H-BAU ISOPRO® ISOMAXX® Thermally Insulated Balcony Connectors

H-BAU ISOPRO® and ISOMAXX® thermal break systems provide low deflection shear and moment connections, while preventing thermal bridging at the connection points between concrete balconies and the concrete building structure. The thermal insulation at the connection improves the overall thermal efficiency of the building envelope and so helps prevent heat loss, condensation, and mould growth in interior rooms. Consequently, H-BAU ISOPRO® and ISOMAXX® thermal break systems help designers comply with part L of the building regulations.

H-BAU ISOPRO® and ISOMAXX® connection products are 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.

The H-Bau ISOPRO® and ISOMAXX® range of thermal breaks have been issued with a UK Technical Assessment (UKTA-0836-22/6154) and a European Technical Assessment (ETA 17/0466). The documents provide verification by UK and European building authorities of product performance in up to 120 minutes of fire conditions.

ISOPRO® and ISOMAXX® design software is available from the downloads section of this product page and is designed to assist designers with product selection and load distribution design.  The software enables designs for all common balcony configurations and also enables designs for custom balcony shapes. This aclaimed design software is free to download and easy to use. Technical support is also readlity available from the J & P team of engineers.


Technical Evaluations:

UK Technical Assessment UKTA-0836-22/6154

European Technical Assessment ETA-17/0466

Fire resistance - EN 1365-1 to REI 120

DNGB Evnironmental Product Certification

LEED Product Declaration


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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