How to Seal an RV Roof

Have you ever had an RV roof leak? If you haven’t, then you don’t know what it feels like when water starts pouring into your living space. It’s not fun.

Whether you’re driving across the country, or just taking a weekend trip, there’s nothing worse than getting caught in the rain and having a leaky roof.

Luckily, there are some simple things you can do to prevent your RV roof from leaking. In fact, you can seal an RV roof leak fast!

What should I use to seal my RV roof?

You may choose a different sealant depending on the type of roof you have on your RV. Here are the best sealants depending on your roof type:

  1. Rubber RV Roof – The most ideal products to take care of rubber RV roofs are Dicor and EPDM coatings. 
  2. Fiberglass RV Roof – Silicone sealants work best. I also recommend placing a gel coat over it once you’re done.
  3. Aluminum RV Roof – Use a special coating like the Dicor Metal RV roof coating – It forms a rubber-like top layer on the roof and is resistant to rust or mildew.

The 8 Best Roof Sealants for Your RV

  1. EternaBond Tape Micro Sealant
    MicroSealant® Technology are specially-formulated sealants that form a stable molecular structure that is light, heat and ozone resistant. This formulation consists of synthetic polymers with a built-in primer and wide-temperature resistance that forms an instant bond to most substrates that creates a waterproof seal.
  2. Geocel ProFlexRV Flexible Sealant
    Pro Flex® RV Flexible Sealant is specifically designed for the recreational vehicle industry. It can be exposed to adverse weather conditions right after application. Pro Flex® RV Sealant has excellent expansion and contraction properties to withstand the joint movement and temperature changes associated with recreational vehicles. It bonds to many recreational vehicle materials, even damp, slightly oily, or frozen surfaces.
  3. Dicor Rubber Roof Acrylic Coating
    Superior weatherability, ultraviolet resistance, fire retardancy, elongation, flexibility, adhesion, and ease of application make the Dicor Acrylic Coating System an excellent protective elastomeric barrier to enhance the aesthetics and renew the surface of existing RV roofs.
  4. Pro Guard Liquid Roof
    Liquid Roof® is a true EPDM rubber and therefore could be described as a liquid version of the single ply EPDM membrane that has established an outstanding performance record for over 30 years. The EPDM chemistry has two unique features not possessed by any other rubber: It is unaffected by ultra-violet and ozone, and can tolerate continuous exposure at temperatures over 300 degrees F. 
  5. Liquid Rubber RV Roof Coating
    Liquid Rubber RV Roof Coating is a water based coating to fix any leaks or holes in your RV roof. Gain confidence in your RV roof on any of your trips.
  6. Dicor Self-Leveling Lap Sealant
    Dicor’s HAPS Free Self-Leveling Lap Sealant creates a secure, secondary seal along the roof’s edges, air vents, vent pipes and screw heads. Compatible with EPDM, TPO and PVC membranes, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete.
  7. Heng’s Rubber Roof Coating
    Formulated from 100% acrylic latex polymer and used to seal EDPM rubber roofs, Heng’s rubber roof coating is an excellent quality product for your roofing needs. Used as a protective coating over rubber roofs, at seams, tears, and to seal vents and air conditioners, it provides great quality weatherproofing and sealing.
  8. Rust-Oleum LeakSeal Rubber Coating
    Repair and prevent leaks on a wide range of demanding surfaces with Rust-Oleum® LeakSeal® Spray. This rubberized coating seals cracks, fills small holes and provides firm-but-flexible protection against moisture and rust on surfaces that need it most.

What to do before sealing your RV roof

  1. Clean your roof thoroughly
  2. Find which sealants are compatible with your roof material
  3. Seal anything sticking through the roof such as antennas, vents, and others that may require fixing
  4. Repair ripped or torn areas with fiberglass repair tape

Can I reseal my RV roof myself?

In order to reseal your RV roof, clean the top of your RV thoroughly to get rid of any dirt buildup. Next, repair structural damage, such as cracks, with repair tape. Then, seal any vents and antenna. Finally, apply a self-leveling sealant that suits your roof type (using the wrong one could cause serious damage)

How often should you seal RV roof?

About every two to four years is ideal, depending on the kind of weather you have and the type of environment you drive through on a regular basis. Certain kinds of climates can cause more wear and tear on the roof than others. And always, after a large storm or heavy snow, inspect the roof for damage.

Can I use Flex Seal on my RV roof?

The members of the Flex Seal family of products are silicone-based. Silicone is not what you want to use on your RV’s roof because it leaves a residue that NOTHING else can stick to (including more silicone!), which bodes very poorly for any future repairs.

Can you put Kool Seal on a rubber RV roof?

Two coats recommended. Must be top coated with Kool Seal RV Elastomeric Finish Coats. Metal, EPDM and other single ply membranes, modified bitymen, polyurethane foam, concrete, rubber roofs and previously coated surfaces. Do NOT use over asphalt shingles or silicone coatings.

How much does it cost to reseal a camper roof?

Recoating your roof yourself will cost you around $500 while having it done for you will cost around $1500-2000.

How do you clean an RV roof before sealing?

Remove all loose caulking or sealants. Caulking or sealants that are in good condition and adhering well can remain in place. Pressure wash or scrub with a deck brush, the entire roof surface using warm water and Tide® powdered laundry detergent.

Can you walk on a rubber RV roof?

Crawl Instead of Walk – Since you will be trying to stay near the edge of the roof since that is the strongest area of the roof it is safer to crawl than walk in those areas. Never Walk on a Wet Roof – Obviously, an RV roof is slippery when wet! Especially if it is made of fiberglass.