Primerless on EIFS and most common nonporous building substrates, including
glass and aluminum.
Balanced adhesive strength, medium modulus and high recovery.
Excellent all-weather gunnability and performance.
Extension/compression capability of ±25 to ±40 percent.
Available in 10.3-ounce cartridges, 20-ounce sausages and two-gallon
5-Year Weatherseal Limited Warranty
Dynamically moving joints such as expansion and control joints
Concrete panel joints
Tilt-up panel joints
Frame-to-structure and perimeter caulking (windows, doors, panels, EIFS,
radon mitigation, bedding of mullions, panels and frames, etc.)
This unique, weather-resistant formulation is ideal to withstand adverse
conditions, including moisture, movement, sheer and deflection, in common
installations. It is easily gunnable in all weather conditions from -20 to
120°F (-29 to 49°C). Because it requires no mixing and a smaller joint
thickness requirement, it is an economical, high-performance alternative to
other sealant options with a ±25 to ±40 percent movement capability. CWS
is available in 20 standard stocked colors, 19
made-to-order special colors and a virtually unlimited palette of custom
Dow Corning Contractors Weatherproofing Sealant is available in sausages, cartridges and pails.