Sikafloor® CureHard-24
$62.00
Sale price
$62.00
Regular price
Skip to product information
Sikafloor® CureHard-24
$62.00
Sale price
$62.00
Regular price
Sikafloor® CureHard-24
A high-volume solids, one-part, clear sodium silicate-based liquid hardener and densifier for fresh or hardened concrete. Reduces dust emissions, increases abrasion resistance by 81.5%, and seals concrete surfaces. Odourless and easy to apply. CE marked per EN 1504-2.
Overview
Specifications
| Property | Value |
|---|---|
| Type | 1-part sodium silicate liquid surface hardener |
| Colour | Clear |
| Density | 1.2 kg/L at +20°C (EN ISO 2811-1) |
| Solid Content | 24% by mass |
| Abrasion Resistance (treated) | 1350 mg (H22/1000g/1000 cycles) – 81.5% increase vs untreated |
| Tensile Adhesion Strength | 4.8 N/mm² (EN 1542) |
| Penetration Depth | 5.5 mm (EN 1504-2) |
| Water Absorption | w = 0.03 kg·m⁻²·h⁻⁰·⁵ (EN 1062-3) |
| Impact Resistance | 60 Nm, Class III ≥20 Nm (EN ISO 6272-1) |
| Touch Dry at +20°C | 2 hours |
| Full Cure at +20°C | 5 hours |
| Max. Sealing & Hardening | 7 days at +20°C |
| Shelf Life | 24 months from date of production |
| Storage | Dry, +5°C to +40°C, original sealed packaging |
Usage
- Hardening and densifying concrete surfaces requiring light to moderate abrasion resistance
- Dust-proofing prefabricated concrete elements
- Horizontal old or new concrete surfaces
- Industrial, commercial, and public buildings – interior and exterior
Advantages
- Reduces dust emissions vs untreated concrete
- 81.5% increase in abrasion resistance vs untreated concrete
- Seals concrete surfaces
- Very good yellowing resistance
- One-part – ready to use
- Easy to apply by spray
- High gloss with regular cleaning
- Odourless
- LEED v4 MR Credit compliant – EPD available
- CE marked per EN 1504-2
Packaging
- 15 L container
- 200 L drum
Colour
- Clear
Product Details
Product Information
| Property | Detail |
|---|---|
| Composition | Sodium silicate water dilution |
| Solid Content | 24% by mass |
| Shelf Life | 24 months from date of production |
| Storage Conditions | Dry, +5°C to +40°C, original sealed packaging |
Technical Information
| Property | Value | Standard |
|---|---|---|
| Abrasion Resistance (treated) | 1350 mg (H22/1000g/1000 cycles) | EN 1766:2000 |
| Abrasion Resistance (untreated) | 270 mg (H22/1000g/1000 cycles) | EN 1766:2000 |
| Impact Resistance | 60 Nm (Class III: ≥20 Nm) | EN ISO 6272-1 |
| Tensile Adhesion Strength | 4.8 N/mm² | EN 1542 |
| Penetration Depth | 5.5 mm | EN 1504-2 |
| Water Absorption | w = 0.03 kg·m⁻²·h⁻⁰·⁵ | EN 1062-3 |
Curing & Ready for Use
| Temperature | Overcoating Wait Time | Full Cure |
|---|---|---|
| +5°C / 50% r.h. | 3.5 hours | – |
| +10°C / 50% r.h. | 3 hours | 6 hours |
| +20°C / 50% r.h. | 2 hours | 5 hours |
| +30°C / 50% r.h. | 1.5 hours | 4 hours |
Application
Application Information
| Parameter | Value |
|---|---|
| Ambient Temperature | +5°C min / +35°C max |
| Substrate Temperature | +5°C min / +35°C max |
| Relative Humidity | Max. 100% |
Consumption
- 0.15–0.25 L/m² per coat (4–7 m²/L) on power-trowelled concrete
- A second coat is required on porous, rough-textured, or brush-finished surfaces
Application Steps
- Substrate – Fresh Concrete (≥7 days): Finish using power floating, manual floating, or tamping. Cure for at least 7 days with water spray, blankets, or plastic sheets.
- Substrate – Hardened/Old Concrete: Clean with high-pressure water cleaner. Allow to dry completely. Remove all dust, dirt, and loose material with brush or vacuum.
- Important – Remove Existing Treatments: Completely remove any curing agents, membrane-forming sealers, or asphalt before application.
- Application: Apply in a continuous film using a high-volume, low-pressure spray unit. Do not use sprayers previously used for silicones or release agents. Touch up any dry spots immediately.
- Scrubbing: Scrub material into the surface with a soft bristle broom or floor-scrubbing machine for minimum 30 minutes until the material begins to gel and becomes slippery.
- Reworking: Wet the surface slightly with water spray and rework for another 10–20 minutes.
- Removal of Excess: After ~20 minutes when material returns to a gel, rinse the floor and remove excess with a squeegee, wet vacuum, or mop. Dried residue leaves white stains removable only mechanically.
- Second Coat: Apply on porous or rough surfaces after the first coat is dry and tack-free.
- Before Subsequent Coating: After cure, abrade the surface mechanically (light to heavy shot blasting) before applying any subsequent coating system.
- Hot Weather (>+25°C): Store product in a cool place. Apply additional material to keep surface wet during scrubbing.
- Moisture Protection: Protect treated surface from moisture for at least 3 days after application to prevent efflorescence.