JP Specialties, Inc. / Earth Shield Waterstop

JP Specialties, Inc. / Earth Shield Waterstop In business continuously since 1954, J P Specialties has been manufacturing the Earth Shield® line of waterstops for over 20 years.

Earth Shield® waterstops, by J P Specialties, Inc., are used worldwide by major engineering firms and project owners for chemical containment, water and wastewater treatment, fuel resistance, and ozone contactor structures. We provide technical support for a complete range of waterstops and waterstop accessories. Our waterstop products (PVC, TPV, stainless steel, and strip-applied) have the best p

hysical properties in the industry, and more importantly, we provide unmatched service and technical support. At the engineering level, our technical leaders are officers in multiple ACI committees. We were the first waterstop company to get NSF 61 certification. Our owner has written the leading professional resource book used in the construction industry (The Little Book of Waterstop by David Poole). Our popular accredited seminar (worth one-hour CEU credit) is presented nationally, internationally, and on-line to over 200 engineering and owner offices with many thousands of attendees. We also provide contractors with aggressive pricing, extensive inventories, and factory fabrications for both standard and custom waterstop fittings. J P Specialties also provides on-site and on-line waterstop welding schools and certifies attendees for the proper welding of waterstops.

Our newest Tech Tip for waterstop specifiers is online at https://jpspecialties.com/techtips037.pdf
02/15/2026

Our newest Tech Tip for waterstop specifiers is online athttps://jpspecialties.com/techtips037.pdf

J P Specialties brings deep, field-tested technical expertise to waterstop systems, allowing contractors to confidently ...
01/31/2026

J P Specialties brings deep, field-tested technical expertise to waterstop systems, allowing contractors to confidently address installation challenges when conditions don’t go as planned. With decades of hands-on experience across a wide range of project types, our team understands not only how waterstops are designed to perform, but how they behave in real-world jobsite conditions. When unexpected issues arise—whether related to alignment, embedment, splicing, concrete placement, or site constraints—J P Specialties provides practical, constructible solutions that keep the project moving forward without compromising performance.

More than a material supplier, J P Specialties serves as a technical resource for contractors, offering troubleshooting support before, during, and after installation. Our ability to quickly diagnose problems, recommend corrective actions, and adapt details to field realities helps reduce delays, rework, and risk. By combining product knowledge with real installation experience, J P Specialties helps ensure waterstop systems perform as intended—even when the field throws a curveball.

Come see us at the 2026 World of Concrete in Las Vegas, NV (Jan. 20th through 22nd). We're in booth S-13310.
01/05/2026

Come see us at the 2026 World of Concrete in Las Vegas, NV (Jan. 20th through 22nd). We're in booth S-13310.

Merry Christmas!
12/23/2025

Merry Christmas!

12/11/2025

Concrete structures are designed for durability, strength, and low permeability—but their weakest points are almost always the joints. Whether planned (construction, expansion, and contraction joints) or unplanned (cracks), joints present preferential pathways for water migration.

Waterstop plays a critical role in the integrity of concrete structures. Waterstop provides a fluid-tight diaphragm when...
11/16/2025

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).

As leaders in concrete construction products, we build for longevity — not landfill. Our core mission is delivering solu...
10/26/2025

As leaders in concrete construction products, we build for longevity — not landfill. Our core mission is delivering solutions that stand the test of time, and that purpose extends beyond what we manufacture. It’s about how we operate every single day.

That’s why J P Specialties, Inc. is committed to becoming virtually paper-free by 2030. By transitioning to digital documentation, streamlined communication, and cloud-based processes, we greatly reduce our reliance on paper and the resources required to produce, transport, and store it.

Digitization means less deforestation, fewer emissions from freight and waste management, and a smaller operational footprint — all while speeding up service, improving accuracy, and supporting the next generation of sustainable business practices.

We’re constructing a future where high-performance products and environmental responsibility go hand-in-hand.

Stronger structures. Greener operations. Better world.

J P Specialties manufactures a line of specialized tools and equipment for welding, installing, and protecting thermopla...
09/20/2025

J P Specialties manufactures a line of specialized tools and equipment for welding, installing, and protecting thermoplastic and metallic waterstops (and other extrusion‐profile products like expansion joints). Our tools meet field and industrial performance demands, ensuring weld quality, alignment, safety, and durability.

