New announcement. Learn more

Waterproofing Construction Joints

Krystol Waterstop System - Waterproofing Construction Joints in Concrete

Krystol Waterstop System

The Krystol Waterstop System is used to waterproof construction joints in concrete. It consists of Krystol Waterstop Treatment and Krytonite.

Krystol Waterstop Treatment is a cementitious crystalline slurry that is applied to horizontal and vertical construction joints to provide additional waterproofing protection, and protect rebar from corrosion.

Krystol Waterstop Treatment is used in conjunction with Krytonite, as part of the Krystol Waterstop System, wherever water penetration through static concrete-to-concrete joints is a concern. Krystol Waterstop Treatment can also be used by itself as a damp-proofing treatment.

Krytonite Swelling Waterstop is a synthetic rubber waterstop that has superior swelling pressure and performance that stops water better than bentonite and competing swelling waterstops. It is suitable for use with regular ground water as well as salt and sulfate contaminated water. Krytonite is extremely durable and will not deteriorate over time. It can be used by itself as a single protection waterstop, or with Krystol Waterstop Treatment as a double protection option for construction joints.

Features & Benefits

Krystol Waterstop Treatment

  • Easy to install

  • Provides a permanent waterstop treatment as part of the Krystol Waterstop System

  • Durable; resistant to rain and foot traffic once hardened

  • Safe for contact with potable water; certified to NSF/ANSI Standard 61

  • Easy to inspect; distinctive yellow color increases reliability and quality control


  • Flexible and easy to install using Krytonite Adhesive

  • Resistant to high hydrostatic pressure

  • Extremely durable – will not deteriorate even with repeated wetting and drying cycles

  • Innovative trapezoid shape resists dislodgement and allows better concrete consolidation

  • Controlled swelling allows for concrete strength development in advance of swelling pressure

  • High-performance swelling – even in contaminated water

How it Works

Krystol Waterstop Treatment contains Krystol technology. When applied to concrete, Krystol chemically reacts with water and un-hydrated cement particles to form insoluble needle-shaped crystals that fill capillary pores and micro-cracks in the concrete and block the pathways for water and waterborne contaminants. Any moisture introduced over the lifespan of the concrete will initiate crystallization, ensuring permanent waterproofing protection.

Krytonite Swelling Waterstop is adhered using Krytonite Adhesive at or near the center of the construction joint to the clean, dry, concrete surface. For added long-term protection of the outboard reinforcing steel, Krystol Waterstop Treatment is applied to the concrete surface first, then Krytonite is adhered to the treatment.

Once new concrete is poured, the two products create a water-tight sealed joint.

Application Areas

The Krystol Waterstop System, comprised of Krystol Waterstop Treatment and Krytonite, is primarily used to waterproof new construction joints in concrete. Use Kryton’s joint waterproofing system to waterproof and protect:

  • Static concrete-to-concrete joints where there is any concern regarding water penetration

  • Preplanned and unintended shotcrete cold joints

Also use Krystol Waterstop Treatment on any areas where concrete-to-concrete pours are to be made as a damp-proofing treatment and to protect reinforcing steel.

Krystol Waterstop System for Concrete
Technical Data

Click on a picture below to download the appropriate document