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Mixing the Catalyst with Liquid Rubber

EPDM Production When EPDM rubber is chemically resistance-cured, it resists polar solvents, alkalis and acids. The cure system includes a two-component peroxide heat resistance that becomes initiated at 302° F.

Physical Makeup

EPDM Liquid Rubber is very similar to traditional EPDM makeup. The most crucial qualities include:

  • A high resistance to water, ozone and ultraviolet stability, and overall fantastic anti-aging characteristics for many years.
  • A temperature tolerance that ranges from -62° to 300° F.
  • It is both alkali and acid resistant.
  • Holds up against ponding water even before it’s fully cured.

What is the Spread Rate?

The ideal thickness is 20 mil. of dry film, which can be spread to 42 square feet per gallon onto a smooth area. When assuming a 45 square foot gallon, the specs are: roof liquid mixing

  • 8 pounds per mixed gallon
  • 680 psi tensile
  • 62° F brittle point
  • 180-200% elongation

What is the Cure Rate?

The quickness of curing depends wholly on temperature and oxygen availability. Oxygen is required in order to activate the catalyst. Keep in mind that temperatures vary drastically in some regions, and it may take several weeks for a full cure to take place if EPDM Liquid Rubber is applied during a cool season. However, even in a non-cured state, it will withstand water and rainfall.

Pricing and Ordering
Technical Properties of EPDM
Polymer Properties
Specific Gravity 0.87
Shelf Life One Year
Pot Life 3-4 Hrs depending on temperature. High temps approx. 1-1.5 hrs
Color Available in White and Black
Vulcanizate Properties
Hardness, Durometer 30A to 90A
Tensile Strength, Mpa (psi) 6.9 to 20.7 (1000-3000)
Elongation, % 180-200% (depending on air temperature)
Compression Set B, % 20-60 *
Useful Temperature Range -60° to 300° F (-50° to 150° C)
Brittle Point -60° (-50°C) **
Volume Resistivity, ohm-cm 1016 to 1017
Dielectric Strength,v/mil 500-1000
Dielectric Constant 2.2 to 3.0
Tear Resistance Fair to good
Abrasion Resistance Good to excellent
Resilience Fair to good
Environmental Resistances
Ozone Excellent
Oxygen Excellent
Oils and Gasoline Poor
Water Excellent
Steam Excellent
Oxygenated Solvents Good to excellent
Halogenated Solvents Fair to poor
Phosphate Fluids Good to excellent
Alkali's Good to excellent
Acids, Dilute Excellent
Acids, Concentrated Good to excellent
Electrical Properties Excellent
Advantages Electrical Properties
Low Temperature Flexibility
Resistance to weathering, water, steam, heat cost
Limitations Hydrocarbon resistance
Temperature above 350° F (177°-C)
Flame resistance

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