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EPDM is not affected by low temperature extremes, even if exposed. It remains flexible and can be installed and seamed at below freezing temperatures (low temp resistance to -49° F/ 45° C).
EPDM is one of the puncture resistant materials available and exhibits elongation in excess of 500%. With careful placement, rounded rocks and boulders can be installed over EPDM liner but a geotextile cushion layer or layers should typically be laid between them and the liner.
does chemical resistance mean?
An EPDM liner will survive exposure to a large variety of chemicals, even though the chemical could have some effects on the liner, without causing the liner to fail. If you have a specific concern, give us a call at 800-524-8672.