Cetco Waterstop-RX Expanding Concrete Joint Waterstop
The Cetco Waterstop-RX is a bentonite-based, expanding strip waterstop engineered to prevent water ingress through concrete construction joints. Designed for cast-in-place applications, it swells on contact with water to create a self-sealing barrier that protects against both continuous and intermittent hydrostatic pressure. Waterstop-RX is ideal for vertical and horizontal nonmoving joints, pipe penetrations, and irregular detailing in new-to-existing construction interfaces.
This waterstop is available in two configurations to meet different installation needs. Waterstop-RX 101 has a 1 in. x 3/4 in. rectangular profile and comes in 100 ft. rolls, ideal for general-purpose applications. Waterstop-RX 102 features a smaller 3/4 in. x 3/8 in. half-circle profile and comes in longer 200 ft. rolls, making it a flexible option for tighter spaces or more detailed applications.
Unlike traditional PVC or rubber dumbbell waterstops, Waterstop-RX requires no split-forming, seam welding, or special pieces. It simplifies installation, reduces labor, and integrates easily into any waterproofing design. Proven in real-world construction for over two decades, it enhances external waterproofing systems by targeting high-risk leak areas and reinforcing long-term durability.
Features
- Expands on contact with water to form a self-sealing barrier.
- Replaces PVC/rubber waterstops without seam welding or special forming.
- Two profile options: RX 101 (rectangular) and RX 102 (half-circle).
- Designed for vertical and horizontal nonmoving concrete joints.
- Compatible with cast-in-place concrete, precast, and shotcrete methods.
- Ideal for use around pipes, utility penetrations, piles, beams, and supports.
- Performs under continuous or intermittent hydrostatic pressure up to 60 meters.
- Flexible and lightweight for easy handling and installation.
- Installs using compatible adhesive or mechanical fastening.
- Active bentonite core absorbs up to 15x its volume in water.
- Reduces labor and material costs by eliminating transition pieces.
- Proven performance on global construction projects for 20+ years.
- Enhances any waterproofing system by sealing high-risk infiltration zones.
- Resistant to contaminants commonly found in groundwater.
Cetco Waterstop-RX Expanding Concrete Joint Waterstop Specifications
| Specification | Waterstop-RX 101 | Waterstop-RX 102 |
|---|---|---|
| Size | 1 in x 0.75 in (25 mm x 20 mm) | 0.75 in x 0.375 in (19 mm x 10 mm) |
| Roll Length | 16 ft 8 in (5 m) | 33 ft 4 in (10 m) |
| Cross-Section Shape | Rectangle | Half-Circle |
| Unit Quantity per Carton | 100 linear ft (30 m) | 200 linear ft (60 m) |
| Material Composition | Active bentonite-based expanding waterstop | |
| Application | Cast-in-place reinforced concrete joints, including vertical, horizontal, and structural penetrations | |
| Installation Method | Adhered to concrete surfaces using a compatible adhesive or mechanically fastened | |
| Hydrostatic Pressure Resistance | Tested to over 60 meters | |
| Sealing Mechanism | Expands upon contact with water to fill voids and seal joints | |
