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What is EPDM?

EPDM is an elastomeric compound that is manufactured from ethylene, propylene, and a small amount of diene monomer. These ingredients are synthesized to produce a product that exhibits a high degree of ozone, ultraviolet, weathering and abrasion resistance, and outstanding low temperature flexibility. These ingredients also contribute to resistance to acids, alkalis, and oxygenated solvents (i.e., ketones, esters, and alcohols).

How can the performance of EPDM be gauged over the last 40 years?

With over 1 billion square feet of membrane installed worldwide, EPDM has established itself as the membrane for all climatic conditions. This is supported by various laboratory studies and actual field installations. This excellent track record is the result of unique and unmatched physical characteristics:

 EPDM has superior resistance to UV (ultraviolet) radiation;

 EPDM has unmatched resistance to thermal shock;

 EPDM exhibits superior resistance to cyclic fatigue;

 EPDM has superior resistance to hail damage;

 EPDM will not become brittle and will not shatter due to low temperature flexibility.

Does EPDM require systematic maintenance or additional coatings or treatment to achieve its life expectancy?

No. No special coating or other surface treatment is required. General maintenance in the form of good housekeeping should periodically be performed to remove debris and leaves, and to investigate the performance of other components.

What is the expected longevity of EPDM Membrane?

With many EPDM installations exceeding 40 years of exposure in the field under various climatic conditions, none of the material tested has shown alarming signs of degradation. Even though it would be difficult to predict, studies have shown aged EPDM membrane as having a potential life expectancy of 50 years.

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