Keycup® is a multi-function, reusable concrete accessory that securely holds waterstop in place while simultaneously creating a keyed construction joint. Typical applications include:
Waterstop has a singular purpose: To prevent the passage of fluids across and along concrete joints. This page is dedicated to all things waterstop, as used to seal joints in concrete construction. Feel free to post any comments or questions and I will answer promptly.
Wednesday, August 13, 2025
Friday, May 16, 2025
JP Specialties, Inc. is a leading manufacturer of high-performance waterstop and concrete joint sealing solutions, serving the construction industry since 1954. Headquartered in Murrieta, California, we are renowned for our Earth Shield® line of chemical-resistant waterstops, which are trusted worldwide in critical applications such as water and wastewater treatment plants, chemical containment structures, fuel storage facilities, and ozone contactor systems.
Our Products
We offer a comprehensive range of waterstop products designed to ensure fluid-tight concrete joints:
- TPV (Thermoplastic Vulcanizate) Waterstops: Provide superior chemical resistance and flexibility, suitable for aggressive environments.
- PVC (Polyvinyl Chloride) Waterstops: Cost-effective solutions for general-purpose applications.
- Stainless Steel and Carbon Steel Waterstops: Ideal for high-temperature and corrosive environments.
- Hydrophilic and Mastic Waterstops: Designed for non-moving joints, these swell upon contact with water to ensure a tight seal.
- Specialty Fittings and Installation Tools: Including patented waterstop welding equipment (U.S. Patent No. 4,867,835).
Technical Leadership
Our commitment to engineering excellence is demonstrated by our active participation in multiple American Concrete Institute (ACI) committees. We were the first waterstop manufacturer to achieve NSF/ANSI 61 certification, ensuring our products are safe for potable water applications. Our founder, David Poole, authored The Little Book of Waterstop, a widely recognized industry guide.
Contractor Support and Free Services
We provide extensive support to contractors and project teams, including:
- Complete plan takeoffs and waterstop mapping.
- 3D isometric waterstop details for every fitting.
- Fast jobsite delivery.
- Exclusive waterstop site pickup and recycling services.
- Waterstop welding certification courses for installers.
- Accredited continuing education webinars and seminars for engineers and architects.
Sustainability Commitment
We are dedicated to environmental responsibility, operating paperlessly, sourcing raw materials responsibly, and recycling water during extrusion processes. Our take-back program ensures Earth Shield® products are properly recycled, minimizing our ecological footprint .
For more information, visit our website at www.jpspecialties.com or contact us at 800-821-3859 or 951-763-7077.
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