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DOWSIL™ 758 Silicone Weather Barrier Sealant

A one part, neutral cure silicone sealant, designed for adhering to low energy surfaces common in sheet or peel and stick weather resistant barriers. Primerless adhesion to LDPE, anodized aluminum, vinyl, powder coated aluminum, Kynar® coated aluminum.

Uses:

Strong adhesion strength to:

  • Self-adhered window flashing and wraps
  • Nonwoven spunbound window flashing and wraps
  • Polyethylene wraps
  • Polyethylene surfaces
  • Polypropylene surfaces
  • Common polyolefins
  • PVC
  • Steel, aluminum and metals
  • Fluorinated surfaces

Benefits:

  • High adhesion strength
  • Long-term silicone durability
  • Low-VOC formulation
  • Single-component, primerless application
  • ±25% movement capability
  • Passes 5,000 hr QUV test

Properties

These values are typical properties and are not intended for use in preparing specifications.

  • Adhesion to Yes No Fluoropolymers, Paint, Vinyl/PVC-U, Anodized Aluminum
  • Color Yes No White
  • Cure Type Yes No Neutral Cure
  • Durometer - Shore A Yes No 30 Shore A
  • Elongation Yes No 800 %
  • Flow/Sag (Slump) Yes No 0.06 mm
  • Movement Capability Yes No -25 to 25 %
  • Number of Parts Yes No One
  • Primerless Adhesion Yes No Primerless
  • Resistance Type Yes No UV Resistance
  • Tensile Strength Yes No 200 psi
  • Volatile Organic Content Yes No 25 g/liter
  • Working Time Yes No 15 Minutes
DOWSIL™ 758 Sealant sticks to most demanding substrates without primer

Get primerless adhesion to window flashing and fenestration materials

Innovative DOWSIL™ 758 Silicone Weather Barrier Sealant solves the challenge posed by plastic- and polyolefin-based window flashing and fenestration materials, sticking to the most demanding substrates without need for a primer.

Detail drawing showing DOWSIL™ 758 Sealant placement
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Please Contact Dow for additional information.

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DOWSIL™ 758 Silicone Weather Barrier Sealant
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Please Contact Dow for additional information.

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DOWSIL™ 758 Silicone Weather Barrier Sealant


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DOWSIL™ 758 Silicone Weather Barrier Sealant
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