Keratrade Joint Band

Flexible Waterproofing Tape for Expansion & Structural Movement Joints

Keratrade Joint Band is a high-performance thermoplastic elastomer (TPE) sealing tape designed for flexible, long-term waterproofing of expansion joints, wall–floor junctions, and structural movement areas.

Engineered as part of the BuildGreen Waterproofing System, it integrates seamlessly with Keratrade and Kerakoll membranes to deliver a continuous, watertight seal in dynamic environments, including podiums, balconies, wet areas and civil infrastructure.

Key Features

• High elasticity for movement and expansion joints

• Elongation ≥ 480% (horizontal) / ≥ 560% (vertical)

• Permanent watertight and vapour-impermeable barrier

• High tensile strength and tear resistance

• UV resistant – no visible degradation (2000 hrs)

• Water pressure resistance ≥ 1.5 bar

• Thermal stability from –20°C to +80°C

• Compatible with Keratrade & Kerakoll liquid membranes

• No heat welding required – embeds directly into liquid membrane

• Manufactured under ISO 9001 / ISO 14001 standards Certifications / System Compliance

• Designed for systems compliant with:

• AS 4654.1 (External Above-Ground Waterproofing)

• AS 4858 (Internal Wet Area Waterproofing)

• EN 1928 Water Pressure Resistance

• ASTM G154 UV Resistance

• ISO 12572 Vapour Impermeability

Available In

• Standard Roll: 120 mm × 50 m

Technical Data (Typical Values)

• Density: 1.03 ± 0.02 g/cm³

• Shore Hardness: 19 ± 3 A

• Shrinkage: ≤ 1.2%

• Service Temperature: –20°C to +80°C

• Water Pressure Resistance: ≥ 1.5 bar

• Vapour Permeability: Impermeable

Chemical Resistance (7 Days @ +23°C)

Resistant to:

• Hydrochloric Acid (3%) – Good

• Sulphuric Acid (35%) – Good

• Citric Acid – Excellent

• Sodium Hypochlorite – Excellent

• Salt Water – Excellent

• Mild Alkalis & Detergents – Good

Installation Summary

• Embed into wet, compatible Keratrade or Kerakoll liquid membrane
• Overlap adjoining lengths minimum 50 mm
• Fully encapsulate with second membrane coat
• Do not apply directly to bare substrates
• Not suitable for permanent immersion in strong solvents or oils