DOWSIL™ Contractors Weatherproofing Sealant 10.3oz Cartridge


SKU: N/A Categories: ,

Technical Data Sheet Color Chart

A one-part, moisture cure, medium modulus sealant that provides durable, flexible, watertight joints and offers outstanding unprimed adhesion to most non-porous substrates. It is specifically developed for sealing dynamically moving joints.


  • Dynamically moving joints such as expansion and control joints
  • Concrete panel joints
  • Tilt-up panel joints
  • Curtainwall joints
  • Frame-to-structure and perimeter caulking of windows, doors, panels, EIFS, bedding of mullions, panels and frames, etc.


  • 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, two gallon pails, 5 gallon pails, and 55 gallon drums
  • Choose from 20 standard colors, 19 special colors and custom colors, too
  •  Year Weatherseal Limited Warranty
Typical Properties
Adhesion to Alodine Aluminum, Aluminum, Anodized Aluminum, Brickwork, Ceramic Tiles, Concrete, Enamelled and 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, Polyester Powder Coated Aluminum/Steel, Stainless Steel, Steel, Stone, Vinyl/PVC-U, Wood
Appearance Opaque
Chemistry Neutral
Color Aluminum, Anodized Aluminum, Antique White, Black, Bronze, Buff, Charcoal Gray, Custom, Geographic Beige, Grey, Ivory, Light Bronze, Limestone, Mountain Fog, Off-White, Precast White, Redwood Tan, Sandlewood, Sandstone, White, Window Bronze
Durometer - Shore A 20 to 30
Movement Medium
Movement Capability -40 to 40 %
Peel Strength 20 to 28 ppi
Resistance Type UV, Water, Weathering
Shelf Life 540 Days
Substrate Porous
Tensile Strength 180 psi
Volatile Organic Content 35 g/liter
Application Benefits
Primerless Adhesion Primerless
Processing-Formulating Benefits
Cure System 1-Part Cure
Room Temperature Cure - Hours 168 to 336 Hours
Tack-free Time (50% RH) 360 Minutes
Where Used Job Site

Additional information

Weight 1.6 lbs
Dimensions 1 × 1 × 1 in

Anodized Aluminum, Bronze, Gray