Sika Greenstreak Swellstop 1in x 3/4in 100ft Carton 419271

$299.40

Swellstop is a water-swellable, waterproofing sealant designed for use on many types of poured in-place and below grade precast concrete applications.

Swells to seal any exposed gaps in concrete joints
Excellent adhesion to clean, dry concrete
Stays flexible in cold weather without shrinking or hardening

Availability: In stock ( 3 Available )

Primer Sold Separately! See Swellstop Primer 1 Gallon 513399

SKU

21182

Sika Greenstreak Swellstop – Water-Swellable Joint Sealant for Concrete Joints

Sika Greenstreak Swellstop is a high-performance, butyl polymer-based water-swellable sealant tape designed to create a watertight seal in non-moving concrete joints. Upon contact with water, Swellstop expands to fill gaps, ensuring superior protection against water infiltration in below-grade structures, foundation slabs, and precast concrete walls. Unlike traditional expansion joints, Swellstop is engineered for static applications and is easy to handle and install. It remains flexible in extreme temperatures and does not require special heating or equipment for application. This versatile joint sealant is ideal for underground waterproofing, septic tanks, utility vaults, and water containment structures.

Key Features:

Water-swellable butyl polymer sealant for watertight concrete joints
Expands upon contact with moisture to seal gaps
Designed for non-moving joints in below-grade applications
Excellent adhesion to clean, dry concrete surfaces
Remains flexible in extreme temperatures (-40°F to 215°F)
Does not shrink, harden, or require heating during installation
Ideal for use in foundation slabs, precast walls, septic tanks, and utility vaults
Simple application with no special equipment required

Technical Specifications:

Property	Value
Material	Butyl polymer-based sealant
Appearance / Color	Black
Shelf Life	2 years (stored in a cool, dry place)
Specific Gravity	1.60 ± 0.05 g/cm³ (ASTM D-297)
Weight per Gallon	13.3 lbs
Swelling Capacity	140-170% by weight (after 2 months water immersion)
Temperature Stability	-40°F to 215°F
Packaging	100 ft. per carton (6 rolls of 16'8" each)

Frequently Asked Questions:

What types of joints is Swellstop suitable for?
Swellstop is designed for non-moving concrete joints, including cold joints in foundation slabs, precast walls, septic tanks, and wet wells.

Does Swellstop require a primer?
For best adhesion, it is recommended to use Swellstop Primer Adhesive, especially for vertical applications.

How long does Swellstop take to swell?
Swellstop begins swelling immediately upon water contact, with full expansion occurring over several days depending on exposure conditions.

Is Swellstop suitable for expansion joints?
No, Swellstop is intended for non-moving joints only and should not be used as an expansion joint material.

For more details, visit Sika Greenstreak.

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