Waterstop Splicing Irons (Series 2)
For welding thermoplastic waterstops and extruded profiles (PVC, TPV, HDPE, TPER, etc.).
• Adjustable temperature from 250°F to 500°F to handle different materials and ambient conditions.
• Built-in analog thermometer (on many models).
• Aircraft-grade 6061 aluminum body; sealed end caps; ergonomic & durable build.
• 1,000 watts for rapid heat-up; lightweight design but strong.
• “Off” setting; UL & CSA certified outdoor-use cord.
• Meets U.S. Army Corps of Engineers specification CEGS-03250.

ST-10® Series 2 Waterstop Splicing Table
Patented for producing high tensile strength field welds. Aims to reduce labor (can allow one person to handle what’s often a two-person job). Designed for multiple waterstop widths (4”, 6”, 9”, 12”).

Fastening & Installation Tools
For securing waterstops, protecting them during construction, and ensuring proper joint form.
• Hog Rings & Pliers: for tying waterstop to reinforcing steel.
• Waterstop Protector: heavy-duty steel guard to protect embedded waterstops during construction.
• Stainless Steel Welding Jig: designed for straight-length alignment of stainless steel waterstop profiles; includes copper cool bar.

Accessories
• Peel & Stick Teflon® Covers: factory cut to fit individual iron models; allows protective, non-stick cover to be applied without trimming.
• Factory-Installed Eyelets: to help secure the waterstop 12” on center, eliminating the need for hog rings.
• Keycup®: Reusable plastic keyway/waterstop forming and alignment tool.

Award-Winning, Reusable Solution for Waterstop and Keyed Construction JointsJ P Specialties, Inc., the industry leader b...
08/16/2025

Award-Winning, Reusable Solution for Waterstop and Keyed Construction Joints

J P Specialties, Inc., the industry leader behind Earth Shield® waterstops, proudly announces Keycup®, a groundbreaking, multi-functional concrete accessory engineered to simplify and enhance construction joint formation. Keycup® was recently named “Most Innovative Concrete Accessory” at the 2024 World of Concrete in Las Vegas, NV, underscoring its industry-changing impact.

Key Features of Keycup®:
Dual-Function Design: Keycup® simultaneously secures waterstop and forms a clean, keyed joint—ideal for slab-on-grade, wall joints, lumber replacement, and labor-saving applications.
Universal Fit: Compatible with most flat-strip and centerbulb waterstops, accommodating widths from 4” to 9”.

Easy Installation in Four Steps:
1. Place the waterstop into the Keycup® former, backed by wood forming.
2. Pour the first concrete lift.
3. Strip the formwork and remove the former.
4. Pour the subsequent concrete section.

Field-Friendly for Directional Changes: May be miter-cut at 45° to form seamless 90° corners or multi-way junctions—without requiring custom fittings.
Cost and Time Efficient: Compared to traditional wood forming, Keycup® saves approximately $2.50 per foot on initial installation and up to $50 per 10-ft section on reuse.

Backed by Decades of Expertise
With over 70 years of experience, J P Specialties, Inc. continues to lead the waterstop industry, offering Earth Shield® products in PVC, TPV, stainless steel, and hydrophilic options, all supported by unmatched technical assistance. Their leadership extends to technical committees in ACI, NSF 61 certification, and continuing education programs.

Availability & Support
Keycup® is now in stock and ready to ship through J P Specialties’ certified distribution network. The company offers full contractor support, including installation assistance and technical guidance.

About J P Specialties, Inc.
Since 1954, J P Specialties, Inc. has manufactured the Earth Shield® waterstop line, offering innovative fluid containment solutions for the most demanding concrete structures. With certifications, expert seminars, and customer-focused service, the firm continues to support the construction industry with best-in-class products and education.

I found this today, going through some old letters. This is circa 1990!
07/13/2025

I found this today, going through some old letters. This is circa 1990!

Address

25811 Jefferson Avenue
Murrieta, CA
92562

Opening Hours

Monday 7am - 3:30pm
Tuesday 7am - 3:30pm
Wednesday 7am - 3:30pm
Thursday 7am - 3:30pm
Friday 7am - 3:30pm

Website

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