Sika Sika Greenstreak Flexible PVC Waterstop Ribbed Centerbulb 735

The Sika Greenstreak 735 is a premium-grade, flexible PVC waterstop engineered for concrete joints where long-term watertightness is non-negotiable. Its ribbed centerbulb profile is specifically designed to accommodate lateral, transverse, and shear joint movement — delivering a secure, continuous seal even in structures subject to settlement, thermal expansion, or live load deflection.

Built for the most demanding waterproofing applications in civil and industrial construction, the 735 profile performs reliably in water and wastewater treatment plants, tunnels, culverts, below-grade foundations, retaining walls, and any structure exposed to continuous or intermittent hydrostatic pressure. The 9-inch width and 3/8-inch thickness provide added material mass and sealing surface, making this profile well-suited for high-pressure environments where a standard-width waterstop may fall short.

Manufactured from durable, prime virgin PVC, the Greenstreak 735 is built to resist waterborne chemicals, environmental degradation, and long-term wear without compromising flexibility or joint performance. Every roll meets NSF/ANSI Standard 61 for safe use in potable water contact applications, as well as the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74 — two of the most recognized benchmarks for waterstop quality and compliance in the industry. For contractors and engineers who require a proven, specification-grade PVC waterstop in a wide-profile format, the Greenstreak 735 delivers the performance and reliability the job demands.

Key Features

The Sika Greenstreak 735 is constructed from flexible, virgin PVC — a material chosen for its natural elasticity, chemical resistance, and proven long-term durability in wet and aggressive environments. The ribbed centerbulb profile at the center of the waterstop is the defining feature of this design, providing the geometry needed to absorb lateral, transverse, and shear movement at the joint without compromising the watertight seal. This makes the 735 suitable for both moving and non-moving concrete joints, offering broad versatility across a wide range of project types.

Installation flexibility is another key advantage of the 735 profile. The PVC material is fully heat weldable, allowing contractors to create seamless transitions, custom fabrications, and intersections in the field or through factory prefabrication. A continuous, uninterrupted seal is critical to waterstop performance, and the heat weld process ensures that splices and directional changes maintain the same watertight integrity as the straight runs.

From a compliance and safety standpoint, the Greenstreak 735 meets NSF/ANSI Standard 61, certifying it as safe for potable water contact — an essential requirement for drinking water infrastructure and water treatment construction. It also meets the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74, confirming that the material properties hold up to federally recognized performance standards. The PVC compound itself is corrosion-resistant and non-toxic, will not discolor surrounding concrete, and will not produce electrolytic reactions with embedded steel reinforcement.

Technical Specifications

Frequently Asked Questions

Can the Sika Greenstreak 735 be used in potable water applications? Yes. The Greenstreak 735 meets NSF/ANSI Standard 61, certifying it as safe for direct potable water contact. This makes it a compliant choice for drinking water treatment facilities, reservoirs, aqueducts, and other infrastructure where water safety standards must be met.

How is the Greenstreak 735 waterstop installed? The 735 must be embedded in concrete prior to placement, with the centerline of the waterstop aligned with the center of the joint. Split formwork is typically required to allow half of the waterstop to be positioned within the first concrete pour, with the remaining half projecting into the second pour. All transitions, directional changes, and splices must be heat welded using a PVC waterstop splicing iron to maintain a continuous, watertight seal throughout the joint system. Factory-fabricated fittings are strongly recommended for intersections and complex transitions to reduce the risk of field weld failures.

What size is the Greenstreak 735 and how is it packaged? The 735 profile measures 9 inches in width and 3/8 inch in thickness, and is supplied in a 50-foot roll. The wider profile provides increased sealing surface and material mass, making it well-suited for joints subject to higher hydrostatic head pressure.

Is the 735 suitable for both moving and non-moving joints? Yes. The ribbed centerbulb geometry accommodates lateral, transverse, and shear movement, making the 735 appropriate for movement joints such as expansion and contraction joints. It can also be used effectively in non-moving construction joints where long-term watertight performance is required.

What specifications does the Greenstreak 735 meet? The 735 meets the physical property requirements of the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74, one of the most widely referenced federal standards for waterstop performance. It also carries NSF/ANSI Standard 61 certification for potable water applications. These certifications make it a specification-grade product suitable for public infrastructure, government projects, and engineer-specified construction.

Does the Greenstreak 735 require any ongoing maintenance? No routine maintenance is required once the waterstop is properly installed and encapsulated in concrete. Long-term performance is largely dependent on correct installation — proper positioning, adequate concrete consolidation around the profile, and fully welded transitions and splices. When installed to manufacturer guidelines, the 735 is designed to provide a service life equal to that of the surrounding concrete structure.

Can the 735 waterstop be used in chemical containment applications? Yes. The flexible PVC compound used in the Greenstreak 735 offers strong resistance to a broad range of waterborne chemicals, making it suitable for use in industrial containment structures, wastewater treatment facilities, and other environments where chemical exposure is a concern. For projects with specific or aggressive chemical containment requirements, it is recommended to verify compatibility with Sika’s technical team prior to specification.