Adeka P-201 — A Real Waterstop Problem Solver

• Urethane rubber – hydrophilic agent urethane polymer
• Good chemical resistance and durability  pH range 3~11
• Easy to use ONE part hydrophilic urethane (cartridge or pail)
• Easy to apply
• Temperature / humidity cure
• Excellent adhesive strength
• Excellent Durability
• Expansion approximately 2Xs by volume

Adeka P-201 is a single component, hydrophilic, modified urethane waterstop that comes in a 10.8 ounce cartridge. P-201 is used as a waterstop in new construction and in repair applications. It can be placed on damp or uneven surfaces and functions in a wide range of temperatures and ground water conditions.

P-201 will expand up to 2 times (100%) by volume in the presence of water. It will expand in the direction of least resistance. When expansion is inhibited, the product will produce expansion pressure against the resisting substance. This expansion pressure will effectively seal off water penetration. The amount of concrete coverage required depends on bead size. The coverage may range from 2” (1⁄4” bead) to 4” inside a double mat of rebar (1⁄2” bead). Bead size also determines hydrostatic head resistance.

Adeka P-201 cartridge

J P Specialties, Inc. is proud to stock and sell P-201 waterstop sealant.

Unique Waterstop System Utilized In Idaho Dam Rehab

In early summer season, the reservoir behind Dworshak is about 630 feet deep. At the bottom of the reservoir the water pressure is high. From the top to the bottom of the dam are large, solid, copper “waterstops” between the large concrete monoliths designed to prevent leaks between the monoliths and in the cracks. Since 2009, the District and a contracted architectural-engineering (A-E) firm have been studying and prototyping new urethane waterstop technologies for tall or “high-head” dams. This $1.3 million American Recovery and Reinvestment Act (ARRA) technology demonstration will lead to groundbreaking engineering research data for future high-head waterstop repairs at Dworshak and around the world. The urethane waterstop cylinders are being manufactured off site, and installation is expected to begin in late September 2010.