Some Technical Information on Liquid Roof and Liquid Rubber

Weatherometer – 2,000 hours (ASTM D4459-8-03)
Pot Life - 9;4 to 10 hours depending on temperature.
Cure Rate - 18to 24 hours to touch, 48 to 54 hours to walk on, and three to seven days for full cure.
Liquid Roof and Liquid Rubber need temperatures above 55 degrees to cure. The temperatures can fall below 55, but the product will not begin curing again until the temperatures rise above 55 degrees.

Mixing Liquid Roof with the Catalyst
Chemical Resistance - Cured EPDM rubber is resistant to acids, alkalis and polar solvents. Cure System - Two-component Peroxide initiated Heat Resistance 302 degrees Fahrenheit (150 degrees Celsius).

Physical Properties

The physical properties of EPDM Liquid Rubber(R) are typical of its EPDM chemistry. The outstanding characteristics include:

Extreme high resistance to penetration of water, ultraviolet and ozone stability, excellent long-term aging properties.

Very broad temperature-tolerance range (from minus 62 to 300 F). Acid and alkali resistant.

Withstands ponding water even when not cured.

Spreading Rate A 20-mil dry film will result when liquid is applied at the rate of 42 square feet per gallon to a smooth surface.

A rate of 45 square feet per gallon allows for average roughness.
Weight/gallon 8 pounds (mixed)
Tensile 680 psi
Elongation 180-200%
Brittle Point minus 62 F

Cure Mechanism - This rate is determined by temperature and the availability of oxygen. Oxygen is necessary to activate the catalyst, which promotes peroxide decomposition at lower temperatures. The cure mechanism in EPDM Liquid Rubber will vary from active to inactive, depending on temperature. Broad day-to-night temperature swings in spring and fall will not compromise the final physical properties of the EPDM Liquid Rubber membrane.

Technical Properties of EPDM

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