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HORIZONTAL JOINT SEALANT
DESCRIPTION
GARDOX horizontal joint sealant is a pourable, two-component, cold-applied compound for sealing joints in concrete. The product contains chemically reactive polymers, plasticized with coal tar, that cure to a durable, rubber-like joint seal that offers a firm, smooth, non-tracking surface, retaining flexibility from -20° F (-29° C) to over 200° F (93° C). GARDOX effectively seals the joint against water infiltration and rejects incompressibles. GARDOX is resistant to jet fuels and most common solvents and chemicals. GARDOX can accommodate a joint movement of +/-25% when a 2:1 minimum width-to-depth ratio
is maintained and proper application techniques
are followed.
USES
GARDOX is recommended for sealing horizontal joints on highways, airport runways, bridges, plaza decks and driveways. Interior uses include sealing joints in industrial floors, garage floors, airplane hangar floor joints, etc.
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FEATURES/BENEFITS |
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PACKAGING
1 gallon unit consists of ½ gallon (1.89 L)
of base and ½ gallon (1.89 L) of catalyst
in an imperial gallon container.
4 gallon unit consists of two gallons (7.57 L) of catalyst in a two-compartment, five-gallon (18.93 L) pail.
SHELF LIFE
GARDOX should be stored in a cool warehouse. Like many top quality, two-component sealants, GARDOX has a limited (maximum six months)
shelf life.
NOTE: Do not open pail until ready to use, as this significantly reduces shelf life.
COVERAGE
7.47 gal./ft³ (1000 L/m³). A 1/2” x 1/4” (12.7 x 6.3 mm) joint will require 0.65 gallons/100 lineal feet (8 L/100 m).
APPLICATION
Surface/Joint Preparation…Remove foreign substances, incompressibles and free water from joint opening. For proper adhesion, joints must be clean and dry. Dust, dirt and laitance should be removed prior to application.
Priming…GARDOX adheres well to unprimed concrete; however, the use of P/G PRIMER from W. R. MEADOWS is recommended for optimum adhesion.
Joint Sizes...Use in HORIZONTAL joints only. Proper joint design practices and application techniques must be followed for successful performance. GARDOX should NOT be used in joints less than 1/4” (6.35 mm) wide. A 2:1 width-to-depth ratio should be maintained. However, in no case should joint sealant depth be less than 1/4” or exceed 1/2”. To control sealant depth, insert W. R. MEADOWS KOOL-ROD™ backer rod or CERAMAR® in the joint before sealing. For larger joints, where additional support is required, use a non-asphalt joint filler such as CORK EXPANSION JOINT from W. R. MEADOWS. For straight joint edges, mask off top surfaces with masking tape.
Mixing…THE TWO COMPONENTS ARE PRE-MEASURED TO EXACT QUANTITIES. MIX ALL MATERIAL SUPPLIED IN BOTH CONTAINERS; DO NOT MIX PARTIAL UNITS. It is absolutely essential that the catalyst and base material be thoroughly integrated and completely blended to achieve the required “chemical cure” and to function effectively.
To blend properly, pour the catalyst from the top container into the larger base material container. Then blend thoroughly, either by hand, mixing with a wooden paddle or with a slow speed drill and flat-bladed paddle used with care. In either case, the materials must be thoroughly stirred around and up and down ... the sides and bottom of the container must be scraped occasionally to assure complete integration of the two components. For mechanical mixing, use a typical commercial mixing paddle. These are available in most paint and hardware stores. DO NOT USE a bent rod stock mixer.Application Method…… Pour GARDOX into joint with any clean, suitable pouring container. NOTE: GARDOX has a work life of approximately three hours; less at temperatures above 70° F (21° C). GARDOX will self-level and cure to a rubber-like compound in 72 hours at air and surface temperatures above 70° F (21° C). Surface may be dusted with talc or cement to reduce surface tack. Sealant will be tack-free in approximately 12 hours.
Clean Up… Clean tools and equipment with Xylene or Toluene and remove masking tape before the sealant starts to set.
PRECAUTIONS
GARDOX components are pre-measured to exact quantities. Mix all materials in container; do not mix partial units or dilute. Do not use GARDOX at temperatures below 40° F (4° C) or in wet joints. If expected movement is greater than +/-25%, GARDOX should not be used in this application. Do not apply GARDOX to galvanized surfaces. GARDOX may be used on steel and other non-galvanized metals only when the surfaces are first cleaned to bright metal, acid-etched and P/G PRIMER is used. Do not use in joints subjected to hydrostatic pressure. Do not use in conjunction with polystyrene insulation or place in direct contact with asphalt joint materials, unless a polyfilm interrupting strip or backer rod is used. GARDOX is not recommended for swimming pools or joints in ice rinks. GARDOX is not compatible with asphalt joint fillers or asphalt concrete pavements.
HEALTH HAZARDS
Avoid contact with skin or prolonged breathing of vapors. Refer
to Material Safety Data Sheet for
complete health and safety Information.
This material last updated
July 2007.
