Sika Sika Greenstreak Flexible PVC Waterstop Dumbbell 746

The Sika Greenstreak 746 Dumbbell PVC Waterstop is a high-performance concrete joint sealing solution engineered to stop water infiltration at the source. Measuring 6 inches wide and 3/16 inches thick, this dumbbell profile waterstop is specifically designed for non-moving construction joints found in retaining walls, tunnels, underground reservoirs, foundation slabs, and below-grade structures where reliable, long-term waterproofing is critical.

Manufactured from premium virgin PVC, the Greenstreak 746 delivers an industry-leading combination of flexibility, tensile strength, and chemical resistance — holding up against waterborne contaminants and harsh environmental conditions over the full service life of the structure. Its dumbbell cross-section geometry creates a secure, embedded barrier within construction and expansion joints, effectively blocking the passage of water and other liquids through the joint plane.

Compliance with the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74 confirms this product meets rigorous federal performance benchmarks, making it a trusted specification choice for civil engineers, contractors, and project owners working on water treatment facilities, municipal infrastructure, and industrial containment projects. Whether you’re waterproofing a new foundation or sealing joints in a large-scale water containment structure, the Sika Greenstreak 746 provides the dependable, code-compliant performance your project demands.

Key Features

The Sika Greenstreak 746 is built around a dumbbell profile geometry — the preferred cross-sectional shape for non-moving concrete joints. This design creates a secure mechanical bond within the surrounding concrete, forming a reliable watertight barrier that resists hydrostatic pressure and prevents liquid migration through the joint over the long term.

Durability is a core strength of this product. Manufactured from flexible virgin PVC, the 746 offers excellent resistance to waterborne chemicals, UV exposure, and temperature extremes, making it well-suited for both interior and exterior applications across a wide range of environments. Its material properties remain stable under demanding conditions, ensuring consistent waterproofing performance throughout the life of the structure.

The 746 carries NSF/ANSI Standard 61 certification, confirming its suitability for direct contact with potable water. Combined with compliance to the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74, it meets the certification and specification requirements commonly demanded on municipal, federal, and industrial water infrastructure projects.

In terms of application versatility, the Greenstreak 746 is a go-to solution for foundation walls, retaining walls, slabs-on-grade, tunnels, and containment structures — anywhere a dependable non-moving joint seal is required. Installation is straightforward, using standard heat welding techniques to create continuous, fully integrated transitions and splices, reducing the risk of field installation errors and ensuring an uninterrupted watertight diaphragm throughout the joint system.

Technical Specifications

Frequently Asked Questions

What applications is the Sika Greenstreak 746 PVC Waterstop used for? The Greenstreak 746 is widely specified for concrete joint waterproofing in retaining walls, tunnels, bridge abutments, water treatment plants, wastewater facilities, underground foundations, and below-grade containment structures. Any application requiring a dependable, long-term watertight seal at a non-moving construction joint is a strong candidate for this product.

How is the Sika Greenstreak 746 installed? The waterstop is embedded directly into the concrete joint prior to the concrete pour, allowing the material to become fully encapsulated within the structure. Split formwork is typically used to position half of the waterstop in the first concrete placement, with the remaining half projecting into the second pour. The centerline of the waterstop should be carefully aligned with the center of the joint for optimal sealing performance. Heat welding is the approved method for splicing and creating transitions, and factory-fabricated fittings are strongly recommended for intersections and directional changes to minimize the risk of field installation errors.

What size is the Greenstreak 746 waterstop? The 746 measures 6 inches in width and 3/16 inches in thickness and is supplied in a convenient 100-foot roll, making it suitable for both large-scale infrastructure projects and smaller concrete joint applications.

Is the Greenstreak 746 resistant to chemicals? Yes. The flexible virgin PVC compound used in the Greenstreak 746 provides strong resistance to a broad range of waterborne chemicals, making it a reliable choice for industrial, municipal, and environmental applications where exposure to aggressive fluids is a concern.

Is the Greenstreak 746 safe for use in potable water structures? Yes. The Greenstreak 746 is NSF/ANSI Standard 61 certified, meaning it has been independently tested and approved for direct contact with drinking water. This makes it an approved specification option for water treatment plants, reservoirs, and municipal water infrastructure projects.

What is a dumbbell profile waterstop and when should it be used? A dumbbell profile waterstop features enlarged end flanges connected by a flat or slightly ribbed web, creating a shape that anchors effectively within the concrete on both sides of the joint. Dumbbell profiles are best suited for non-moving joints — joints where steel reinforcement runs continuously through the joint and little to no movement is expected. For joints that require accommodation of lateral, transverse, or shear movement, a ribbed centerbulb profile would be the more appropriate choice.

Does the Greenstreak 746 meet federal specification requirements? Yes. The Greenstreak 746 complies with the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74, one of the most widely referenced federal standards for PVC waterstop performance. This compliance makes it a viable and commonly accepted product on government, municipal, and federally funded construction projects.

Can PVC waterstop be field welded on the job site? Yes. PVC waterstop can be heat welded in the field using a compatible splicing iron to create continuous seams, transitions, and intersections. However, factory-fabricated fittings are strongly recommended wherever possible, as field welds are a common source of waterstop system failures when not performed correctly. Sika offers a Waterstop Welding Certification Program to help contractors ensure proper installation technique.