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The 5 Best RV Roof Sealants for Leak-Proof Travels

The best days spent RVing are when it’s nice and sunny out. But, there are also times when it’s nice to sit inside and listen to an epic thunderstorm while playing a game with your family, as long as there’s no wind accompanying that thunderstorm.

If you want to make sure your game-playing thunderstorm days stay enjoyable, be sure to inspect your roof for any damage or cracked seals before taking off on your adventure.

Don’t panic if you find areas that need to be repaired. Keep reading for our top picks of the best RV roof sealants to keep you worry-free.

A caulk gun and tubes of sealant. Best RV roof sealant.

Our Top Picks

Best Overall
Dicor Lap Sealant

Budget Option
Easy 2HD RV Sealant

Best Sealant Tape
EternaBond Roof Seal

Best Overall

Dicor Lap Sealant

Dicor 501LSW-1 Epdm Self-Leveling Lap Sealant-10.3 Oz. Tube, White, 10.3 Fluid_Ounces (Packaging May Vary)

Dicor Self-Leveling Lap Sealant takes our prize for the best RV roof sealant. Dicor has been well-known in the RV roofing industry since 1984, so they’ve had several decades to perfect their product. In fact, Dicor sealants are made specifically for RVs, so you can’t go wrong there.

Dicor lap sealants are made for all RV roof types and come in self-leveling and non-leveling formulas. For your roof, you’ll want the self-leveling sealant. Once you run your bead of roof sealant, it will level itself out and fill in any small gaps.

Keep in mind, that this is not a RV roof sealant for large gaps or holes. For that, you’ll need a cover patch kit.

It’s designed for use on horizontal surfaces and can be used around roof vents, AC units, vent pipes, and screw heads.

The Dicor lap sealant only comes in white, but it’s on your roof, so chances are you’re the only one who will see if it doesn’t match exactly. And, it would be nice if it came in a smaller size tube that doesn’t require pulling out a caulking gun for quick fixes while you’re on the road.


  • Self-leveling
  • Can be used on all roof types


  • Only comes in white
  • Like most sealants, only comes in 10 oz tube

Budget Option

Easy 2HD RV Sealant

Eazy2hD 4 Packs RV Sealant Caulking Self Leveling for RV Roofs, RV White Flexible Repair Lap Sealant for Rubber Roof on Trailers, Motorhomes, Campers

Although at first glance, the cost of the Easy 2HD RV roof sealant may not look like a budget option, keep in mind you’re getting four tubes of sealant instead of just one.

Easy 2HD sealant is thick and easy to use. Because it is so thick, it may not self-level. An easy fix for this is just to use a caulk tool to help smooth out the sealant. The caulk tool will also help you remove any old caulk before repairing your site.

If you’re looking for a quick fix at a budget price, the Easy 2HD RV sealant is a great option. But, keep in mind that you get what you pay for. A budget price may mean it doesn’t hold up as well as our other options on this list of best RV roof sealants.


  • Price per tube
  • Easy to use


  • Only comes in a 4-pack
  • Thick so may not self-level

Best Sealant Tape

EternaBond Roof Seal

EternaBond RoofSeal White 4" x50' MicroSealant UV Stable RV Roof Seal Repair Tape | 35 mil Total Thickness - EB-RW040-50R - One-Step Durable, Waterproof and Airtight Sealant

With descriptions like advanced micro-sealant, excellent UV resistance, and easy to use, EternaBond takes our award for the best RV roof sealant tape.

So what does “micro-sealant” even mean? Glad you asked. This micro-sealant tape consists of a unique molecular structure making it extremely durable so that your repair lasts longer.

Because this is a tape it is easier to use and less messy than caulk. It also doesn’t require any special tools like a caulking gun. And, it’s easy to store away in your RV tool kit for quick repairs.

EternaBond Roof Seal does not stick to silicone. If you have an area that has been previously repaired with a silicone sealant, either use a wider tape to cover the entire area or remove the sealant before using this RV roof sealant.

Before sticking EternaBond to your roof, make sure you have it placed exactly where you want it. Once it’s down, it’s not coming up!

As a bonus, EternaBond can be used to repair your RV awning in case you forget to bring it in before the thunderstorm starts.


