Technical Application Data

PREPARATION of substrate surface prior to the application of JointSeal is important as durability is only as good as its adhesion. The surface temperature must be 5° above dew point and no condensation is present on the surface. JointSeal requires the concretely surface be clean/dry and free from contamination. Normally, chipping or blasting is sufficient to obtain proper bonding. Mild detergent may be used to remove oils and dirt. Rinse thoroughly and blow dry. Surface application temperature may range from 20°F (-29 C) to 150°F (65 C). This product may be applied with cartridge gun, hand mixed or plural component liquid pumping equipment. Gel time range at 75°F (24 C) is 4min. Apply JointSeal in a heavy over-filling quantity, let cure for 30 minutes prior to shaving level with floor. Heated material is not required if ambient temperature is above 70°F (21 C). Store materials in dry environment. For long storage, displace air in drums with nitrogen. Always wear safety gear when applying isocyanate/polyol resin based systems.

RANDOM FRACTURES Remove all existing joint sealer and joint backer. Any moisture present in the joint should be eliminated prior to installation. Using a diamond blade saw, saw the joint vertically to 90° angles to a minimum depth of 1 inch. The joint should be widened slightly to ensure adhesion to freshly opened concrete. Care should be taken not to adversely affect adhesion by “burnishing” the sides of the joint with a grinder. After sawing or grinding, care should be taken that minimal amounts of dust and debris are left over in the joint. The joint should be vacuumed using a common “shop-vac” to remove as much dust and debris as possible. In some cases, closed cell joint backer can be used to prevent “sinkers” or continuously running material. It should be noted that the use of joint backer does not provide optimum joint protection. It may be necessary to stop “sinkers” by making several passes over the joint and allowing the material to cure in between passes. JS and Joint Seal Vertical should be placed in the joint full depth, overfilled, and allowed to cure for a minimum of ten minutes before shaving level with the concrete.

APPLICATION NOTES It is very important to maintain constant pressures while installing JS or Joint Seal Vertical with a plural component pump. A variation in pressures can result in loss of properties, poor color retention and bubbling. Hose heat is not required at ambient temperatures. Low temperatures may require the use of hose heat to improve flow ability.

REPAIRS AND MAINTENANCE Repairs to divots caused by unforeseeable abuse can be repaired very easily. The damaged area should be removed down to sound JS or Joint Seal Vertical and concrete. It may be necessary to remove JS and Joint Seal Vertical with a pocketknife or pneumatic saw and should include removal of all damaged materials to the fresh concrete. The damaged area should be squared to 90° and solvent wiped with acetone. JS or Joint Seal Vertical should be placed in the damaged area.

CLEAN-UP/DISPOSAL The uncured isocyanate and resin portions should be mixed together. This creates a non-hazardous cured product that may be disposed of without restriction. “Drip-free” containers should be disposed of in accordance with local, state and federal laws.

LIMITATIONS JS and Joint Seal Vertical are aromatic polyureas. While the physical properties may not be affected, the elastomer could yellow and chalk with exposure to UV or Hg vapor light. It is highly recommended to use a dark color for any application requiring color stability. If color stability is mandatory, contact the manufacturer for recommendations. The chemical resistance chart should be consulted prior to any application. JS and Joint Seal Vertical were designed to protect the edges of concrete control and expansion joints. JS and Joint Seal Vertical will pull away from the joint edges if too much slab movement is encountered. This characteristic allows for easy replacement and to alert the property owners that movement is present.

ADDITIONAL RESULTS In certain cases, it may be recommended by the manufacturer to utilize a different formulation speed or hardness depending upon the specific needs of the application. The JS and Joint Seal Vertical series offers several different hardness readings from 85 (Shore A) to 95 (Shore A). The physical properties, gel times, and reaction times vary with the formulation. 

SHELF LIFE AND STORAGE Six months in factory delivered unopened drums. Keep away from extreme heat, cold, and moisture. Maintain at a proper storage temperature of 60°F – 80°F. The components used in the JS and Joint Seal Vertical have been specially formulated to withstand low temperature applications. The material can be stored at temperatures as low as 10° F with no gelation of the components. However, it is recommended to warm the material to a minimum of 60° F before application.

