DOWSIL 758 White Silicone Weather Barrier Sealant
SHIPS WITHIN 24-HOURS, IF IN-STOCK.
$50 MINIMUM ORDER VALUE
SDS
$25.75
DOWSIL 758 White Silicone Weather Barrier Sealant 20 oz Sausage is a high-performance, one-part neutral cure silicone elastomeric sealant formulated for superior adhesion to difficult-to-bond substrates. Designed specifically for air and weather barrier systems, this sealant adheres primerless to a wide variety of low surface energy materials including polyethylene, polypropylene, PVC, and common polyolefins. It also bonds to self-adhered and nonwoven spunbound flashing materials, making it ideal for use in window flashing, wraps, and fenestration assemblies.
With a medium movement capability of ±25%, low VOC formulation, and exceptional UV resistance (passes 5,000-hour QUV testing), DOWSIL 758 delivers long-lasting durability and performance. The fast working time and single-component packaging make it jobsite ready for efficient installations.
- Sold individually; to order a full case, add 16 sausages to your cart
- Adhesion to Tough Surfaces: Provides excellent primerless adhesion to difficult materials like polyethylene, polypropylene, PVC, polyolefins, and more.
- Weatherproof Durability: Formulated for long-term exposure, with proven performance in 5,000-hour QUV testing.
- Low VOC & Easy Application: Single-component formula is ready-to-use and compliant with low-VOC regulations.
- Ideal for Building Envelopes: Perfect for sealing self-adhered window flashings, wraps, and weather barrier systems.
- Flexible & Strong: Offers ±25% movement capability with high tensile strength and low sag.
- Application Versatility: Performs across a wide range of materials including metal, fluorinated surfaces, and nonwoven barriers.
- Volume: 20oz sausage
- Cure Type: Neutral Cure (1-Part)
- Appearance: Opaque
- Tensile Strength: 200 psi
- Movement Capability: ±25%
- Substrates: Anodized aluminum, fluoropolymers, painted surfaces, vinyl/PVC-U, and other non-porous materials
- Special Features: UV-resistant, primerless adhesion, adhesion to special plastics
You May Also Like
