Expansion Joints--Terms and Terminology:
Compression set is the
permanent loss of the ability to self-expand that results after a material
is subject to normal compression cycles. Compression set is made worse by
simultaneous exposure of certain materials to heat.
foam is used as the backing for precompressed sealants because it features very
low compression set.
Closed-cell foams suffer on average 25% permanent compression set
under movement and temperature cycles typical in construction applications.
NOTE: The definitions of terms and terminology herein are rooted in the
context of use in the field of construction-related joint sealing in
EMSEAL's experience. They are provided with the intent of offering a
fuller understanding of the context of their usage. Any suggestions or
questions regarding interpretation are welcome and should be directed to
email@example.com. Thank you.
Expansion joints and
sealants by EMSEAL
1-800-526-8365 -- 508-836-0280 --
-- Fax: 508-836-0281
EMSEAL JOINT SYSTEMS LTD. 25 Bridle Lane, Westborough, MA 01581 EMSEAL LLC. 120 Carrier Drive, Toronto, ON M9W 5R1