RV windows are excellent for letting in light and giving your vehicle a sense of spaciousness and airiness. When you open them, they’ll let in some fresh air. All RVers hate drafty windows, so it’s critical to use the best RV window sealant available.
There are numerous sealants and caulking products on the market, and the majority of them will work well. However, some stand out above others. Take a look at our top recommendation, as well as a couple of excellent runner-ups, below.
9 Best RV Window Sealant & Features for The Money 2022
When it comes to keeping the elements out, and RV’s windows are one of its most vulnerable spots. They’re a soft, see-out point that can be easily damaged by the elements. An RV window seal is the best way to keep the elements at bay and make sure they’re not able to get in.
Agree? Then you know the importance of investing in a quality seal. Luckily, there’s a wide range of sealants on the market that offer great protection. With that in mind, we’ve rounded up the top 9 RV window sealants you can choose from today.
1. Permatex 81730 Flowable Silicone Windshield and Glass Sealer
Permatex forms a tough, waterproof, durable, clear seal resistant to weather, extreme temperatures, vibration, and shock.
Water damage is the last thing on your mind when travelling in your RV. Water damage is one of the most difficult types of damage to repair, so prevention is always preferable to cure. Thanks to this sealer, you’ll never have to worry about water damage again.
One tube of Permatex Windshield & Glass Sealant costs only $1.50. It’s also highly tough and waterproof, so you may use it in any environment. It can also tolerate exposure to corrosive acids and solvents.
If this is your first time applying RV window sealant, you may be concerned about the difficulty. This sealer is a breeze to use. The “flowability” characteristic is to thank you for it. The sealant can get into even the tiniest cracks and crevices with this characteristic. Your car will be smooth and free of dings and dings when you get inside.
When applying a sealant for the first time, many individuals are concerned that it would make their RV seem unattractive. Because this product is entirely clear even after drying, it will not have this issue. It takes 30 minutes for the product to dry, which is longer than most. In the end, it’s a modest price to pay for such a high-quality item.
This product has the added benefit of being versatile. You can also use it for sunroofs, lights, and other applications. This product can be used for any application where a sealant is required.
You may need to apply a second layer of this product. However, drying time isn’t an issue because it only takes 30 minutes.
- Resistant to weather
2. Gorilla Multipurpose Silicone Sealant
Gorilla silicone sealant is ready for water exposure in just 30 minutes, and this waterproof sealant is mould & mildew resistant.
There are several silicone sealants today, but Gorilla Multipurpose Silicone Sealant is one of the most cost-effective at 2.8 ounces. Despite this, the product nevertheless has a high level of quality. It’s up there with the best of the best.
Gorilla’s sealant differs significantly from other sealants in this regard. In contrast to other sealants, Gorilla is manufactured entirely of silicone. The adhesive sealants are stronger. Therefore this isn’t a good substitute. Flexibility and ability to adapt to any shape make it excellent at filling in the gaps.
In addition, silicone increases the sealant’s tensile strength and durability over competing materials. As a result, it can resist even the harshest weather. It is particularly resistant to water.
Gorilla, like its predecessor, dries transparently, so you don’t have to be concerned about it making your windows seem bad. It has to dry for around 30 minutes before it can be submerged in water. A few hours later, it’s still not dry. It will get a lot more powerful in the next few hours. Waiting for your RV to dry completely is a sensible decision.
After using the product, check sure the lid is tightly closed. The sealant will dry out very fast if this is not the case. An expensive, long-lasting tube would be squandered in such an absurd manner.
- Won’t yellow over time
- Mould & mildew resistant
3. Dicor 501LSW Self-Leveling Lap Sealant
Dicor assists in forming a seal around the margins of a roof, around air vents, vent pipes, and screw heads.
Because this RV roof sealant from Dicor is self-levelling, you don’t have to get your hands dirty while applying it to RV roofs. Pumping out the Dicor lap sealant is a breeze. It also has the consistency of a somewhat runny toothpaste, so it is so easy to level on the surface.
The Dicor RV caulk can be used as a secondary sealant; however, it is not recommended as the primary sealer. You can use this RV trim sealant over the existing caulking to ensure that your RV’s roof is entirely watertight. Your vehicle’s lifespan will increase as moisture can’t get inside.
This sealer is capable of adhering to a wide range of RV materials. Even if your car has an EPDM rubber roof, it will stick well. Even galvanized metals can be treated with this product.
This RV caulking product also benefits from not hardening after application to remain flexible for some time after use. Because of its incredible flexibility, it can be used on seams that are frequently subjected to jolting.
- Compatible with any type of roofing material
- offers excellent adhesion
- Flexible seal
- UV stabilized
4. 3M Marine Adhesive Sealant 4000 UV
This sensitive surface tape with a mild adhesive adheres for up to 60 days and then easily peels away without leaving any sticky residue.
3M’s marine caulk is an excellent option if you’re looking for an RV caulk with superior UV protection. It has a medium-strength bond and is easy to disassemble, but it also has excellent waterproofing properties.
This silane-modified polymer can be used on aluminium, gel coat, wood, and fibreglass, and it will completely seal against the weather. Unlike many other sealants, this one can be painted right after application for a harmonious finish.
This elastomeric sealant is designed to withstand the vibrations, swelling, and shrinking of your RV’s exterior. Your sealant will not be destroyed due to exposure to UV rays, temperature changes, and other elements of nature, such as driving.
