SikaSet® Waterplug

SikaSet® Waterplug is a proprietary mix composed of cement, graded silica, calcium hydrocide, fillers, and additives.

1 year when properly stored

Transport and store in an unopened container in a cool, clean, dry area between 45° and 90 °F (7° and 32 °C). Keep the container tightly sealed after opening to maintain the shelf life freshness of the unused portion of the remaining powder.

Test results are averages obtained under laboratory conditions at 70 °F (21 °C) and 50% rh. Reasonable variations can be expected.

Volume: 15.6 in³/1 lb (254 cm³/0.45 kg)
Static cracks: ¾" by ¾" by 28"/1 lb (1.9 cm by 1.9 cm by 70 cm/0.45 kg).

• Do not apply to frozen or frost-covered surfaces.
• Do not apply to dynamic (moving) cracks.
• Do not use to fill expansion joints or control joints.
• Do not remix (retemper) hardened material.
• Always Pre-Dampen the substrate prior to placing SikaSet® Waterplug.
• Do not use it as a surface-applied coating or as a parging material.
• Do not fill voids greater than 30 in3 (490 cm3) in a single lift.
• Do not use if hard lumps have developed in the powder.
• Make certain the most current versions of the product data sheet and SDS are being used.
• Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and not for supervising or providing quality control on the jobsite.

1. Mix SikaSet® Waterplug powder with clean, potable water.
2. Use powder (neat) without adding any aggregates, chemical additives, or admixtures.
3. Add just enough water to mix rapidly by hand to a stiff, low-slump, putty consistency. Mix no longer than 30 seconds.
4. Mix only enough SikaSet® Waterplug that can be successfully placed within 3 minutes under normal conditions (see Temperature). Do not retemper material after initially mixing.
5. Clean the mixing vessel and tools immediately after each use.

Temperature

Cold or hot air, surface, and material temperatures will retard or quicken SikaSet® Waterplug setting time. Special attention must be given when mixing and applying. The SikaSet® Waterplug and mixing water should feel neutral to the touch, normally 70 °F (21 °C). On average SikaSet® Waterplug will set in approximately 3–5 minutes.

Hot weather use

1. From 86° to 100 °F (30° to 37 °C), SikaSet® Waterplug will set very quickly. The material temperature should not be above 80 °F (26 °C) and mixing water over 100 °F (37 °C); otherwise set begins immediately and structural strength lessens when applying during these extreme conditions.
2. SikaSet® Waterplug should always be placed within 30–60 seconds after mixing.
3. If appropriate, use ice water when mixing to slow down the setting action.

Cold weather use

1. SikaSet® Waterplug should be stored or brought up to normal room temperatures, 40 to 70 °F (4 to 21 °C), before mixing and use. Do not apply SikaSet® Waterplug if the ambient air or surface temperatures are 40 °F (4 °C) or less or are expected to fall below 40 °F (4 °C) within 12 hours after initial placement.

• Pre-dampen the substrate prior to installing SikaSet® Waterplug.
• Place SikaSet® Waterplug with minimum working, kneading, or rubbing.
• Force SikaSet® Waterplug repair mortar into cracks or holes and hold it in place (without twisting) until the set is fully achieved.
• Just prior to the final hard set, SikaSet® Waterplug may be “shaved” with a trowel until flush with the surrounding surface. Always shave from the center out, in the direction of the bond line.
• If the repair area is dry at the time of placement, keep the substrate damp for 15 minutes minimum, using a fine spray misting of water, before and after placement.

Sealing Junctions

• To seal static cracks at the junction of floors and walls, route or cut out the crack at least ¾" (19 mm) wide and deep, slightly undercutting if possible.
• Flush away all loose debris, dust, and dirt with clean water.
• Force SikaSet® Waterplug into the prepared crack with a round tool or margin trowel until a set is fully achieved and smooths out to form a cove at wall-to-floor junctions.
• Keep damp for at least 15 minutes.

Stopping Running Water

• To stop active water from running through concrete and masonry, cut out, crack, or hole to a minimum depth and width of ¾" (19 mm). Always square cut or undercut when possible; do not “V” cut.
• Start at the top and force SikaSet® Waterplug into crack. In areas of great pressure, do not place SikaSet® Waterplug into opening immediately. Hold SikaSet® Waterplug in hand or on a trowel until a slight warming occurs. Then press SikaSet® Waterplug firmly into the opening.
• Do not remove the trowel or hand pressure too soon so as to provide some confinement to SikaSet® Waterplug expansion during its set. Do not twist SikaSet® Waterplug during placement or disturb during set time (5 minutes).
• After placement to stop the active water flow, carefully cut and “trowel shave” the patch level with the surrounding surface.

Sealing Leaks in Joints and Cracks

• To stop leaking mortar joints or static cracks in below-grade masonry and concrete walls, cut out defective mortar joints or cracks to a minimum width and depth of ¾" (19 mm). Undercut when possible.
• Force SikaSet® Waterplug into the opening and keep damp for at least 15 minutes or until a set is fully achieved.

Repairing Constructions Faults

• For patching holes and voids, etc., in concrete walls, remove all tie wires and wood or steel separators by cutting back from the surface to a minimum depth of ¾" (19 mm).
• When there is no active water present, repair mortars may be used more appropriately.

Clean tools and equipment immediately with water.