H-BAU ISOPRO® ISOMAXX® Thermally Insulated Balcony Connectors

H-BAU ISOPRO® and ISOMAXX® systems provide thermally insulated, connections for concrete balconies and walkways to meet part L of the building regulations. Available with up to 120 min. fire protection, the ISOPRO®  thermal break system has an 80mm thickness of insulation, and is the most commonly used system to prevent cold bridging, The ISOMAXX® system provides 120mm of insulation for maximum thermal performance.

In 2020, our ISOPRO® and ISOMAXX® range of thermally-isolated balcony connection products have recently been issued with a European Technical Assessment (ETA 17/0466). The document provides verification by UK and European building authorities of product performance in up to 120 minutes of fire conditions.

Technical Evaluations:

European Technical Assessment ETA-17/0466

Fire resistance - EN 1365-1 to REI 120

DNGB Evnironmental Product Certification

LEED Product Declaration

ISOPRO® and ISOMAXX® provide low deflection shear and moment connections while preventing thermal bridging at the connection points. The thermal insulation provided improves the overall thermal efficiency of the building envelope and so helps prevent heat loss, condensation, and mould growth in interior rooms.

Typical applications include:

  • Concrete balcony connections
  • Concrete walkway connections
Data Sheet
H-BAU ISOPRO® and ISOMAXX® Thermally Insulated Balcony Connectors
H-BAU ISOPRO® and ISOMAXX® Thermally Insulated Balcony Connectors


  • Excellent thermal insulating properties for concrete balconies
  • Resistant to water penetration
  • Wide range of sizes and configurations
  • Excellent fire resistance.
  • Calculation and product selection software


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