A watertight expansion joint, the DSM System is for horizontal-plane deck applications. Traffic durable, joint-face adhered and pre-compressed, DSM System is a primary seal for deck expansion joints. DSM’s toughness and resilience come from its microsphere-modified-acrylic impregnation and tensionless highway-grade silicone bellows coating.

The system is comprised of 1) pre-compressed, silicone-and-impregnated-foam hybrid; 2) field-applied epoxy adhesive on the joint faces; 3) a silicone sealant band that seals substrate voids and irregularities.

An unmatched performance record has established DSM System as a standard for parking deck and stadium expansion joint sealing. Unlike extruded rubber seals, ‘caulk-and-backer rod’ and other predecessor technologies, DSM does not suffer from compression-set nor does it rely on adhesion in tension for its performance. Highly configurable, the DSM System uniquely handles changes in plane and direction essential to ensuring continuity of seal.

Features and benefits:

Watertight
100% (+/-50%) joint movement capability
UV resistant
Non-invasive anchoring
ADA Compliant
Low-temperature flexible, high-temperature stable
Tensionless bond-line and low stress silicone bellows
Traffic durable
Rapid installation–new or retrofit
Staged installation preserves traffic flow
Joint-face adhered
Non-staining
Conforms to joint edge irregularities
Size switching accommodates joint gap variations.

LEED Rating Emshield DSM