- Updated Feb 10, 2020
- Writen by Edward Miller
7 Best RV Roof Sealants of 2020
- Updated Aug 20, 2018
- Writen by Edward Miller
One of the major advantages of having an RV is that it offers you a roof over your head, while you're on the road. So, it's necessary to keep your RV's roof well maintained.
As time goes by, you'll discover either cracks or other aging signs affecting your RV roof, so you'll need to take care of it to prevent further deterioration.
A leaking RV roof is not just bad because it lets water get inside, it can also damage your entire RV drastically and cut its market value.
This best RV roof sealants review provides you with all the right information you need to keep up your RV's roof, as well as a list of the best sealants in the market.
- 7 Best RV Roof Sealants – Reviews
- 1. Dicor 501LSW-1 – Self-leveling Sealant in Applicator Tube
- 2. EternaBond RSW-4-50 – UV Stable & Super Flexible Sealant Tape
- 3. Geocel GC28100 – Flexible and Non-cracking RV Roof Sealant
- 4. Geocel GC24200 – Multi-purpose Brushable Sealer
- 5. Proguard F99911 – Liquid EPDM Rubber Sealant
- 6. ToughGrade 502-LSW – 4-Pack Tubes of Self-leveling Sealant
- 7. Proguard F9991-4 – A Large Bucket of Liquid EPDM Roof Sealant
- How to Buy the Best RV Roof Sealants
7 Best RV Roof Sealants – Reviews
1. Dicor 501LSW-1 (Self-leveling Sealant in Applicator Tube)
2. EternaBond RSW-4-50 (UV Stable & Super Flexible Sealant Tape)
3. Geocel GC28100 (Flexible and Non-cracking RV Roof Sealant)
4. Geocel GC24200 (Multi-purpose Brushable Sealer)
5. Proguard F99911 (Liquid EPDM Rubber Sealant)
6. ToughGrade 502-LSW (4-Pack Tubes of Self Leveling Sealant)
7. Proguard F9991-4 (A Large Bucket of Liquid EPDM Roof Sealant)
1. Dicor 501LSW-1
(Self-leveling Sealant in Applicator Tube)
2. EternaBond RSW-4-50
(UV Stable & Super Flexible Sealant Tape)
3. Geocel GC28100
(Flexible and Non-cracking RV Roof Sealant)
4. Geocel GC24200
(Multi-purpose Brushable Sealer)
5. Proguard F99911
(Liquid EPDM Rubber Sealant)
6. ToughGrade 502-LSW
(4-Pack Tubes of Self Leveling Sealant)
7. Proguard F9991-4
(A Large Bucket of Liquid EPDM Roof Sealant)
1. Dicor 501LSW-1 – Self-leveling Sealant in Applicator Tube
Many RV and trailer owners turn to Dicor when it's time to seal their roof edges, vent pipes, air vents and anything else that's important.
The Dicor 501LSW-1 is one of the best self-leveling RV roof sealants, so you get a nice and clean seal every time. Although this offer is for the white color, Dicor lap sealants are color-matched, allowing you to choose from a variety of available colors.
It sticks very tightly to different materials, including EPDM, TPO, mortar, aluminum, fiberglass, vinyl, concrete and lots more. Usage of this sealant is simple and it skins over after you apply it in just 5 minutes, gets waterproof in 4 hours and is 80% cured by 48 hours.
For 100% cure though, you'll need to wait for a full month. This offer is for the 8-oz tube, which is okay for minor repairs. You might need up to 10 tubes or more to seal your entire RV, depending on its size.
2. EternaBond RSW-4-50 – UV Stable & Super Flexible Sealant Tape
Sometimes, a simple tape is all you need to seal your leaking RV rooftop and this RoofSeal tape from EternaBond is not just a good RV roof sealant, but it's also very flexible, being able to stretch up to 700%.
You can use it on a variety of rooftops, including EPDM, TPO, PVC, wood, concrete, metals, and more. It will even work inside ponds because it comes with a built-in primer that allows it to bond perfectly with any surface it's installed on.
The highlight of this tape though is its specialized backing, which is very UV stable and has been proven to last up to 19 years under full sunlight.
RoofSeal is available in 2-inch, 4-inch, and 6-inch widths. Each one is 50 feet long and this offer is for the 4-inch width. It's a great tape, a little pricey, but it's worth it.
3. Geocel GC28100 – Flexible and Non-cracking RV Roof Sealant
One outstanding feature of this roof sealant is its ease of application and handling. The formulation is non-stringing, making it easy to apply and if you happen to make any mistakes, then it's easy to clean up as well.
It's designed for application on wood, vinyl, fiberglass, steel, aluminum, and glass. It sticks very well to most surfaces, including damp ones, and it'll not crack once cured.
Geocel makes it available in different colors, including White, Black, Almond, Clear, and so on, making it one of the best motorhome roof sealants.
You can paint it after application, you can also apply it on top of its previous application and it'll hold well. Once cured, this sealant is mildew and UV resistant.
4. Geocel GC24200 – Multi-purpose Brushable Sealer
This RV roof sealant offers a feature that's absent in most of the offers on this list. It's fibered for strength and strong enough to withstand intermittent foot traffic.
Geocel designed it for use wood, vinyl, steel, sheet metal, and similar materials. It needs no primer, so a single application is enough, and you can even paint it over when you're done.
It's also mildew and UV resistant, it quickly withstands water after application and cures so fast that your RV will be ready for the road in just one hour after application. This makes it one of the best camper roof sealants in the market.
