Home > Adhesive & Preventor > Dowsil® 789 Silicone Weatherproofing Sealant 280ml
  • A 280ml cartridge of Dowsil 789 Silicone Weatherproofing Sealant, a professional-grade neutral cure adhesive. This one-part, no-mixing formula features all-temperature gunnability and unprimed adhesion to most common building materials. It is specifically designed for weatherproofing building joints, providing a durable and reliable seal for construction and renovation projects.
  • A professional application of Dowsil 789 Silicone Weatherproofing Sealant being applied with a heavy-duty caulking gun to a vertical building joint. The image demonstrates a person in blue safety gloves applying a precise, uniform bead of white neutral-cure sealant. This high-performance adhesive is designed for weatherproofing building joints and providing a durable, professional-grade seal in construction and renovation projects.
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Dowsil® 789 Silicone Weatherproofing Sealant 280ml

Dowsil® 789 Silicone Weatherproofing Sealant 280ml

Color: Black

Product Details

The Dowsil® 789 Silicone Weatherproofing Sealant (280ml) is a high-performance, one-part neutral cure silicone sealant designed for reliable weather sealing and glazing applications. It forms a durable, flexible rubber-like seal that withstands extreme temperatures, UV exposure, and harsh weather conditions, while offering strong adhesion to glass, metal, and building materials without the need for a primer, making it ideal for long-lasting indoor and outdoor sealing solutions

Product Details

Brand

Dowsil 

Product Type

 Silicone Weatherproofing Sealant

Capacity

 280ml

Type

 Black, Clear, White

Material

Silicone

Features

The Dowsil® 789 Silicone Weatherproofing Sealant (280ml) features a one-part, neutral cure formula for easy application, along with primerless adhesion to most surfaces. It offers excellent weather, UV, and temperature resistance, while maintaining high flexibility and movement capability, ensuring a durable and long-lasting seal for both indoor and outdoor use.

Specific Use 

 The Dowsil® 789 Silicone Weatherproofing Sealant (280ml) is specifically used for sealing expansion joints, curtain walls, window and door perimeters, and glass glazing applications. It is ideal for construction and façade work, providing a weatherproof and flexible seal that accommodates building movement and protects against water, air leakage, and environmental exposure in both indoor and outdoor conditions.
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