Some Technical Information on Liquid Roof and Liquid Rubber(R)

Epdm Liquid Roof

Weatherometer-2000 hours (ASTM D4459-8-03)
Pot Life-9;4-10 hours depending on temperature.
Cure Rate-(18-24) hours to touch;48-54 hours to walk on and 3-7 days full cure.

Liquid Roof and Liquid Rubber need temperatures above 55 degrees to cure. The temps can go below 55 but the product will not begin curing again until the temp's go above 55 degrees.

Chemical Resistance-Cured EPDM rubber is resistant to acids, alkalis and polar solvents Cure system-Two-component Peroxide initiated Heat Resistance 302 degrees F (150 degrees C)

Mixing Liquid Roof With The Catalyst

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(R) will vary from active to inactive determined by temperature. Broad day-night temperature swings in spring and fall will not compromise the final physical properties of the Liquid Rubber(R) membrane.

Physical Properties

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

Extreme high resistance to penetration of water. Ultra Violet and Ozone stable. Excellent long term aging properties.

Very broad temperature tolerance range (from 300 degrees F to minus 62 degrees 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 sq. ft per gallon on a smooth surface.

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

Technical Properties of EPDM

Polymer Properties
Specific Gravity	0.87
Color	Available white or black
Vulcanizate Properties
Hardness, Durometer	30A to 90A
Tensile Strength, Mpa (psi)	6.9 to 20.7 (1000-3000)
Elongation, %	100-600
Compression Set B, %	20-60 *
Useful Temperature Range	-50 to 150ÂºC (-60 to 300ÂºF)
Brittle Point	-50ÂºC (-60ÂºF) **
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
Adhesion to Metal	Fair
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
Features
Advantages	Electrical Properties Low Temperature Flexibility Resistance to Weathering, Water,Steam,Heat Cost
Limitations	Hydrocarbon resistance Temperature above 177ÂºC (350ÂºF) Flame Resistance