Kaiflex KKplus s3 – Low-Smoke, Closed-Cell Insulation for Public and Commercial Buildings

The Kaiflex KKplus s3 Collection features high-performance flexible elastomeric insulation designed for enhanced fire safety, thermal efficiency, and condensation control in HVAC and building services. Manufactured by Kaimann, KKplus s3 is engineered for use in public, commercial, and high-occupancy buildings where low smoke development and reliable thermal performance are critical.

Product Overview

Kaiflex KKplus s3 is a closed-cell, synthetic rubber insulation material with integrated water vapor barrier and low thermal conductivity. It is available in tubes and sheets, including endless rolls, and is suitable for both new installations and retrofits.

Key specifications:

• Material: Flexible elastomeric foam (FEF)
• Thermal conductivity: ≤ 0.033 W/(m·K)
• Water vapor diffusion resistance: μ ≥ 10,000
• Fire classification: Euroclass C-s3, d0 (EN 13501-1)
• Temperature range: -50 °C to +110 °C
• Formats: Tubes, sheets, endless rolls, and cut-to-size options

Applications

• HVAC pipework and ductwork in public buildings
• Chilled water and refrigeration systems
• Hot and cold water services
• Service risers and plant rooms
• Areas requiring low smoke development and reliable condensation control

Performance Benefits

• Low smoke emission for improved fire safety in escape routes and occupied spaces
• Excellent thermal insulation and condensation resistance
• Closed-cell structure prevents moisture ingress and corrosion under insulation
• Integrated vapor barrier eliminates need for additional sealing
• Easy to install, cut, and shape around complex geometries