Sika Sikaflex 11FC Grey 300ml
Sika Sikaflex 11FC Grey 300ml
With Sikaflex 11FC Grey 300ml you’ll handle tough sealing and bonding jobs on concrete, metal, and wood with ease. Its strong, flexible bond resists weather, aging, and vibrations, making it ideal for construction, repairs, and even DIY tasks. You just need a caulking gun for smooth application and it cures in about a day. Proper surface prep guarantees lasting results. Want to master application steps and safety tips? There’s more for you just ahead. Also checkout Sikalite 1kg
Key Takeaways
- High-performance, one-component polyurethane sealant and adhesive
- Bonds concrete, metal, wood, and other common building materials
- Flexible and vibration-resistant—ideal for dynamic joints
- Suitable for indoor and outdoor use: joints, roofing, facades, automotive
- Skin forms in ~45 minutes; full cure in 24–48 hours depending on conditions
Key Features and Benefits
Sikaflex 11FC Grey 300ml delivers:
- Strong adhesion to concrete, metals, and wood
- Flexibility to accommodate movement and vibration
- Weather and aging resistance for long-term durability
- Easy application with a standard caulking gun
- Backed by a trusted supplier with over 25 years in the industry
It’s a go-to solution for professionals and DIYers seeking reliable sealing and bonding performance.
Common Applications
You can use Sikaflex 11FC Grey 300ml for:
- Joint Sealing – Expansion and connection joints indoors/outdoors
- Roofing – Sealing flashing, joints, and leak repairs
- Automotive Bonding – Panels, trim, and vibration-prone areas
- Facade Work – Around windows, doors, and wall elements
Its versatility makes it ideal for both structural and aesthetic sealing tasks.
Surface Preparation Guidelines
Before applying:
- Ensure surfaces are clean, dry, and free of dust, grease, or loose particles
- Brush away debris and wipe with a suitable solvent
- Pay attention to corners and joints
- Test compatibility on plastics or coated surfaces
- Use a Sika-recommended primer for tricky substrates
Proper prep ensures strong adhesion and long-lasting results.
Step-by-Step Application Process
- Cut cartridge tip at a 45° angle to match joint width
- Load into caulking gun
- Apply a consistent bead with steady pressure
- Smooth immediately with a spatula or soapy finger
- Wipe excess with a clean cloth
- Inspect for gaps or bubbles and correct as needed
If adhesion is poor, check for dust or moisture and reapply.
Curing Times and Performance
- Skin formation: ~45 minutes
- Full cure: 24–48 hours (faster in warm, humid conditions)
Once cured, Sikaflex 11FC Grey offers:
- Excellent flexibility and vibration resistance
- Strong adhesion to multiple substrates
- Long-lasting performance in harsh environments
Safety Precautions and Handling
To stay safe:
- Wear gloves and safety goggles
- Ensure good ventilation
- Avoid eating, drinking, or smoking during use
- Follow emergency procedures for skin or eye contact
- Refer to the safety data sheet for full guidance
Your safety ensures a smooth and successful application.
Cleaning and Maintenance Tips
- Wipe excess sealant immediately with a clean cloth and Sika Remover-208
- For cured material, use mechanical methods (scraping or cutting)
- Clean tools promptly to prevent hardened buildup
- Inspect sealed joints regularly for wear or damage
- Address issues early to maintain seal integrity
Comparing Sikaflex 11FC to Other Sealants
| Feature | Sikaflex 11FC Grey | Acrylic Sealants | Silicone Sealants |
|---|---|---|---|
| Adhesion | Strong, multi-surface | Moderate | Good on glass |
| Flexibility | High | Low | High |
| Weathering | Excellent | Fair | Excellent |
| Paintability | Yes (after curing) | Yes | Often limited |
| Application | Easy with caulking gun | Easy | Requires care |
Sikaflex 11FC stands out for its strength, flexibility, and durability.
Frequently Asked Questions
Can it be painted after curing?
Yes—use compatible paints and test a small area first.
What’s the shelf life?
Approximately 12 months in unopened packaging stored below 25°C.
Is it weatherproof?
Absolutely—resists rain, heat, and cold for outdoor use.
Can it be used on natural stone?
Yes—but test first to avoid staining or discoloration.
Does it have an odor?
Yes—a mild odor during application. Use in ventilated areas.
Final Remarks
Think of Sikaflex 11FC Grey like the duct tape of sealants—tough, versatile, and always ready to perform. Whether you're sealing a roof, bonding metal panels, or fixing a drafty window, this product delivers professional-grade results with ease. Keep it in your toolbox, and you’ll always be ready to seal the deal. Shop Sika at Construction Hyper
