Thermal Break Blocks for Energy-Efficient Slab Edges by Marmox Australia

Thermal Break Blocks for Energy-Efficient Slab Edges by Marmox Australia.

Thermal bridging at the wall-to-floor junction remains a common source of heat loss in Australian buildings, particularly where slab edges and load-bearing transitions interrupt the insulation line. Marmox Thermoblock is designed to address that weak point with a structural thermal break that supports both energy performance and internal comfort.

The product combines extruded polystyrene (XPS) insulation with load-bearing epoxy-concrete columns and polymer-concrete facings, creating a block that is both waterproof and structurally capable. With a thermal conductivity of 0.05 W/mK and a compressive strength of 9 N/mm2, it is intended for use at the base of masonry, timber-framed or steel-framed walls, including critical junctions beneath thresholds and slab edges.

Thermal Break Blocks for Energy-Efficient Slab Edges by Marmox Australia.

By replacing the usual bottom course at these junctions, Thermoblock helps reduce heat loss, improve surface temperatures and limit moisture-related issues at vulnerable interfaces. That makes it a practical detailing option for projects aiming to improve whole-of-building energy efficiency without compromising structural continuity.

For technical support and detailing guidance, contact Marmox Australia on 1300 783 693 or visit marmox.com.au

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1300 783 693

63 Norman Street, Peakhurst NSW 2210

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