Product Data Sheet Show all documents

Swellstop

Water Swellable Sealant

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Swellstop is a butyl polymer based sealant tape.

Swellstop is a water-swellable, waterproofing sealant designed for use on many types of poured-in-place and below grade precast concrete applications.
On exposure to water it will begin to swell to seal any exposed gaps in concrete joints. Swellstop has excellent adhesion to clean, dry concrete. It is specifically intended for non-moving joints. It features all weather application and is engineered for use under most temperature conditions.
Swellstop stays flexible in cold weather without shrinking or hardening and does not require heating for application. In hot weather, Swellstop remains pliable and does not become spongy.

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Product Data Sheet Show all documents

Usage

Cold joint in foundation slabs or below grade walls

Precast concrete wall panel systems
Septic tanks
Sanitary and storm sewer manholes
Utility vaults, portable water tanks and box culverts
Pipes (round, oval, flat-base elliptical and arch types)
Wet wells

Please note that Swellstop is not an expansion joint material and should not be used as one. Swellstop requires no special handling equipment. It is clean to the touch and does not contain any material that can discolor or irritate the skin.

Advantages

Swellstop is a water-swellable, waterproofing sealant designed for use on many types of poured-in-place and below grade precast concrete applications.
On exposure to water it will begin to swell to seal any exposed gaps in concrete joints. Swellstop has excellent adhesion to clean, dry concrete. It is specifically intended for non-moving joints. It features all weather application and is engineered for use under most temperature conditions.
Swellstop stays flexible in cold weather without shrinking or hardening and does not require heating for application. In hot weather, Swellstop remains pliable and does not become spongy.

Packaging

Swellstop: 3/4” x 1” X 16’-8” roll (6 rolls or 100’ per carton)
Swellstop II: 3/8” x 3/4” x 25’ roll (6 rolls or 150’ per carton)
Swellstop SC: 1/2” x 3/4” x 1-1/4"x 20’ roll (6 rolls or 120’ per carton)

Color

Black

(ASTM D-1729)

Odor: none

Product Details

Product Information

Shelf Life

2 years when stored in a cool, dark, and dry environment.

Storage Conditions

Store in a cool, dark, and dry environment.

Density

Specific Gravity:

1.60 + 0.05 g/cm3

(ASTM D-297)

Weight per Gallon: 13.3 pounds per gallon

Diameter

Technical Information

Change of volume

% Solids

99% after 4 hours @ 212°F

(ASTM C-771)

Swelling

After 3 days water immersion =
> 25% by weight
After 2 months water immersion =
140-170% by weight

(TP-001)

Application

Application Information

Ambient Air Temperature

-40°F to 215°F

Substrate Temperature

5°F to 125°F

Application steps

SUBSTRATE PREPARATION

Joint surfaces must be clean and dry. For best results, apply adhesive primer to the joint surface (especially vertical joints) before applying Swellstop. The primer creates a tacky surface to ensure a firm bond to the concrete.

Swellstop is installed after the form is stripped from the first pour and before the second pour is placed. A keyway may be formed in the first pour with a slight draft angle at the joint face to accept the Swellstop, this will reduce the risk of the profile shifting during concrete placement. This may increase the chance of Swellstop being exposed to pooling water. However, Swellstop does not need to be located in a keyway. The concrete surface should be smooth, dry, and cured for a minimum of 24 hours prior to Swellstop application.

Brush apply a 2” wide continuous coat of Swellstop Primer Adhesive along the joint and allow it to dry for two hours before applying the Swellstop waterstop. The primer adhesive provides a dust free, tacky surface to improve the adhesion of Swellstop to the concrete.