Sika precast

Product Title: Sikaflex®-428 Precast – Elastic Joint Sealant for Concrete – White (600ml)

Product Overview: Sikaflex®-428 Precast is a high-performance, 1-component elastic joint sealant designed specifically for movement and connection joints in precast concrete structures. Formulated with advanced Silane-Terminated Polyurethane technology, it offers excellent adhesion to concrete, masonry, and GRC (Glass Reinforced Concrete) without the need for primers in most cases. Its robust formula is UV-stabilized and weather-resistant, making it ideal for both indoor and outdoor applications, even in hot or tropical climates.

Key Features:

• High Elasticity: Accommodates joint movement of ±25% (ASTM C719), ensuring a durable seal under thermal expansion and contraction.

• Weather Resistant: Excellent resistance to weathering and UV radiation, preventing cracking or chalking over time.

• Versatile Adhesion: Bonds strongly to precast concrete, masonry, block work, and roof joints.

• Paintable: Can be over-painted with most conventional facade paint systems.

• Eco-Friendly: Low VOC content for safer application.

Suitable Applications:

• Joints between precast concrete elements.

• Connection joints in GRC and GRP parts.

• General masonry and facade joints.

• Roof terminations and parapet wall joints.

Specifications:

• Brand: Sika

• Color: White

• Volume: 600 ml (Foil Pack/Sausage)

• Material: Silane-Terminated Polyurethane