Sika Sika Greenstreak Flexible PVC Waterstop Ribbed Centerbulb 702

Sika Greenstreak 702 is a professional-grade flexible PVC waterstop solution engineered for reliable joint waterproofing in concrete construction. When embedded in concrete across and along the joint, the 702 profile forms a continuous watertight diaphragm that effectively blocks liquid migration and prevents water infiltration through the joint — making it a trusted choice for critical infrastructure and water containment projects.

The ribbed centerbulb design of the 702 profile makes it especially well-suited for movement joints, where the ability to accommodate lateral, transverse, and shear movement is essential. The centerbulb geometry flexes with the joint as expansion, contraction, thermal cycling, and structural settlement occur — maintaining a watertight seal without compromising performance. This makes the 702 one of the most versatile and widely specified waterstop profiles available for both new construction and rehabilitation projects.

Whether the application involves water and wastewater treatment facilities, below-grade foundations, retaining walls, tunnels, or containment structures, the Sika Greenstreak 702 delivers the sealing performance and long-term durability that engineers and contractors depend on.

Key Features

The Sika Greenstreak 702 is a flexible PVC waterstop designed to be fully embedded in concrete, where it forms a durable barrier against water migration through construction joints. Its ribbed centerbulb profile is specifically engineered to handle joint movement in multiple directions — including lateral, transverse, and shear — making it a reliable choice wherever dynamic joint performance is required.

Approved for potable water contact, the 702 meets NSF/ANSI Standard 61, ensuring it is safe for use in drinking water infrastructure, water treatment facilities, and similar applications. It also meets the full physical property requirements of the Army Corps of Engineers PVC Waterstop Specification CRD-C 572-74, confirming its suitability for demanding government and municipal projects.

From an installation standpoint, the 702 is heat weldable, allowing for seamless, continuous transitions and intersections throughout a structure’s joint system. This is critical for maintaining watertight integrity across complex joint configurations. As with all PVC waterstop materials, the 702 should be stored away from direct sunlight prior to installation to preserve material performance and dimensional stability.

Technical Specifications

Frequently Asked Questions

What is a ribbed centerbulb waterstop used for? Ribbed centerbulb waterstops are the go-to choice for movement joints in concrete construction. The centerbulb geometry is specifically designed to accommodate lateral, transverse, and shear movement that occurs due to thermal cycling, structural settlement, and load deflection. The ribbed flanges enhance the mechanical bond with surrounding concrete, improving overall sealing characteristics and long-term joint performance.

How is PVC waterstop joined at corners and intersections? All transitions, intersections, and splices must be heat welded to maintain a continuous, watertight diaphragm throughout the joint system. Factory-made fabrications are strongly recommended for intersections and changes of direction, as they significantly reduce the risk of field weld failures. When field welding is necessary, use a Sika Greenstreak PVC waterstop splicing iron and carefully follow the splicing instructions specific to the profile being installed.

When should the waterstop be installed? PVC waterstop must be installed prior to concrete placement to ensure proper positioning and full concrete consolidation around the profile. Correct placement at the joint centerline is critical — misalignment during the pour is one of the leading causes of waterstop system failure. Tying the waterstop flanges to adjacent reinforcing steel helps maintain position during concrete placement.

What size and profile is the Sika Greenstreak 702? The 702 features a 4-inch nominal width and 3/16-inch thickness with a ribbed centerbulb profile, supplied in a 50-foot roll. This makes it well suited for a wide range of standard construction joint applications where movement accommodation and watertight performance are both required.

Is the 702 suitable for potable water structures? Yes. The Sika Greenstreak 702 is certified for potable water contact and meets NSF/ANSI Standard 61, making it an approved choice for drinking water infrastructure, water treatment plants, reservoirs, and similar facilities where water quality and safety standards must be maintained.

What projects and applications is the 702 commonly used on? The 702 is widely specified for water and wastewater treatment plants, below-grade foundation walls, retaining walls, tunnels, culverts, reservoirs, bridge abutments, and concrete containment structures. Any application requiring a reliable, flexible waterstop at a movement joint is a strong candidate for the 702 profile.

How should PVC waterstop be stored on site? PVC waterstop should be protected from direct sunlight and stored in a manner that prevents deformation or kinking prior to installation. Rolled material should remain in its original packaging whenever possible and kept in a shaded, covered area. Improper storage can compromise the material’s dimensional stability and make proper installation more difficult.

Can the Sika Greenstreak 702 be used in below-grade applications? Yes. The 702 is well suited for below-grade construction where hydrostatic pressure resistance is a key concern. Its flexible PVC construction and ribbed centerbulb profile maintain watertight integrity even under sustained water pressure, making it a dependable solution for foundations, basement walls, and underground structures.