SiF Si20-DS – 20L Ready to Use

Si20-DS is a water-based, penetrating silicate-siliconate densifier and water repellent sealer for porous limestone and concrete building materials. It increases substrate density, hardness and strength while reducing dusting and water movement.

Suitable for concrete and porous limestone.

20L ready-to-use densifier and sealer. No dilution required.

Key Benefits

• Strengthens and hardens the substrate
• Reduces surface dusting
• Repels water and helps resist water-based stains
• Helps minimise efflorescence
• Reduces water movement and surface organic growth
• Contains no solvents or VOCs

Recommended Surfaces

• Concrete
• Porous limestone

Dilution

Use undiluted. Mix thoroughly before application.

Application

Read the product information before application. Always test a small area for suitability.

1. Remove contaminants that could prevent penetration.
2. Check porosity with water droplets. If they have not soaked in within two minutes, treatment may be ineffective.
3. Ensure new concrete has properly cured. Remove standing water; the surface may remain damp.
4. Do not apply below 5°C, above 30°C, during extreme weather, or if rain is forecast within 24 hours. Mist warm surfaces to cool them.
5. Spray at low pressure, working in lightly with a broom or mop if needed. Saturate evenly; apply any further coats while still wet.
6. Spread puddles and remove surplus before drying. Dried white residue requires mechanical removal, such as sanding or grinding.
7. Immediately wipe splashes from glass, metal and paint: the alkaline product may damage them.
8. Keep traffic off for 24 hours minimum. Wash tools with water.

Important Notes

Some surfaces may darken. Clean spills promptly; prolonged contact can cause permanent staining.

Typical Properties