SikaSil® 825 – High-Performance Neutral Cure Silicone Sealant

SikaSil® 825 is a premium-grade, one-part neutral-curing silicone sealant designed for weatherproofing, glazing, and façade applications. With excellent UV, weather, and ageing resistance, this durable silicone offers long-term elasticity and reliable adhesion on a wide variety of substrates including glass, metals, plastics, and masonry.

Ideal for curtain walling, perimeter sealing of windows and doors, and expansion joints, SikaSil® 825 provides outstanding performance in both commercial and residential construction. Its non-corrosive formula ensures compatibility with sensitive surfaces, while its ease of application makes it a go-to choice for professional installers and contractors.

Key Features:

• Excellent UV and weather resistance
• Permanently elastic – ideal for expansion joints
• Neutral cure – non-corrosive to sensitive materials
• Adheres to most common construction substrates without primer
• Easy to apply and smooth – perfect for vertical and horizontal joints
• Available in multiple colours for aesthetic integration
• Low Modulus Neutral Cure
• Used on various materials
• +/- 25 % Flexibility
• Ideal for expansion joints
• Non-corrosive
• C4 Size Cartridge
• Nozzles not included