The KW Series is a dedicated range of external-setting waterstops designed to provide a robust seal for concrete construction joints. By being positioned on the exterior face of the concrete structure, the KW Series prevents water from even reaching the joint core, making it an ideal choice for below-grade applications where groundwater pressure is a concern.
Constructed from high-grade PVC, these waterstops offer excellent resistance to chemical attack and environmental degradation, ensuring the long-term integrity of the waterproofing system in basements, tunnels, and water-retaining structures.
With a variety of widths ranging from 150mm to 500mm, the KW Series can accommodate various structural thicknesses and project requirements. Specialized models like the KWD-300x4 provide tailored solutions for specific construction details, ensuring a perfect fit and reliable performance.
This product page is designed to assist engineers, architects, and contractors in selecting the correct KW Series profile for their specific construction joint waterproofing needs.
Simplified section showing KW Series bridging an external construction joint at the concrete surface.
The KW Series provides a comprehensive range of profiles to suit different construction joint scenarios. The following table summarizes the key models available in the current catalog. Project teams should verify the specific requirements against the approved construction drawings.
| Model | Nominal Width (mm) | Typical Profile Height (mm) | Application Note |
|---|---|---|---|
| KW-500 | 500 | Variable | Extra-wide profile for large-scale structures and high-pressure environments. |
| KW-400 | 400 | Variable | Suitable for heavy-duty walls and underground slabs requiring a broad sealing area. |
| KW-330 | 330 | Variable | Ideal for standard industrial and commercial basement wall joints. |
| KW-250 | 250 | Variable | A versatile profile commonly used in residential and light commercial construction. |
| KW-150 | 150 | Variable | Compact profile for smaller wall sections or secondary joint details. |
| KWD-300x4 | 300 | 4 | Specialized profile with a 4mm height, designed for specific joint configurations. |
| All KW Series models are designed for external construction joints. For custom dimensions or specific technical data, please contact our technical support team. | |||
The KW Series is a critical component in the waterproofing strategy for structures where the external joint face is the primary line of defense against water ingress. Typical applications include:
While internal waterstops are placed within the concrete to stop water at the center of the joint, the KW Series stops water at the surface. This external approach is particularly effective in preventing moisture from ever entering the concrete section, thereby protecting the reinforcement from potential corrosion and reducing the risk of internal dampness.
The KW Series is designed to provide an external watertight seal for concrete construction joints, preventing water from seeping into the building's interior.
The choice depends on the joint width, expected water pressure, and structural thickness. Models range from the compact KW-150 to the heavy-duty KW-500.
Yes, the KW Series is highly suitable for water-retaining structures like tanks and reservoirs, provided they are installed on the water-facing side of the joint.
They are typically jointed using a specialized heater blade (hot melting knife) to weld the PVC ends together, ensuring a seamless and permanent connection.
DV Series PVC Waterstop is a dumbbell-profile internal construction joint waterstop used in reinforced concrete structures where a continuous watertight seal is needed across movement joints.
SV Series PVC Waterstop is an internal construction joint waterstop used in reinforced concrete structures where a continuous barrier is required across a non-moving construction joint.
SO Series PVC waterstop is an internal expansion joint waterstop for reinforced concrete structures where a continuous watertight barrier is required across movement joints. The center-bulb profile is embedded centrally within the concrete pour and flexes to accommodate expansion, contraction, and shear displacement along the joint line.
