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The History of EPDM and its Reputation


EPDM (Ethylene-Propylene-Diene-Monomer)

EPDM rubber is used in vibrators and seals; glass-run channels; radiators, garden and appliance hoses; tubing; washers; belts; electrical insulation, and speaker cone surrounds. It is also used as a medium for water resistance in high-voltage polymeric cable jointing installations, roofing membrane, geomembranes, rubber mechanical goods, plastic impact modification, thermoplastic, vulcanizates, as a motor oil additive, pond liners, electrical cable-jointing, and RV roofs.

The main properties of EPDM rubber are its outstanding heat, ozone and weather resistance. The resistance to polar substances and steam are also good. It has excellent electrical properties, and has the ability to retain light color.

Liquid Rubber is designed to recoat structurally sound existing roof and protective materials. They should not be used in place of roofing membranes.

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EPDM is excellent for both new construction and roof replacement. It is capable of withstanding temperature variations from -62 degrees F to 300 degrees F without cracking or deteriorating. EPDM offers high tensile strength, extreme elongation capabilities, and is generally compatible with other materials used in most roofing applications.

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EPDM Rubber has had a long history of superior performance in hoses, molded products, tires and roofing membranes. For example, the radiator hoses in our cars and the gaskets on our freezer doors are made of EPDM rubber and show the broad temperature range the product can handle. EPDM Roofing Membranes also have more than 30 years of successful history. EPDM is relatively inexpensive, simple to install, and fairly clean to work with when compared to conventional materials, without the strong odors and fumes. The product is very stable and the resulting characteristics of Liquid EPDM include flexibility, weather ability and chemical resistance. Liquid Roof therefore, can be described as a new form of an old and well-established rubber polymer. Now you can take advantage of the same benefits to weather-tight your leaks. Liquid Roof forms a 100% seamless layer. No other product can match the durability of EPDM Liquid Roof. EPDM Rubber is essentially immune to the effects of ultraviolet and ozone and is one of the best water barriers known. EPDM rubber also has the broadest temperature tolerance, and is not water-soluble even in the uncured state. Liquid Rubber is the perfect choice for repairing or coating your Metal Roof. Even if you happen to get an unexpected rain shower just after you applied Liquid Roof there’s no need to worry; Liquid EPDM Roof will not wash off.

Liquid EPDM Rubber vs. Neoprene Rubber

EPDM rubber has only been available in liquid form for a relatively short time, so Liquid Neoprene rubber became the material of choice for protecting concrete against both fresh and salt water. The Liquid Neoprene products are simple solvent solutions or water based emulsions and therefore have low solids content and relatively low molecular weights. These limitations made multiple coat applications necessary and required top coating with other polymers to prevent ultra violet degradation.

The development of Liquid EPDM Rubber resulted in a high solids, two components chemically reactive product capable of polymerizing at ambient temperatures (55 F (13 C) and higher). This product can be applied at a 30 mil dry film (.76 mm) in a single application because of the high solids content. Its chemical cure feature then results in a high molecular weight film with protective and performance properties exceeding those of liquid applied Neoprene films.

Liquid EPDM Rubber can withstand boiling water or live steam and is inherently UV and ozone stable. The product is safer to use because of its higher flash point and the two component packaging permits extended storage at higher temperatures than liquid Neoprene. The non-polar characteristic of the EPDM also gives it advantages over Neoprene in saltwater environments as well as better resistance to cathodic disbondment. EPDM rubber has poor resistance to oils, fats, waxes and aliphatic solvents but possesses very good resistance to ketone solvents, alcohol, polar compounds, Salts, most acids up to 50 % concentration, alkalies and water. Liquid EPDM Rubber is best for repairing roofs. Liquid EPDM increases the life of your roof.

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  • Testimonials

    • Mark R. Windsor Locks, CT

      Hi Guys Your product is the greatest. I love my new roof. Anybody that would come up to me and needs a new roof for their RV it is a no-brainer to go with EPDM coatings. I can not thank you guys enough.

    • Mr.Michael L.

      Hi, Greg, I just wanted to tell you that you sell the best RV roofing product that I have come across in my 60 years. I also would like to tell you that this beautiful spirited lady represented your company with such positive attitude and pleasant voice made my day. She replied to both of my phone calls very fast and answered all my questions. She along with your companies “Liquid Roof” product just make me want to tell all my RV friends (and I plan on telling everyone). Adrian… Read more

    • Glenn L. A

      I ordered the RV Liquid Roof to cover the roof on my 28-foot Class C motorhome. I was not the first owner, the previous owner had done some repairs to the roof but the old sealant used was failing and the roof was starting to leak. I took advantage of a nicer day this winter and cleaned and coated the roof. Applying it was really easy, I would pour some on the roof, then use a roller to move the coating by building a “wave” ahead of the roller to… Read more

    • R. Patel

      Our roof if now complete. As you know this was a two year project. We have a 25,000 ft roof with numerous other coatings on it. 25% built up with at least 4 coats of elastomeric and 25% metal with a Dicor product that we kept reapplying and the other 50% original metal. We tackled the first two parts using your proflex primer and then the liquid epdm rubber. After two years it passed with flying colors we did the job ourselves so I am sure it took longer than… Read more

    • Jesse

      My initial feedback is that the stuff is excellent. A real money saver for me as the leaking roof on my 1985 Coachman was making the RV nearly unusable. It did thicken a bit faster than I thought, and it hasn’t rained on the roof yet, so my glowing review is only preliminary. So, at this point your product is batting a thousand. My motorhome is 23′ long and +/- 10′ wide, but one gallon nearly covered the entire roof, which was leaking like a head wound. I’ll take a… 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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