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DOWSIL CWS 50GL DRUM BLACK

Item #: DOWCWSBL.50  |  Mfr #: 323727
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DOWSIL CWS BLACK 50 GAL

DOWSIL CWS (Contractors Weatherproofing Sealant) is a Medium-modulus 100% silicone joint sealant

DOWSIL CWS (Contractors Weatherproofing Sealant) is suitable for dynamically moving joints such as expansion and control joints, concrete panel joints, tilt-up panel joints, curtainwall 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 (-29-49°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.

  • 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 pails
  • 5-Year Weatherseal Limited Warranty.


Joint Size D x W Inches 1 Gallon 10.3 Fl. Ounce Tube 20.3 Fl. Ounce Sausage 2 Gallon 4.5 Gallon Pail
3/16 x 1/4 411 33 64 821 1848
3/16 x 3/8 272 22 43 548 1232
3/16 x 1/2 205 16 32 411 924
3/16 x 5/8 164 13 26 329 739
3/16 x 3/4 137 11 21 274 616
1/4 x 1/4 411 33 64 821 1848
1/4 x 3/8 272 22 43 548 1232
1/4 x 1/2 205 16 32 411 924
1/4 x 5/8 164 13 26 329 739
1/4 x 3/4 137 11 21 274 616
3/8 x 1/4 411 33 64 821 1848
3/8 x 3/8 272 22 43 548 1232
3/8 x 1/2 205 16 32 411 924
3/16 x 5/8 164 13 26 329 739
3/8 x 3/4 137 11 21 274 616