Name: Sikafloor CureHard-24 15L
Brand: Sika
Price: 62.00 USD
Availability: InStock

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Sikafloor CureHard-24 15L

$62.00

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.