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DEFENDAIR™ 200C Air and Weather Barrier Coating

A 100% silicone liquid applied Air and Weather Barrier designed to protect against air infiltration and water penetration. The vapor permeable, one component, water-based coating cures to form a flexible membrane that is impervious to water but has the ability to “breathe,” allowing water vapor to escape from inside the substrate.

Uses:

Strong adhesion strength to common wall substrates, including:

  • DensGlass
  • Concrete masonry units (CMU)
  • Oriented Strand Board (OSB)
  • Plywood
  • Exterior Sheathing
  • Preformed Panels
  • Steel stud walls
  • Rainscreens

Benefits:

  • Airtight performance that exceeds industry standards
  • Passes NFPA 285 assembly testing
  • Improved shelf life
  • Aesthetically pleasing charcoal gray color
  • Reduced appearance of dirt pickup
  • Improved energy efficiency and durability
  • Can be applied at temperatures as low as 20°F (-6°C)
  • Long-term UV resistance and enhanced weatherproofing
  • Water-based, low-VOC formulation 
  • Vapor-permeable and breathable
  • One-coat spray application; may also be roller applied
  • Primerless adhesion to even the most challenging construction substrates
  • Complete offering of compatible accessory materials 

Properties

These values are not intended for use in preparing specifications.

Typical Properties

  • Adhesion to Yes No Concrete, OBS/Sheathing, Preformed Panels, Plywood, Wood or Steel Stud Walls (typically unprimed)
  • Breathable Yes No true
  • Color Yes No Charcoal Gray
  • Elongation Yes No 650 %
  • Resistance Type Yes No Ozone Resistance, UV Resistance, Water Resistance
  • Sealing Performance Yes No true
  • Shelf Life Yes No 360 Days
  • Solventless Yes No true
  • Technology Yes No Solventless
  • Volatile Organic Content Yes No < 19 g/liter

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Please Contact Dow for additional information.

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DEFENDAIR™ 200C Air and Weather Barrier Coating
No Technical Data Sheets are available online for this material.
Please Contact Dow for additional information.

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DEFENDAIR™ 200C Air and Weather Barrier Coating
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