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CS-1500 Rapid-Cure, Elastomeric Sealant

Designed for use in original construction and for repairs that are subject to structural movement: Expansion and Control Joints, Perimeter Caulk Joints, Entry Way Steps, Precast Concrete Panel Joints, Copings, Risers and Tilt-Wall Joints, Bunker Silos, Septic Tanks and Manure Pits.

Technical Data


• CS-1500 is a moisture curing, elastomeric sealant.
• Exhibits flexible, resilient rubber that adheres to a wide variety of substrates including anodized metal and coatings such as Kynar 500® PVDF.
• Joints designed to accommodate 25% total joint movement will not affect the seal or adhesive bond of CS-1500.
• CS-1500 will extend and compress a total of 25% of the installation width.
• Solvent free, 100% solids, will not shrink.
• Paintable with emulsion or synthetic enamel paints within 24 hours.
• No outgassing on damp surfaces.
• Tack free skin is formed in 35 minutes (@ 75°F / 23°C)
• Typical cure takes place in 24 hours.
• CS-1500 can be painted with emulsion or synthetic enamel paints.
• Available in 10.3-ounce cartridges; 5-gallon pails.
• Shelf Life:
  o Cartridges: 12 months when stored at temperature not exceeding 80°F
  o Pails: 3 months when stored at temperature not exceeding 80°F
• Color: Gray

Performance standards

• ASTM C920, Type S, Grade NS, Class 50, Uses NT, T,M,G,A, and O.
• Federal Specification TT-S-00230-C Type II, Class A.
• Corps of Engineers CRD-C-541, Type II, Class A.
• Canadian Standards Board CAN 19, 13-M82.
• SWR Institute Validated (Sealant Waterproofing and Restoration).
• AAMA 802.3-08 Type II, AAMA 803.3-08 Type I, and AAMA 805.2-08 Group C.
• Conforms to OTC Rule for Sealants and Caulks.
• Meets requirements of California Regs: BAAQMD, CARB, and SCAQMD.
• Conforms to California Proposition 65.
• Conforms to USDA Requirements for Non-food Contact


• LEED 2009 for New Construction and Major Renovations: Low Emitting materials (Section 4.1) 1 Point
• NAHB Model Green Home Building Guidelines: 5 Global Impact Points
• VOC Content at 240°F: less than 19 grams/liter (including water), ASTM D2369, EPA Method 24

Safety Data Sheet
Installation Instructions


CS-1500 may be factory or field applied to seal various construction components. No primer is required except on masonry subjected to continuous immersion. Some substrate surfaces may require special cleaning or treatment for optimum performance. Tooling techniques using solvents or soapy solutions are not recommended.


Concrete and masonry surfaces must be free of foreign matter and contaminants. Clean dust and loose particles out of joints. A clean, dry, sound and uncontaminated surface is mandatory. Stone surfaces must be cohesively sound, dry and free of contaminants. Granite, limestone, marble and sandstone must be pre-tested for adhesion prior to sealant installation. Mill finish aluminum may contain an invisible oil film or oxide. Clean working surface with alcohol. Many high-performance coatings or unusual surface treatments may require abrasion of the surface with steel wool or fine emery paper during preparation. In cases where doubt exists, consult Concrete Sealants for recommendations.

Joint design

Recommended maximum joint width should not exceed 1 1/4” (1.250) (3.175 cm) and the maximum joint depth should not exceed 1/2” (0.500) (12.69 mm). Minimum joint width should not be less than 1/4” (0.250) (6.34 mm). The sealant depth should be 1/4” (6.34 mm) for joints 1/4” in width. For joints over 1/4” in width, sealant depth should be 1/2 of the joint width but should not exceed 1/2” (0.500) (12.69 mm) in depth. In order to obtain the recommended sealant mass the joint should be filled with Caulk Backer Rod first, leaving a depth to be filled with sealant. CS-1500 will accommodate up to 50% total joint movement. Desirable backer-rod materials are polyethylene or polyurethane non-gassing foamed rod. Do not puncture the closed cell structure of closed cell polyethylene rod as bubbles could form and migrate to the surface of the curing sealant. The use of open cell backer rod material minimizes this condition.

Recommended Specifications
Product Calculator

Disclaimer: This calculator is designed to act strictly as a guideline for calculating the amount of ConSeal product needed.Concrete Sealants, Inc. is not responsible for inaccuracies, which result from unforeseen conditions.

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