Pioneer Extreme Weatherproofing Silicone Sealant is a high-performance, one-part, neutral-cure silicone specially formulated for exterior applications exposed to harsh weather conditions. Designed to withstand extreme temperatures, UV rays, and moisture, it ensures long-lasting, flexible seals for a wide variety of building materials.
Key Features:
Extreme weather resistance – ideal for outdoor use in all climates
UV and moisture resistant – prevents cracking, shrinking, and discoloration
Neutral cure formula – non-corrosive and low odor
Excellent adhesion – bonds to glass, aluminum, concrete, metal, and more
Flexible & durable – accommodates joint movement and thermal expansion
Applications:
Sealing expansion and perimeter joints
Curtain walls, facades, and external cladding
Windows, doors, and aluminum frames
General exterior weatherproofing and construction use
Packaging: Available in 260ml cartridges
Color Options: Typically available in Clear, White, Black.

Note: Not recommended for structural glazing or submerged application