J P Specialties, we manufacture high-performance waterstop systems that deliver long-term durability, chemical resistance, and watertight integrity in demanding environments. 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).Since 1954, J P Specialties has been the global leader in manufacturing the Earth Shield® line of PVC and TPV waterstops, renowned for superior quality and performance. We provide a wide array of waterstop systems and related waterstop accessories for concrete joints, all supported by exceptional technical expertise and customer service. Our key markets include water and wastewater treatment plants, containment systems, tunnels, and infrastructure.Earth Shield® Thermoplastic Vulcanizate Waterstop (TPV [aka TPE-R]) 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.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 construction and retrofit applications.Earth Shield® 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. Type NB190® can expand and re-expand 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.Earth Shield® Stainless Steel Waterstop can stop even the most corrosive fluids in their tracks, even at severely elevated temperatures. We offer a variety of metals, grades, and gauges. Earth Shield® uses 20-gauge 316 low-carbon stainless steel as our standard alloy, offering broad-spectrum corrosion resistance to most aggressive media and is virtually unaffected by ozone, making it ideal for ozone contactor structures in modern water treatment plants.J P Specialties, Inc. is a trusted leader in manufacturing high-quality thermoplastic (PVC, TPV), rubber (MCR), and metallic (stainless steel) waterstops for fluid-proofing concrete joints. With decades of experience, we are committed to innovation, excellence, and strict industry standards. Our dedication to research, quality, and customer-focused service ensures reliable and durable products for critical projects. We are known for integrity and technical expertise. We prioritize transparency, long-term relationships, and environmental compliance. Whether for infrastructure, environmental protection, or commercial or industrial construction, J P Specialties delivers dependable solutions that you can trust.Choosing the Right Waterstop System for Your ProjectThe ribbed centerbulb waterstop is a highly versatile waterstop that accommodates lateral, transverse, and shear movement. It is used in expansion, construction, and control joints and offers excellent anchoring abilities and a long fluid-flow path due to the multiple ribs on the exterior flanges. Under stress, the numerous ribs on the waterstop distort less than a dumbbell-type waterstop because pressure is first applied to the innermost anchoring rib and then decreases to the subsequent ribs. This design allows joint movement beyond the material's ultimate elongation without distorting the anchoring ribs. Our ribbed centerbulb waterstops feature a large outer-diameter centerbulb. Combined with our elastomers' exceptional mechanical properties, they provide unsurpassed joint movement and sealing abilities.A flat strip waterstop is ideal for limited movement construction and contraction (control) joints. Similar to all our thermoplastic waterstops, Earth Shield® flat strip waterstop can be heat-welded with a standard waterstop splicing iron, allowing easy field fabrication and enabling the waterstop to function as a continuous, homogeneous, fluid-tight diaphragm.The retrofit waterstop creates a fluid-tight seal between existing and new concrete without labor-intensive, structurally destructive saw-cutting and grouting. It is ideal for building a new containment curb or wall next to or on an existing slab. We also offer unique profile fabrications for columns and pipe penetrations. We sell our retrofit waterstops as complete systems, including all necessary stainless steel bars and bolts. Additionally, we provide high-quality chemical-resistant novolac epoxy — VEN 250, VEN 500, or VEN 1000. Like all our thermoplastic waterstops, the Earth Shield® retrofit waterstop can be heat-welded with a standard waterstop splicing iron, allowing easy field fabrication and enabling the waterstop to function as a continuous, homogeneous, fluid-tight diaphragm.Integrated expansion board cap waterstop systems replace post-applied joint sealant and provide a fluid-tight internal seal like a traditional waterstop, all in one integrated unit. Install the Earth Shield® expansion board cap waterstop over conventional expansion board filler or Earth Shield’s chemical-resistant, plastic expansion board. The expansion board acts as the form; therefore, no form splitting is necessary, which significantly accelerates the project schedule and delivers a long-lasting, attractive finished concrete joint. Like all our thermoplastic vulcanizate waterstops, the Earth Shield® integrated cap system waterstop can be heat-welded with a standard waterstop splicing iron, allowing easy field fabrication. Our EB Cap waterstop functions as a continuous, homogeneous, fluid-tight diaphragm.Earth Shield® tear web waterstops are for large joint movements such as tank foundations. For construction and contraction (control) joints, install a ribbed centerbulb instead. Earth Shield® tear web waterstop can be heat-welded with a standard waterstop splicing iron, allowing easy field fabrication and enabling the waterstop to function as a continuous, homogeneous, fluid-tight diaphragm.