No other product has a better waterproof seal with such great UV resistance. This sealer is good for most RV exteriors because it can withstand vibrations, traffic, and temperature thanks to its strong, rubbery seal and great durability. However, it costs a lot more than most other options out there.
Applying the product might also be challenging, especially for first-time users. Caulk can be tricky to deal with at first, but with a little expertise, you should be able to remove it with ease for reworking or seam repairs.
- Superior UV resistant
- Edge-lock technology
5. ToughGrade Self-Leveling RV Lap Sealant
ToughGrade is a quality RV caulk for sealing your rubber roof seams.
This four-pack of ToughGrade’s Self-Leveling RV Lap Sealant is a simple and easy-to-use option for resealing your entire motorhome roof. This well-known sealer, which is ideal for rubber roofs on RVs, is also suitable for use on most other types of roofs.
Many different materials can be joined together with the help of this adhesive. Examples of these include aluminium, galvanized steel, vinyl and wood. As an alternative to sealing your EPDM roof, you may also use it to cover your vents and pipes or the screw heads on your air conditioners. This sealant’s self-levelling composition makes it easier to apply and better weather protection.
Protects against the sun’s harmful rays. This keeps it from yellowing and splitting in the sun, ensuring that your RV is safe and well protected. This also aids in the sealant’s ability to maintain its flexibility and provide a long-lasting seal.
With a regular caulk gun, this RV sealer is easy to apply. Some other products, on the other hand, are easier to level. So, you may need to use a putty knife to help spread it out a bit.
- UV stabilized resistant
- Premium adhesive
- Universal compatibility
6. XFASTEN SILICONE SEALANT
With enhanced adhesion, maximum flexibility, and superior sheer stress resistance, the XFasten silicone sealant will not shrink or split even when exposed to freezing conditions for an extended time.
The Xfasten silicone sealer is a fantastic choice when it comes to sealants. Both your RV and your house can be sealed with this sealant. An industrial-strength caulk that can withstand temperatures as low as -40 degrees Fahrenheit is what you’ll find here.
It can be applied to virtually any surface. Metal, granite, stone, and wood are just a few materials that fall under this category. Up to 15 years of protection can be expected from this product. It doesn’t shrink or crack, and it sets up rapidly.
When shopping for caulk, keep in mind the colour of the caulk you want to use. The only colour available for this sealant is black. The hue of other adhesives might range from white to tan to grey or even clear.
- Industrial grade waterproofing
- Easy to use
- Thick and flexible
- High-pressure resistant cartridge
7. Liquid Rubber Leak Repair Sealant for RVs
Once cured, Liquid Rubber Waterproof Sealant demonstrates exceptional flexibility. With an elongation of over 1000 per cent, you never have to worry about minor movement undoing all your hard work.
You can use a liquid rubber multi-surface leak repair sealer to cover a greater area if you wish to seal the roof. The long-lasting sealer is used to guard against leaks and protect vulnerable places such as air ducts, skylights, vents, roof edges, and vent pipes.
If you’re unsure where the leak is but still want to seal the area in question, this is a fantastic option.
Remember that even though this sealant is referred to as liquid rubber, it can degrade over time due to exposure to sunshine and other environmental factors. As a result, you will have to renew regularly. To determine how often to do this, consider how much sun and additional outdoor exposure you get.
As the last point, keep your camper covered or in a garage when it is not used to preserve its life and avoid problems.
- Environmental friendly
- Easy to use
8. Versachem 75009 Flowable Windshield Silicone
Versachem Flowable Silicone is a solvent-free silicone that flows into cracks and seams to form a transparent, durable, flexible, and airtight seal.
For use on glass, metal, rubber, wood, and plastic, Versachem Windshield and Glass Sealant are available in a 1.5-ounce tube with various applications. It’s a fantastic sealer because it’s such a strong adhesive.
Like many other sealants, this sealant is extremely long-lasting. It’s impervious to water. It’s also easy to apply.
The “flowability” attribute of the Permatex product is also included in this one. As a result, the product is extremely flexible and can reach even the tiniest and most difficult-to-reach areas.
Using the car is possible after the product has dried for an hour. Waiting for the sealant to dry completely for at least 24 hours is often advised.
- Resistant to weather
- Vibration absorption
- Works on glass, wood, metal, rubber, etc.
9. Sashco 13010 Sashco Sealants Clear Lexel Adhesive Caulk
Lexel is the ideal weapon; it is an indoor/outdoor sealer that adheres to challenging surfaces and blends in with anything.
This Lexel RV caulk is also extremely durable, as evidenced by the many households that employ it. If you’re looking for a tear-resistant sealant, this is one of the best options available. It’s not only stain-resistant, but it’s also crack-resistant.
It’s mould-resistant and water-resistant. No mould or mildew will form on this sealer. The caulk is constructed of components that prevent them. Camping is beneficial and healthful.
Avoid applying this product inside as well. Make sure no one is inside the RV when you utilize it for indoor uses if you require it. Make sure to open all of the windows and doors to get rid of the scent. As a result, the odour will not remain.
- Freeze-thaw stability
Getting the best RV window sealant is not a problem if you know what you want. So, with our list above, you shouldn’t face any challenges.
Remember that liquid rubber roof sealant or sealant tape is your best bet if you cover larger areas or aren’t sure where the leak is coming from. To establish a long-lasting seal, caulk should be applied around the edges of the sealant tape.