39.0mm Reinforced Thermal Break Strip – K5 Structure for High-Strength Aluminum Systems

Product Overview

The 39.0-K5 thermal break strip is an advanced insulation profile engineered for demanding architectural applications. While maintaining the same width (39.0 mm) as the K1 type, this K5 variant features a more robust cross-sectional design, offering increased resistance to deformation and better integration in high-load or complex aluminum profiles.

Its structure is particularly suited to projects where thermal insulation must be matched with mechanical stability, such as unitized curtain walls or systems with high wind-load and span requirements.

Technical Specifications

• Material: PA66 GF25 (25% Glass Fiber Reinforced Polyamide)

• Width: 39.0 mm

• Profile Type: K5

• Thermal Conductivity: ≤ 0.3 W/m·K

• Tensile Strength: ≥ 80 MPa

• Heat Deflection Temperature: ≥ 230°C

• Linear Expansion Coefficient: (2.3–2.7) × 10⁻⁵ /K

• Color: Black (custom options available)

Applications

Specifically designed for high-structural-demand and precision aluminum systems, including:

• Unitized Curtain Wall Systems

• High-Rise and Coastal Buildings (subject to high wind pressure)

• Heavy-Duty Aluminum Windows and Doors

• Façade Systems with Complex Load Requirements

• Advanced Passive House and Energy-Efficient Projects

Product Advantages

• Enhanced Structural Support: K5 geometry increases bending and shear resistance

• Stable Under Load: Minimizes deformation in wide-span or load-bearing systems

• Reliable Insulation Performance: Maintains thermal isolation even under stress

• Precision Fit: Engineered to meet tight groove tolerances and complex frame assemblies

• Versatile Use: Suitable for both mechanically fixed and bonded aluminum systems