Sikaflex® PRO-3 WF is an advanced, one part, moisture-curing polyurethane sealant designed with exceptional mechanical resistance, making it the premier choice for heavy duty floor joints.
In 2026, as industrial and logistical infrastructure demands higher durability, Sikaflex PRO-3 stands out as an engineering solution that combines permanent elasticity with high resistance to chemicals and mechanical stress.
Specialist STC Company provides this high-performance sealant from STC platform to ensure maximum protection for floors in the most demanding environments.
Supplied by Specialist STC Company, this product is essential for:
Factories and Warehouses: Designed for floors subjected to heavy forklift traffic and industrial machinery.
Gas Stations and Garages: Offers excellent resistance to oils, fuel, and hydrocarbons.
Wastewater Treatment Plants: High chemical resistance suitable for sewage and treatment facilities.
Clean Rooms: Ideal for pharmaceutical and food industries due to low outgassing and safety certifications.
Tunnels and Bridges: Used in structural joints exposed to high vibration and environmental stress.
Technical Specifications
Chemical Base: Polyurethane with i-Cure technology.
Movement Capability: ±25% (According to ISO 11600).
Shore A Hardness: Approx. 35–40 (Provides edge protection for concrete joints).
Temperature Resistance: -40°C to +70°C.
Curing Time: Skin formation within 60–90 minutes (at 23°C).
Key Features
Superior Mechanical Power: Resistant to abrasion and high tire pressure.
Broad Chemical Resistance: Withstands diluted acids, alkalis, and fuels.
Bubble-Free Curing: Advanced technology ensures a dense internal structure without voids.
Excellent Adhesion: Bonds strongly to old and new concrete, stone, and metals.
2026 Sustainability: Low VOC emissions and environmentally friendly.
Method Statement (Execution)
To ensure peak performance via Specialist STC Company supplies:
Preparation: Joints must be dry and completely free from dust, grease, and debris.
Priming (Optional): Using Sika Primer 3N is recommended for high water immersion areas.
Backing Rod: Insert a closed-cell Polyethylene backing rod to regulate sealant depth.
Application: Extrude the sealant using a manual, pneumatic, or electric gun.
Tooling: Smooth the surface immediately with a tooling spatula for a professional finish.
mportance of Sikaflex PRO-3 in Projects
The primary importance of this product lies in preventing concrete edge spalling at the joints the most common failure in large warehouses.
It also prevents chemical leaks into the soil, protecting foundations from corrosion and extending the total lifecycle of industrial floors.
Conclusion
Sikaflex PRO-3 WF remains the gold standard for industrial flooring in 2026.
Through Specialist STC Company, we guarantee authentic products at competitive rates, ensuring the sustainability and quality of your structural projects.