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Seal the skylights, vents, and other horizontal surfaces of your RV roof with this self-leveling sealant. Strong, weather-resistant formula works with rubber, metal, and fiberglass. Sealant has a longer lifespan and remains flexible for RV travel.
Features:
Specs:
Note: This product contains heptane. Keep away from sparks, heat, and open flame. Overexposure can cause nausea.
RV Sealant - Non-Sag vs Self-Leveling
The kind of sealant you apply to your RV is important. To determine the type of sealant you need for your application, you will want to consider what it is you are sealing and where it is on your RV.
Self-leveling sealant is designed to level out as you apply it. The thick liquid slowly flows into a level position as gravity takes effect. This is particularly useful when sealing flat surfaces, like around a roof vent, AC, or skylight. As you apply the sealant, gravity will cause it to settle into an even line, giving you a clean, low-profile look.
Non-sag sealant is designed to retain its shape as you apply it. The consistency of the liquid is thick but malleable enough to be easily applied without causing sagging or slumping. This is useful when sealing vertical surfaces, such as the edges of a wall, window, or vent. As you apply the sealant, it will harden just enough to keep the liquid from drooping, giving you a clean, even look.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
The Alpha product is the only product that Keystone Cougar RVs approve of for the rook material covering their rv products. It’s great to know that eTrailer has what I need at a fair price and ships quickly too. Plus expert help is always there for the asking. Well done!
Used this to finish sealing the brackets on my solar panel installation... I used Butyl tape also. Works great. Highly recommend.
I give it 5 stars only because I never had the chance to use them I bought a Lemon of a trailer. Finally was able to sell it. Not fair of me to review any lower due to someone else ripping me off.
As described and fast delivery.
Exactly what I needed received it within a day
Paired with the fan. Nice seal , no lea ks
Had never used a self-leveling sealant before. Was suprised how it settled right into the crack and sealed it up. Still dry inside after a year
We used it to seal over brackets used in installing a solar panel on the roof of our trailer. Works as it is supposed to. The self-leveling forms a kind of pool of sealant around the site. We also used butyl tape under the brackets first to seal the screw holes, then this sealant over the whole bracket.
works as expected
Works as advertised. Used on Grand Design 2950RL roof.
Great delivery speed with comprehensive updates. Fair prices for quality products.
Used less than half a tube to cover some drying checks in the original caulk. Applied easily, seems to have adhered well to the old caulk. I'm not sure about the self-leveling but I'm told it takes time.
Easy to apply. Easy to clean. Perfect for resealing around the replaced roof vent.
Definitely self leveling and appeared to adhere well and leveled out quite nicely so definitely approve of alpha 1021
You can't just buy this from anywhere and I always trust e-trailer to come through which they always do. The sealants worked extremely well and I am happy with the product.
More importantly, etrailer knows how to ship their products. Ordered the same item on Amazon (3rd party reseller) and it arrived with the spout broken due to poor packaging. etrailer carefully packaged the tube to prevent damage.
That’s 5 stars for excellent and easy installation took all of 15 min. Used old screws from my old vent. Now my R.V. Looks new again. The sealant was fast and dried in about 4min. Work fast.
Received the case and some tubes had exploded inside
Easy to apply, great seal. This was used in conjunction with installing a new fan, fabulous product.
Keys fit perfect. The trailer mounts are strong and easy to use. Service is impeccable.
It levels, it seals, and if you at even attempt to apply the absolute minimum amount of effort possible- it'll be 10x better than how it rolled off the line.
It works great. No leaks
The parts were perfect. Great job by e-trailer. I will never look anywhere else.
Worked well. thought it would lay flatter when leveled out but I’m sure it will perform as intended.
Lazer S.
2/17/2026
Glad it worked well for you, Ron! What kind of RV/camper did you install it on?
This material is easy to work with and really seals. Just be sure to clean the place you will be using well, as the instructions say.
Richard
5/26/2026
Still holding great!
Lazer S.
5/26/2026
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.
Robert S.
11/3/2023
Seems to be holding up very well