EPDM Liquid Roof Applications: What You Should Know

If you search for RV roofing materials, you will likely come across a lot of information and resources for EPDM liquid roofing. This is one of the most popular options for RV owners who want a cost-effective, durable roofing solution that requires little maintenance and upkeep. Other roofing materials, such as fiberglass, are going to need much more routine care, and often cost more to install and maintain over time.

What is EPDM, though?

EPDM stands for Ethylene Propylene Diene Monomer, which is just a technical term for a synthetic rubber compound. This material is highly stable and flexible, and creates a binder during the curing process to create vulcanized EPDM rubber membranes and sheeting. For liquid roofing, the binding and curing process is not completed in the manufacturing process. The compound is left in a liquid state and combined with other ingredients to allow it to air-dry and cure to a flexible, watertight seal across the entire surface of the roof.

EPDM includes added oils to assist with curing and flexibility. This is part of what makes EPDM liquid roof applications so easy and effective. However, this material is also not resistant to oils or most solvents, which means that repair and maintenance products need to be compatible with EPDM or they will cause damage and premature deterioration and aging. The leading brands of RV maintenance, cleaning, and repair products all have EPDM-compatible products, however, so that shouldn’t be difficult to find if you know what you are looking for.

DIY EPDM Liquid Roof Applications

One of the biggest selling points, for many RV owners, is that liquid roofing can be done by just about anyone. Using a brush and roller or a squeegee, you can simply pour and spread the product across your RV roof and allow it to air dry to cure after you finish. RVs aren’t the only place you will find this roofing material, although they are among the most popular for liquid roofing. EPDM is also used for:

  • Mobile homes
  • Commercial buildings
  • Any building with a low slope or flat roof

Unlike sheet roofing and seamed products, liquid roofing creates a strong, seam-free membrane across the roof, which offers more protection and requires fewer repairs over time. This, combined with its affordability and versatile application, is what makes EPDM liquid roofing such a popular choice.

Frequently Asked Questions about EPDM Liquid Roof Applications

How long does EPDM take to cure?

Drying time depends on a number of factors, including humidity, temperature, and coating thickness. Typically, EPDM will be dry to the touch within a few hours of application. Full curing usually takes about 24 hours. Plus, the formula is designed to continue curing and bonding, so it will get stronger over time.

How much is EPDM liquid roofing?

Costs vary depending on the brand and type of liquid roofing that you choose, but a single gallon ranges from about $50 to $100. You can pick up 4-gallon or 5-gallon buckets for a few hundred bucks, in most cases. Keep in mind that a single gallon provides 40-45 square feet of coverage, so you may need less than you think.

Can I use leftover liquid roofing for maintenance and repairs?

If you have more materials than you need to replace or recoat your RV roof, you can save them for future needs. However, keep in mind that an EPDM liquid product is only going to be good for about a year. After that, the formula begins to separate and cannot be remixed. It’s best to buy only what you need and pick up repair kits or small containers of liquid EPDM for any repair or maintenance needs.

Top Features of the Best RV Liquid Roof Coatings

Most RV owners want to know one thing when choosing a roof: which are the best RV roof coatings, and why? There are a number of different products on the market today, which can seem intimidating to even the most seasoned RV owner. However, each has its place and purpose. You can learn a lot about the best products by looking at the leading brands and what they offer for coatings, sealants, and other roofing products and supplies.

Although no two brands are the same, the best RV roof coatings do have similar features that make them stand out among the rest. Here are a few things to keep in mind when you are looking for the best coating for your RV roof:

  • Multi-use Option: Although there are material-specific products on the market, coatings that are designed for use with multiple materials will typically give you the most universal uses. The best products don’t become the best by only serving one market, after all. Whether or not you choose a product that can be used on various materials, this is one factor that helps products rank higher.
  • Roofing-safe Ingredients: Despite the fact that substances like citric acids and petroleum oils can be damaging to rubber roofs, some products that contain them claim to be “safe and effective” as an RV protectant, sealant, or roof coating. Make sure that you know what products are safe for your roofing surface and stick to those coatings.
  • Protective Features: The best RV roof coatings have the most protection features to offer. They should offer protection from standard things like water damage and leaks, as well as UV rays, extreme temperatures, and other elements. The more protection a roof coating offers, the better investment it will be.
  • Affordable Pricing: Although people are willing to pay for quality, the best RV roof coatings won’t make you spend a fortune. They will provide a versatile, effective coating solution that is reasonably priced. Plus, DIY products are growing in popularity so the increasing demand for competitive pricing is only going to continue to save you money.
  • Convenience and Ease of Application: For the DIYer, convenience is a must in all projects and products. The top 10 brands of RV roof coatings on the market today all offer exactly that: a simple, convenient application that doesn’t take a lot of time and effort.
  • Self-Leveling: Although application with a mop or cloth is usually effective at relatively even distribution, it doesn’t always work. Choosing a sealant or coating that self-levels as it dries allows you to avoid pooling, which can lead to worsening damage or leaks down the road. It isn’t necessarily a must-have, but when you are coating an entire roof, or even a large part of it, the self-leveling feature is convenient and provides peace of mind.

According to many RV websites and communities online, the brands that have the best RV roof coatings include:

  1. Heng’s
  2. Dicor
  3. Proguard
  4. Rubberseal
  5. Flex Seal
  6. Kool Seal

However, each brand has its own features and pros and cons to consider. Use the tips provided here to help you find the best roof coatings for your RV, no matter what you have in mind. When chosen carefully, your RV roof coating can provide years of protection from water, weather, heat, UV rays, and other extreme elements. This product essentially works as an all-season protector, keeping your roof looking and working like new despite the elements. For those who travel often and lack covered storage in extreme weather, a roof coating might be the only way to protect their RV roof for the long haul.