Sikafloor Level 25 | MCT CHEMICALS | SIKA PAKISTAN

Sikafloor® Level-25CA is a single-component, polymer-modified, versatile, and durable floor screed designed for interior concrete floors. It can be applied either manually or using a pump to achieve quick, smooth, and cost-effective substrate leveling before installing the final floor finish. It is typically applied at a thickness of 5–25 mm (3/16–1 inch).

Applications

• Factories
• Commercial buildings
• Cellars
• Corridors
• Warehouses
• Hospitals
• Residential areas
• Fast-track construction projects
• Leveling precast concrete slabs

Advantages

• Self-levelling with high fluidity
• Suitable for both pump and manual application
• Ideal for renovating and leveling old floors
• Rapid drying time
• Foot traffic accessible in 4 hours at 23°C (73°F)
• Excellent base for tiles, sheet flooring, wood floor bonding, and resin flooring
• Low odor
• Can also serve as a wearing surface

Technical Data

• Packaging: 25 kg (55 lb) bags
• Color: Concrete grey
• Yield: Approximately 14 L (3.7 US gal.) per bag
• Coverage per 25 kg bag:
  • 5 mm (3/16 in) thickness: 2.8 m² (30 ft²)
  • 10 mm (3/8 in) thickness: 1.4 m² (15 ft²)
  • 16 mm (5/8 in) thickness: 0.88 m² (9 ft²)
  • 25 mm (1 in) thickness: 0.56 m² (6 ft²)
  • (Values are approximate and do not account for surface porosity, profile, or wastage)
• Shelf Life: 1 year in unopened packaging, store in a dry location at temperatures between 5°C and 25°C (41°F and 77°F) away from rain, moisture, or high humidity
• Mix Ratio: 4.25 L (1.12 US gal.) water per 25 kg (55 lb) bag

Properties at 23°C (73°F) and 50% RH

• Density (wet mix): 2.07 kg/L (129 lb/ft³)
• Application Temperature: Minimum 10°C (50°F), maximum 25°C (77°F)
• Application Thickness: 5 mm (3/16 in) minimum, 25 mm (1 in) maximum
• Compressive Strength (ASTM C109):
  • 24 hrs: 18.8 MPa (2727 psi)
  • 3 days: 22.8 MPa (3307 psi)
  • 7 days: 24.5 MPa (3553 psi)
  • 14 days: 28 MPa (4061 psi)
  • 28 days: 31 MPa (4496 psi)
• Setting Time (ASTM C266):
  • Initial set: 30 minutes
  • Final set: 40 minutes
• Flowability (ASTM C230 modified):
  • 0 min: 300 mm (11.8 in)
  • 15 min: 240 mm (9.45 in)
• Working Time:
  • 25 mm (1 in) thickness: 20 minutes

Overcoating Times

• Water-based materials: 8 hours
• Solvent-free materials: 24 hours
• Solvent-based materials: 36 hours

Final Drying Time

• Foot traffic: 4 hours
• Lightly serviceable: 1 day
• Fully serviceable: 2 days

Volume Change (ASTM C531):

• 28 days: +0.036%

Pull-Out Strength (on concrete) (CSA-A23.2-6B)

• 10 mm (0.39 in) thickness: 2.50 MPa (362.6 psi) (substrate failure)
• 25 mm (1 in) thickness: 2.30 MPa (333.6 psi) (substrate failure)

Application Instructions

• Surface Preparation & Priming:
  Ensure the substrate is clean, dry, and stable. Remove any existing treatments, coatings, sealers, or contaminants. Use mechanical methods like shotblasting, sandblasting, or water-jetting to create a fine, open-textured surface. Surface defects should be repaired with a suitable Sika mortar before priming. All loose materials should be removed with a vacuum before applying Sika® Level-01 PrimerCA.
• Mixing:
  Add 4.25 L (1.12 US gal.) of potable water to a mixing container and gradually add the powder (25 kg/55 lb). Mix using a low-speed electric mixer (300–400 rpm) for at least 3 minutes until uniform. Let the mixture sit until air bubbles are mostly dispersed.
• Application:
  • Pump: Use a floor screed mixer and pump, adjusting water to achieve a flowable consistency (4.25 L per 25 kg). After pumping, spread using a trowel or pin screed rake, then spike-roll in two directions to remove marks and air.
  • Manual: Pour the mixture onto the pre-primed surface and spread with a trowel or pin screed rake, then spike-roll in two directions to remove marks and air.
• Curing: Sikafloor® Level-25CA must be air-cured. Do not use wet curing or curing compounds.

Clean Up: Clean tools and equipment with water. Hardened material may need to be mechanically removed.

Limitations

• Protect the stored material from moisture and humidity.
• The product should be conditioned to temperatures between 18°C and 29°C (65°F and 84°F) before mixing and installation.
• Do not exceed the recommended water dosage.
• Protect from condensation and water for at least 24 hours after application.
• Not suitable for slopes exceeding 0.5%.
• Not intended for aesthetic finishes.
• For interior use only.
• Mechanical preparation is required before overcoating with Sikafloor® resins or additional layers.
• Ensure moisture content meets requirements when overcoating.