APPLICATION EQUIPMENT JS and Joint Seal Vertical may be applied using a plural component pump (1:1 or 2:1 by Volume), hand mixing, or by plural component cartridges. This proportioning unit must be capable of supplying the correct pressure and heat for the required hose length on a consistent basis. This characteristic is mandatory to apply this elastomer in a consistent, efficient manner. When hand mixing, care must be taken to mix and pour quickly as JS and Joint Seal Vertical are designed to gel quickly. For small jobs, JS and Joint Seal Vertical are available in cartridges.

NEW CONCRETE: INTERIOR CONTROL JOINTS/EXPANSION JOINTS – The concrete should be allowed to cure for a minimum of 60 to 90 days. Any moisture present in the joint should be eliminated prior to installation. Using a diamond blade saw, saw the joint vertically to 90 ° angles to a minimum depth of 1 inch. The joint should be widened slightly to ensure adhesion to freshly opened concrete. Care should be taken not to adversely affect adhesion by “burnishing” the sides of the joint with a grinder. After sawing or grinding, the joint should be vacuumed using a common “shop-vac” to remove as much dust and debris as possible. In some cases, closed cell joint backer can be used to prevent “sinkers” or continuously running material. It should be noted that the use of joint backer does not provide optimum joint protection. It may be necessary to stop “sinkers” by making several passes over the joint and allowing the material to cure in between passes. JS should be placed in the joint full depth, overfilled, and allowed to cure for a minimum of ten minutes before shaving level with the concrete.

AGED CONCRETE: INTERIOR CONTROL JOINTS/EXPANSION JOINTS – Remove all existing joint sealer and joint backer. Any moisture present in the joint should be eliminated prior to installation. Using a diamond blade saw, saw the joint vertically to 90 ° angles to a minimum depth of 1 inch. The joint should be widened slightly to ensure adhesion to freshly opened concrete. Care should be taken not to adversely affect adhesion by “burnishing” the sides of the joint with a grinder. After sawing or grinding, care should be taken that minimal amounts of dust and debris are left over in the joint. The joint should be vacuumed using a common “shop-vac” to remove as much dust and debris as possible. In some cases, closed cell joint backer can be used to prevent “sinkers” or continuously running material. It should be noted that the use of joint backer does not provide optimum joint protection. It may be necessary to stop “sinkers” by making several passes over the joint and allowing the material to cure in between passes. JS should be placed in the joint full depth, overfilled, and allowed to cure for a minimum of ten minutes before shaving level with the concrete.

SPALLS/BLOWOUTS Remove all existing materials from the spall or blowout. Any moisture present in the spall should be eliminated prior to installation. Using a diamond blade saw, saw the joint vertically to 90° angles to a minimum depth of 1 inch. The spall should be widened slightly to ensure adhesion to freshly opened concrete. Care should be taken not to adversely affect adhesion by “burnishing” the sides of the joint with a grinder. After sawing or grinding, remove residual dust and debris. Fill the spall/blowout with dry rock filler (i.e. dry pea gravel if required) to one inch of the surface. Fill the remaining void to surface level with JS or Joint Seal Vertical.

Adhesion Results

Adhesion Results of Typical Substrates per ASTM D-4541 Elcometer

Substrate Surface Preparation

Preparation of substrate surface prior to the application of a SuperSkinSystem is extremely important to achieve proper system bonding.

Concrete must be fully cured and should be prepared with a sandblasting, diamond grinding or machine sanding depending on the severity of the concrete surface condition. Similar proper preparation must be performed for metals. Primers also require this proper preparation. Always power clean using mild detergent prior to sanding, etc. Call TechSupport Group for assistance with selecting SSS application system. Also read the Application Page on this website. If patching concrete, use mineral filled fast-set Acrylic Modified Epoxy applied by trowel. For expansion joints, use Joist Seal applied by hand cartridge dispensing gun. It is always best to perform a test within a small section of the application area prior to full scale engagement.

This technical data information is accurate to the best of our knowledge. SuperSkinSystems™ Inc. makes no warranty, expressed or implied within the materials on this website, its use or with its any application. SuperSkinSystems™ Inc. shall not be liable for material or application related injuries, material non-conformance, application failures or any consequential damage by the use of this product.