Sikaflex®-428 Precast is a 1-part, moisture-curing, elastic sealant designed specifically for sealing joints in precast concrete construction. It delivers excellent adhesion to concrete and related substrates, ensuring reliable performance in demanding precast and infrastructure environments.

This high-performance sealant accommodates joint movement caused by thermal expansion, shrinkage, vibration, and structural movement, maintaining a flexible and watertight seal over time. Its non-sag consistency allows easy application in both horizontal and vertical joints, making it suitable for factory and on-site precast installations.

✅ Key Features

✔ One-part, moisture-curing flexible sealant
✔ Specially formulated for precast concrete joints
✔ Excellent adhesion to concrete and masonry
✔ Accommodates joint movement and vibration
✔ Suitable for horizontal and vertical applications
✔ Durable, elastic, and crack-resistant
✔ Resistant to water, weathering, and UV exposure
✔ Easy application with non-sag consistency
✔ Ideal for infrastructure and precast projects