Willseal WJS Expansion Joint System
Willseal WJS is a high-performance expansion joint solution designed to deliver reliable waterproofing in demanding vehicular and structural environments. It combines an elastomeric rubber gland with Willcrete™, an impact-absorbing concrete nosing, to create a monolithic, continuous seal ideal for deck-to-deck and deck-to-wall applications. This system is especially well-suited for areas subject to vehicular traffic and environmental exposure.
Key Benefits
- Maximum Durability: Sealant resists UV, thermal cycling, chemicals, and shear movement.
- Enhanced Waterproofing: Monolithic seal blocks water intrusion and joint leakage.
- Low Profile: Specially designed to stay flush with concrete surfaces for reduced impact damage.
- Multi-Use Capability: Performs in seismic, thermal, vertical, and lateral conditions under vehicular loads.
- ADA Compliant: Low gap profile reduces trip hazards and debris accumulation.
Common Applications
- Parking garages
- Stadium decks
- Plaza decks
- Traffic-bearing expansion joints
Packaging & Binder Performance
This system includes a thermoplastic gland and Willcrete™ concrete nosing, tested per key ASTM standards. Glands are available in varied sizes to meet site-specific needs.
Product Properties
| Property | Value |
|---|---|
| ASTM D2240: Durometer Hardness | 78 ± 5 |
| ASTM D412: Tensile Strength | 4,750 psi |
| ASTM D412: Ultimate Elongation | 10% |
| ASTM D624: Tear Strength | 200 pli |
Looking for a traffic-rated waterproof solution? See our previous system: Willseal 250B. Learn more at Tremco.
