

SINCE 1954, J P SPECIALTIES HAS BEEN A LEADER IN MANUFACTURING THE EARTH SHIELD® LINE OF WATERSTOPS, RENOWNED FOR THEIR SUPERIOR QUALITY AND PERFORMANCE. WE PROVIDE A WIDE ARRAY OF WATERSTOPS AND ACCESSORIES, ALL SUPPORTED BY EXCEPTIONAL TECHNICAL EXPERTISE AND CUSTOMER SERVICE.

Earth Shield® Waterstops for Chemical, Industrial, & Environmental Applications
Waterstop plays a critical role in the integrity of concrete structures. Waterstop provides a fluid-tight diaphragm when embedded in and running through concrete joints. Earth Shield® waterstops are used worldwide by major engineering firms and project owners for chemical containment, water and wastewater treatment, fuel resistance, and ozone contactor structures. J P Specialties also manufactures a complete line of high-quality waterstop installation tools and accessories. We invented the tools and technology to thermo-weld plastic (PVC, TPV, HDPE) waterstops (U.S. Patent Number 4,867,835).
Our technical team includes leaders who serve as officers on multiple ACI committees, demonstrating our commitment to excellence in engineering. We are proud to be the first waterstop manufacturer to achieve NSF 61 certification, setting the standard for quality and safety in the industry. Additionally, our owner, David Poole, authored The Little Book of Waterstop, the definitive guide widely used by professionals in the construction sector.
J P Specialties is dedicated to advancing industry knowledge through our popular AIA-accredited seminar. This seminar, available nationally, internationally, and online, provides one-hour CEU credits and has been attended by thousands of architects, engineers, contractors, and owners.
We are committed to supporting contractors with competitive pricing, extensive inventories, and customized factory fabrications for both standard and custom waterstop fittings. Our comprehensive training programs include on-site and online waterstop welding schools, where attendees are certified in proper waterstop welding techniques.

J P Specialties, Inc. Free Services Include:
- Complete plan takeoff and waterstop map.
- 3D isometric waterstop details (for every fitting in the print).
- Fast jobsite delivery.
- Exclusive waterstop site pickup and recycling services.
- Waterstop welding certification course for the contractor installing the Earth Shield® waterstop.
- Accredited online and in-office continuing education webinars and seminars for engineers and architects.

Earth Shield® waterstops are designed to meet strict performance requirements and regulations, which helps ensure critical structures remain fluid-tight and stable throughout their lifespan. By choosing the appropriate waterstop design and installation methods, engineers can effectively handle the challenges related to concrete joint sealing and contribute to the long-term success of their projects. Contact our technical engineering team for help with specifications and detailing.
Earth Shield® Waterstops for Chemical, Industrial, & Environmental Applications

Our technical team includes leaders who serve as officers on multiple ACI committees, demonstrating our commitment to excellence in engineering. We are proud to be the first waterstop manufacturer to achieve NSF 61 certification, setting the standard for quality and safety in the industry. Additionally, our owner, David Poole, authored The Little Book of Waterstop, the definitive guide widely used by professionals in the construction sector.
J P Specialties is dedicated to advancing industry knowledge through our popular AIA-accredited seminar. This seminar, available nationally, internationally, and online, provides one-hour CEU credits and has been attended by thousands of architects, engineers, contractors, and owners.
We are committed to supporting contractors with competitive pricing, extensive inventories, and customized factory fabrications for both standard and custom waterstop fittings. Our comprehensive training programs include on-site and online waterstop welding schools, where attendees are certified in proper waterstop welding techniques.
We don't just sell a product, we provide solutions.
Faith Moreno
Earth Shield® waterstops are designed to meet strict performance requirements and regulations, which helps ensure critical structures remain fluid-tight and stable throughout their lifespan. By choosing the appropriate waterstop design and installation methods, engineers can effectively handle the challenges related to concrete joint sealing and contribute to the long-term success of their projects. Contact our technical engineering team for help with specifications and detailing.
J P Specialties, Inc. Free Services Include:
- Complete plan takeoff and waterstop map.
- 3D isometric waterstop details (for every fitting in the print).
- Fast jobsite delivery.
- Exclusive waterstop site pickup and recycling services.
- Waterstop welding certification course for the contractor installing the Earth Shield® waterstop.
- Accredited online and in-office continuing education webinars and seminars for engineers and architects.

TPV Waterstop — Earth Shield® Thermoplastic Vulcanizate Waterstop (TPV) (aka TPE-R), by J P Specialties, dramatically expands the scope of conventional waterstop by offering unmatched chemical resistance to a broad spectrum of aggressive chemicals, solvents, and hot petroleum oils. Manufactured NSF 61-certified, EPA-compliant waterstop profiles are available for new construction and retrofit.

PVC Waterstop — Earth Shield® Polyvinyl Chloride Waterstop (PVC) is the perfect solution for most water and wastewater applications. Earth Shield® PVC Waterstop is manufactured from prime virgin resin and is the trusted choice for environmentally engineered concrete structures. CRD C572-74 compliant and NSF 61 certified waterstop profiles for new and retrofit applications.

SS Waterstop — Earth Shield® Stainless Steel Waterstop can stop even the most corrosive fluids in their tracks, even at severely elevated temperatures. A variety of metals, grades, and gauges are available. Earth Shield® utilizes 20 gauge 316 low carbon as our standard alloy, which offers broad-spectrum corrosion resistance to most aggressive media, and is virtually untouched by the deleterious effects of ozone, making it an ideal choice for ozone contactor structures used in modern water treatment plants.

MCR Waterstop — Type NB190® is a modern, hydrophilic chloroprene rubber waterstop with unmatched durability and water sealing capabilities. Manufactured NON-BENTONITE, modified chloroprene rubber, Type NB190® more than doubles its original size (400% in 36 days) when exposed to water. This expansion creates an effective compression seal within joints of limited to no movement. Type NB190® can expand and reexpand unlimited times with virtually no loss of physical properties. Additionally, Type NB190® has excellent resistance to many chemicals, is heat-resistant, and is NSF 61-certified safe for drinking water.