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Dow Contractors Weatherproofing Sealant (CWS) - 10.3 Fluid Ounce Cartridge

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Dow Contractors Weatherproofing Window Bronze Sealant Cartridge CWSWBRZ
$5.53 each
12 or more|$5.41 each
  • 10.3 fluid ounce cartridge
  • Primerless and applies to most non-porous building substrates
  • Strong adhesive strength and flexible while able to stand up to weather extremes
  • One part neutral-cure economical alternative to many other similar sealants
  • Self-priming to most common building substrates, including most fluoropolymer-based paints
SKU:
CWSWBRZ
Color Chart
Case qty = 12
Return Policy | Shipping Policy

Dow Contractors Weatherproofing Sealant (CWS) (formerly Dow Corning Contractors Weatherproofing Sealant) is a one-part, moisture cure, medium modulus silicone sealant that provides durable, pliable, watertight joints and offers outstanding adhesion without priming to most non-porous substrates. With its unique weather-resistant formula, it possesses a balanced adhesive strength and very high recovery, making it ideal to withstand adverse weather conditions in common installations including moisture, movement, sheer, and de-flection. It is easily gunnable in all weather conditions from -20 to 120 degrees F. Because our Dow contractors weatherproofing silicone caulking requires no mixing and a smaller joint ratio, it is an economical, high-performance alternative to other comparable sealants with a ±40 percent movement capability.

Applications

  • Alodine Aluminum 
  • Aluminum
  • Anodized Aluminum
  • Brickwork
  • Ceramic
  • Concrete
  • Enamelled & Reflective Glass
  • Extruded Mill Finish
  • Fluorocarbon Coated Aluminum
  • Glass
  • Granite
  • Heat Strengthened Glass
  • Light-Weight Stone Panels
  • Limestone
  • Low E Coated Glass
  • Marble
  • Masonry
  • Metal
  • Metal Panels
  • Paint
  • Plastic
  • Polyester Powder Coated Aluminum/Steel
  • Stainless Steel
  • Steel
  • Stone
  • Vinyl/PVC-U
  • Viny to vinyl
  • Wood
  • Most non-porous building substrates
  • Expansion joints
  • Control joints,
  • Concrete panel joints
  • Tilt-up panel joints
  • Curtainwall joints
  • Perimeter caulking around windows, doors, panels, EIFS, bedding of mullions, panels, and frames, etc.

Limitations

  • Silicone structural glazing
  • Application in confined areas without proper ventilation
  • Joints under constant water submersion

This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

Series
CWS
Container Size
10.3 fl. oz.
Container Type
Cartridge
Data SheetData Sheet
Safety Data SheetCWS Aluminum SDSCWS Anodized Aluminum SDSCWS Antique White SDSCWS Black SDSCWS Bronze SDSCWS Charcoal SDSCWS Gray SDSCWS Limestone SDSCWS Off-White SDSCWS Precast White SDSCWS Sandalwood SDSCWS Sandstone SDSCWS White SDSCWS Window Bronze SDS
Color ChartColor Chart
InstructionsProduct Instructions
Buying Guides

Available Options

SKU Color / Finish Sample Case Qty
CWSWBRZ Window Bronze Window Bronze 12
CWSW White White 12
CWSPW Precast White Precast White 12

Technical Information

ManufacturerDow
SeriesCWS
Quantity1 Cartridge
Contents10.3 fluid ounces
CompositionHigh-performance, medium modulus, one-part, neutral-cure silicone sealant
PaintableNo
Primer neededNone to most substrates
Full adhesion14-21 days
Tack-free time3 - 6 hours at 50%RH 
Curing time7 - 14 days at 77 degrees F at 50% RH
Application temperature (substrate) range-20 to 120 degrees F
Joint movement capabilities/expansion-compression±40%
Peel strength20 - 28 pounds per inch
Surface temperature, cured bead-40 to 250 degrees
Shelf life18 months from manufacturing date

Dow Contractors Weatherproofing sealant may be used on concrete, but the surface needs to be primed with Dow Primer P prior to application. It is recommended that an adhesion test be performed on a small section of concrete to ensure that the bond is within specifications of your project.

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