The major drawback of this camper roof sealant is that you can't use it to coat EPDM, TPO, or Polystyrene tops, else it's a very nice material with very nice and valuable features.
5. Proguard F99911 – Liquid EPDM Rubber Sealant
If you need a top-rated RV roof sealant for your RV rooftop, then this Proguard sealant is a great product to check out. The offer is for 1 gallon of the sealant, which should cover about 42-46 sq. ft of roof space.
You are free to apply it on a range of roofing materials, including EPDM, wood, aluminum, and so on. It's UV and ozone-resistant, guaranteeing you a long service life and protection as well.
It waterproofs immediately after application and doesn't get damaged by freezing or other extreme weather.
Once cured, it will also retain its flexibility for a long time, hold well against water, does not shrink or chalk with time, and Proguard backs it with a 5-year warranty.
6. ToughGrade 502-LSW – 4-Pack Tubes of Self-leveling Sealant
This offer from ToughGrade is hard to beat. Offered at such an attractive price, the 4-pack is also ideal for carrying out a complete reseal of your RV or trailer.
The sealant is UV stabilized to cut down on deterioration and discoloration, and it will easily seal along your roof edges, vent pipes, screw heads, and vent pipes.
Each of the 4 tubes has a volume of 10.3 oz and is ideal for use on all kinds of roofing materials, including aluminum and concrete.
7. Proguard F9991-4 – A Large Bucket of Liquid EPDM Roof Sealant
This offer has the same roof sealant as the offer in position #3 of this review, but where it differs is in size. What you get here is 4-gallons of the best RV rubber roof sealant and it's heavy at over 40 lbs.
Proguard's Liquid Roof sealant is a true EPDM rubber-based sealant, designed specifically for recreational vehicles. This 4-gallon offer will give you a 168 sq. ft cover of about 20-mil dry film.
The application is easy. The 4-gallon pail includes extra space on the top for the catalyst it comes with. The catalyst is pre-mixed, so you just pour it in and get to work, without needing an extra container.
Another advantage of this offer is that you get to save some money compared to buying 1-gallon sizes. Proguard backs it with a 5-year warranty.
How to Buy the Best RV Roof Sealants
There are many different kinds of RV roof sealants, designed for different situations and to get different results. This makes it necessary to know the important aspects of a sealant, so you can know how to choose the best RV roof sealant when you are ready to buy.
These aspects of an RV sealant are as follows:
1. Reason for Application
Your first consideration should concern your reason for needing to seal your RV's roofing. You could only be facing a leak, in which case you'll only need to use a tube sealant to seal it.
If, however, the roof got neglected over the years, or it has degraded on its own and the entire thing needs re-coating, then you'll be needing an entirely different product.
The level of degradation is also important because it determines how much work you'll need to put in. For example, you may only need to buy a repair tape if you just have a small rip in your RV rooftop.
2. Roofing Material
The exact kind of material used for the roof is also important because it helps in determining the best RV roof sealant that you need to buy. There are three major types of roofing materials and they are as follows:
Rubber. Rubber is the most popular type of roofing material that you'll see on RVs and for the simple reason that it's lightweight and cheap.
On the flip side, rubber RV roofs are not always structurally strong enough to support heavy weights or impacts. There are two major materials for making rubber roofs and they are EPDM and TPO
- EPDM. The name EPDM stands for Ethylene Propylene Diene Monomer. It is quite rubbery and needs no extra UV protectant but It does need regular re-coating. Over time, EPDM RV roofs start to look chalky from oxidation.
- TPO. This is the second type of RV rubber roof and it stands for Thermal Poly Olefin. It is much more rigid than EPDM and a lot more shiny as well.
Fiberglass. Fewer RV roofs get made using fiberglass than with rubber, but they do exist. Fiberglass roofs can oxidize like EPDM roofs do, but when coated with clear coat, they are vibrant and can shine.
Aluminum. Aluminum roofs are even rarer than fiberglass roofs, but they are the most stable and need the least maintenance. Aluminum roofs are heavy and so, not used much. If a repair does arise, then you'll mostly need a tube sealant.
3. Elasticity & Tear Resistance
Elasticity is a sealant's ability to twist or turn without losing its sealing properties. Tear resistance, however, refers to its raw strength and how much force it can withstand before breaking up.
This refers to both liquid sealants and tapes. For tapes, you want a material that's flexible and difficult to tear, while liquid sealants need some flexibility to accommodate changes.
You'll have to keep this in mind when making your choice of the best trailer roof sealant because you need to use the right materials in the right spots. A very rubbery sealant is ideal for joints that expand and contract, while a stronger or rigid sealant is great for areas that have to support some weight.
UV or Ultra Violet rays are non-visible radiation from the sun that causes chemical reactions in many substances. With your RV rooftop, it causes it to wear out over time.
There are two solutions here that you should combine for best results. The first is to get a roof sealant with UV-resistance to maximize its lifespan. The second solution is to get a cover for your RV, to protect it from harsh weather when not in use.
5. Ease of Application
You don't want to buy a sealant, only to realize later that you'll need something else that you don't have at hand like a primer or an activator. So, check well at first. You also want a sealant that's easy to apply and clean up when necessary.
Coming to the end of this best RV roof sealants review, you've seen all the great offers out there, as well as the different situations that they're best suited for.
Depending on whether you just have a small leak or you need to coat your entire RV roof, your choice could be a tape, a sealant tube, or a multi-gallon pail.
In the end, this choice is yours alone to make, based on your budget and your recreational vehicle's needs.