Liquid EPDM Rubber


LIQUID EPDM RUBBER COATINGS

PERFORMANCE AND APPLICATIONS

EPDM is a synthetic elastomer made by combining ethylene and propylene with a diene monomer attached. This polymer (when crosslinked) is a very good moisture barrier, resistant to oxidation and UV degradation but its most important property is its ability to tolerate both low as well as high temperatures (from minus 62 to plus 350 degrees Fahrenheit). EPDM rubber is used exclusively for radiator hoses, freezer gaskets and low temperature seals, steam hoses, and rubber roofing membranes. It is also blended with other rubbers to improve their properties. A multitude of products are now better and last longer because of the contribution made by EPDM rubber.

EPDM Rubber Coatings

Liquid EPDM coatings require a lower molecular weight polymer than is used in the molded products mentioned above. But the other and even more important requirement is its ability to cure at ambient temperatures. The development work on liquid EPDM coatings began in 1990 and the following year the first commercially manufactured EPDM coating became available. Numerous incremental improvements were made over the next several years but the most significant improvements resulted after the discovery of several new catalysts. The products now cure faster, produce better film properties, meet the California VOC restrictions, do not need special hazard labeling, have excellent storage stability, and are environmentally friendly.

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How does EPDM rubber compare to other coating types?

Water resistance

EPDM is better than epoxies, urethanes, acrylics, Polyesters and alkyds at equal film thicknesses and is not affected by continuous immersion.

UV resistance

Equal or better than acrylics, polyesters and Urethanes; much better than alkyds and epoxies.

Temperature tolerance

EPDM is better than all other coating polymers except Silicones. EPDM can withstand live steam as well as cryogenic temperatures.

Flexibility

EPDM is better than all other coating polymers except Silicones. EPDM can withstand live steam as well as cryogenic temperatures.

Chemical Resistance

EPDM has very good resistance to strong alkali’s, concentrated salt solutions, many acids, alcohols and polar solvents such as ketones. EPDM has poor resistance to oils, fats, waxes and hydrocarbon solvents.

Surface tolerance

EPDM coatings will not bond to a surface that is damp with moisture but will bond to an oil or wax contaminated surface. EPDM coatings can also be applied directly to metal surfaces that have tightly adhering corrosion without a primer.

Where can EPDM coatings be used to their best advantage?

The unique combination of properties which EPDM coatings possess can be best utilized when they are applied to the exterior surfaces of stationary structures. Examples are:

Roofs

Metal, rubber or thermoplastic membrane, fiberglass, urethane foam, cement tile and plywood.

Metal Siding

Can be applied with little or no surface preparation as a one-coat finish on steel buildings.

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Concrete Tanks

The excellent water proofing properties of EPDM will reduce or prevent spalling of the concrete in cold climates.

Corrosive/Humid Environments

Exposed structural steel on the interior of industrial buildings with humid or corrosive environments can be coated with minimal surface preparation. Plating operations, smelters, concrete casting operations, dye works, and paper mills are just a few examples. High-density poultry and hog production operations are another good use to protect steel from the corrosive environment produced by manure.

Impoundments

Liquid EPDM coatings are a good choice for exterior spill containment structures because of their excellent weathering and broad chemical resistance properties.

Unsuitable applications for EPDM Coatings

The relatively slow cure and non aggressive adhesion of EPDM coatings make them poor candidates as factory applied finishes or as coatings for products which come in contact with each other during shipment or use. They are also not recommended for environments where they could be exposed to oils, fats, waxes or liquids with similar characteristics.

Environmental impact

EPDM rubber coatings are high solids products which meet the California VOC( volatile organic compounds restrictions. They are not water soluble in their uncured state and do not contain compounds which could find their way into the water supply. The fact that these coatings do not require primers further reduces VOC emissions and potential use of water polluting products. The durability of these coatings also lengthens. The recoat period so that their environmental impact is lessened even.









  • Testimonials

    • Fred D.

      EPDM is amazing. My RV roof was a disaster. I have been battling leaks for a few years now and no other product would stop the leaks or even last more than a few months. Everything else would peel up after awhile. I used the EPDM with the primer. It rained a week later. Zero leaks! The product goes on easy and covers well. No cracks no bubbles. I am very satisfied and would recommend this product to anyone. The are so many products out there and skepticism runs high…. Read more

    • David R. D

      Just a great product, went on easy and looks great. Just completed my 35 Bus, cut in the rap around sides and around the ACs and vents. Spent the hardest time on cleaning and prep. If you are looking for a product to seal your RV stop looking !!!! David R. DLincolnton GA

    • Stephen L

      Let me tell you this stuff if fantastic. I replaced my roof several years ago and white rubber was not available at the supply company, it was out of stock and I had to replace the rubber as I had ripped the old off. The black rubber made it miserable in here. I did a lot of research looking for a good quality coating that would last and hold up to the elements. I found your product and was convinced, so I ordered and have now applied. I did not… Read more

    • 5000 sq ft concrete roof

      5000 sq ft concrete roof. Prep work consisted of power wash of roof and preparation of seams as see in “before” picture. Approximately 7 sets of ProFlex primer was used and 28 Pails of Liquid EPDM Rubber. Cost per sq ft approx. $1.66 . Life expectancy is 18-20 before a recoat is needed.

    • Kim Stonecipher-Furr

      Hello Greg, Here are the photos, three before, during and after per your request: I will say that your product surpassed our expectations and saved us a huge $7,000 new roof cost. We had no leaks and but were informed during a free roof inspection that we needed a new roof by a local rv establishment. I discovered your website and bought your products just to be on the safe side. We applied the primer as well as the liquid roof. It is definitely something that both genders are able… Read more

  • Contact

    EPDM Coatings N.E Sales Office
    494 Bridgeport Ave Suite 101,
    PMB 342 Shelton CT 06484-4748
    Fax: 702-977-2936
    Proud Distributor of Proguard Coatings
    Tel: 1-610-298-1989
    Email: info@epdmcoatings.com
Full Stocking Distributor of Proguard Coatings
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