  • Easy to apply
  • No special tools needed
  • Comes in different colors


  • Doesn’t seal over silicone
  • Once it’s down, there’s no adjusting it

Best for Color Options

Lippert Components Lap Sealant

Lippert Components 1021 Self-Leveling Lap Sealant for 5th Wheel RVs, Travel Trailers and Motorhomes

If you would like your RV roof sealant to match the color of your roof and not just be plain white, reach for Lippert Components Lap Sealant.

Like the other sealants on our list, this is a self-leveling RV roof sealant that is applied with a caulk gun. Unlike the other sealants that only come in white, with Lippert you get to choose from five different colors.

It has excellent adhesion on rubber, metal, and fiberglass roofs. And is made to withstand the stress of your RV traveling down the highway.


  • Several colors to choose from
  • Easy to apply


  • May not work on all roof materials

Best All-in-One

Ziollo Flex Repair Kit

Ziollo RV Flex Repair Tape Kit - Roof Repair Kit to Seal and Waterproof, Bond to EPDM Rubber with Butyl Sealant, Seal Vents and Skylights on Motorhomes, Trailers, Campers (1 Tape, 1 Tube and 1 G Can)

So what happens when you’re checking out your RV roof and realize the area that needs to be fixed is a little more extensive than a small crack? That’s when you break out the big guns and go all in with the Ziollo Repair Kit.

This kit includes a tube of caulk, a roll of tape, a brayer for applying the tape, and a gallon of roof sealant.

The Ziollo Repair Kit works on rubber, TPO, metal, and fiberglass roofs. It can be applied over your current caulk. You only have to clean and rough up the surface, not remove the old caulk. The only thing it doesn’t stick to is silicone.

As for warranties, the Ziollo has a lifetime warranty. You can’t beat that!


  • All in one kit
  • Lifetime warranty


  • Only comes in white

RV Roof Sealant Buyer’s Guide

Man inspecting the roof of an RV.

Roof type

Not all RV roof sealants are the same. Before purchasing a sealant for your roof, you need to know what kind of roof you have.

Most RVs have rubber roofs, but not all do. Be sure to check your owner’s manual and purchase the correct sealant for your roof type. Using the wrong sealant can damage your roof.

Non-Sag vs Self-Leveling Sealant

View of an RV roof with an open vent.

As you’ve probably noticed, there seems to be two different kinds of sealant: non-sag sealant, and self-leveling sealant. So, which one do you need?

That depends on if you’re sealing a leak that is horizontal, like your roof; or one that is vertical or overhead, like along the ceiling and windows.

Non-sag sealant does not level out, or change its shape. Self-leveling sealant starts off thicker and then levels itself out to a uniform level to cover seams.

Because this post is specifically about RV roof sealants, we only compared self-leveling sealants.

RV Roof Sealant Frequently Asked Questions

Man using a tool to scrape around an opening in an RV roof.

Are there tips for applying sealant?

One of the most important tips for applying RV roof sealant is to remove the old caulk and clean your area. You can use a caulk tool to help with this job.

For the best adhesion, apply the sealant when the temperature is between 50 and 70 degrees Fahrenheit.

You’ll also need to clean the area. You can use a mild detergent and water, or a commercial product like Simple Green. If using RV roof sealant on a fiberglass roof, it is a good idea to rough the surface before applying it.

Person power-washing an RV root.

Why can’t I just use caulk to fix my leak?

Lap sealants are specifically designed for RVs. These RV roof sealants are made to be flexible as your RV travels down the road.

Caulk, on the other hand, doesn’t have to endure the rigors of travel. It dries stiffer, so is better suited for areas that don’t move.

If I’m going to coat my roof, do I use sealant before or after the coating?

If you’re going to coat your entire roof, make sure to seal around your AC unit, pipes, and other items on the roof before applying your roof coat. If it

makes you feel better, you can also apply your RV roof sealant after applying your roof coating.

Wrapping up Best RV Roof Sealants

Person opening an RV air ceiling vent.

Now that you know more about the best RV roof sealants, you can rest easy knowing you’re not going to be awakened by a drip of water on your forehead in the middle of the night. However, if that happens, you also know how to fix the leak.

So, where are you headed next? If you need help deciding, we have lots of great RV camping site ideas to choose from.