means that you can use the rollover for an extended period with certainty of its effectiveness.
The micro sealant makes it a stable sealing option that handles nature and the elements well and provides long-lasting repairs.
What We Like
This option seals your roof without the slightest doubt. Its adhesion is fantastic and provided the surface is cleaned properly, it will stick perfectly every time.
It makes the roof look clean and tidy again with its neat finish.
One roll of this sealant really goes a long way and can help you seal most of your RV roof in one go. This sealant bonds to a variety of surfaces ideal for all areas of your camper roof.
A micro sealant is a more stable option that allows for long-lasting repairs and handles the elements well.
What We Don’t Like
Be careful with the alignment of this sealant. Once it touches anything, it is almost impossible to reposition.
The key is to take your time and make sure the surface is perfectly clean before applying this sealant and try to avoid getting any air trapped or you will have a rough finished RV roof.
It does not work well to go around vents – the curves make it too messy so it may not work well for your full camper roof.
Pros
- Very good adhesive
- Neat finish
- One roll is long-lasting
- Microsealant is a stable option
Cons
- Hard to reposition if incorrectly placed
- Does not work well for curved areas
In Conclusion
With all these great RV roof sealant options, you are sure to have found one that will suit your needs. Our top recommendation has to be Sikaflex-221, it is the overall better performer of our options.
It is ideal for RV roof sealing with its ability to adhere to multiple surfaces successfully and seal them for good.
Its one-component formula makes it an easy-to-use choice that does not crack, leak or peel. It can be painted over, meaning your RV roof will have the quality finish it deserves.
Your RV roof will stay in great condition through all seasons with this RV roof sealant.
RV Roof Coating
Thursday 30th of June 2022
There are several products available for RV owners to repair leaks and extend the life of their roof. We have an older RV with a rubber roof that was starting to leak in some damaged areas. Replaced some caulk around the AC and vents and recoated it myself two years ago with easy to use products I found online and it has been good since. Still have some product left. It’s RV roof magic. The one coat process was a big benefit to me.