SikaLatex KH (25KG) | WATER RESISTANT BONDING AGENT AND MORTAR ADMIXTURE

Product Category: Bonding Agent & Mortar Admixture Brand: Sika Model Code: SikaLatex® KH

Description

SikaLatex® KH is a synthetic rubber emulsion (SBR-based) used as a bonding agent and mortar admixture, designed to improve adhesion, strength, and durability of cement-based materials.

Applications

As Bonding Agent

• Concrete to new concrete bonding

• Repair works

• Screeds and overlays

As Mortar Admixture

• Grouts and screeds

• Patch repair mortars

• Masonry mortars

• Renders

• Tile fixing mortar

Key Features

• Strongly increases adhesion

• Reduces shrinkage and cracking

• Improves abrasion resistance

• Reduces permeability (better waterproofing)

• Improves workability

• Suitable for most construction substrates

Product Information

• Type: SBR bonding agent / admixture

• Composition: Styrene-butadiene emulsion

• Appearance: White liquid

Packaging

• 5 L pail

• 25 L pail

Shelf Life

• 12 months

Storage

• +5°C to +30°C

• Protect from sunlight, frost, contamination

Technical Properties

• Density: ~1.0 kg/L

• Chloride Content: ≤0.1%

Mix Design (Typical Usage)

1. Bonding Agent

• Cement: 20 kg

• Water: 5 L

• SikaLatex: 5 kg

• Mix ratio: 1 : 1 (Latex : Water)

→ Coverage: ~20 m²

2. Repair / Render Mortar

• Cement: 50 kg

• Sand: 150 kg (0–3 mm)

• Water: 20 L

• SikaLatex: 5 kg

• Mix ratio: 1 : 4 (Latex : Water)

3. Tile Adhesive Mortar

• Cement: 30 kg

• Sand: 90 kg (0–1 mm)

• Water: 10 L

• SikaLatex: 5 kg

• Mix ratio: 1 : 2 (Latex : Water)

→ Coverage: ~12 m² (5 mm thickness)

4. Floor Screed

• Cement: 50 kg

• Sand: 150 kg (0–6 mm)

• Water: 20 L

• SikaLatex: 5 kg

• Mix ratio:

  • Standard: 1 : 4

  • High wear resistance: 1 : 3

→ Coverage:

• 10 m² (10 mm thick)

• 5 m² (20 mm thick)

• 3 m² (30 mm thick)

Application Method

Bonding Bridge

• Mix SikaLatex solution with cement

• Apply slurry (~1 mm thick) with brush

• Apply new mortar/concrete while still wet

Mortar Applications

• Prepare SikaLatex solution (mix with water)

• Add cement and sand

• Mix until uniform

• Apply mortar to required thickness

Surface Preparation

• Substrate must be:

  • Clean

  • Free from dust, oil, grease

  • Sound and strong

• Remove weak or damaged concrete

• Remove rust and contaminants

Important Notes

⚠️ VERY IMPORTANT:

• Do NOT use SikaLatex alone without cement

• Always mix with cement → otherwise bonding will fail

• Apply bonding slurry and new mortar wet-on-wet

Performance Advantages

• Strong bonding between old and new concrete

• Improves mortar durability

• Enhances waterproofing performance

• Reduces cracking and shrinkage

• Increases service life of structures

Safety & Handling

• Follow SDS guidelines

• Store in sealed packaging

• Avoid contamination

Additional Notes

• Lab-tested values

• Site conditions may affect performance

• Local regulations may vary

Summary

SikaLatex® KH is a high-performance bonding agent and admixture, improving adhesion, strength, and durability of cement-based materials, making it essential for repair, screed, and tile applications.