Hebel® PowerBlock™ for Multi-Storey Builds: Structural & Thermal Advantages

04 December 2025

CladCor Building Solutions delivers Hebel® PowerBlock™ for multi-storey builds in Melbourne—structural strength, thermal efficiency, plus acoustic gains.

Hebel® PowerBlock™ delivers a compelling alternative to double brick for multi-storey projects in Victoria. Its high strength-to-weight ratio, inherent fire resistance, and superior thermal performance help reduce structural loads, accelerate programmes and improve building comfort—without compromising compliance or finish quality. For developers, architects and builders seeking a dependable masonry solution, it offers a streamlined path from specification to handover.

What is Hebel PowerBlock (AAC) and Where It Fits in Multi-Storey Design

Hebel® PowerBlock™ is an autoclaved aerated concrete (AAC) system made from mineral-based ingredients, formed into precise blocks and pressure-cured. The resulting lightweight yet solid units feature a fine cellular structure that boosts thermal and acoustic performance and accelerates construction—ideal for external walls, intertenancy and corridor walls, plant rooms, stair cores, and service risers in multi-storey buildings. Compatible with common coatings and renders, it supports diverse façade aesthetics without compromising robustness.

Structural Advantages for Multi-Storey Applications

A well-detailed wall system can improve buildability and whole-of-life value on mid-rise and mixed-use projects.

•  Strength-to-Weight Efficiency – Hebel® PowerBlock™ provides the solid feel of masonry at a fraction of the mass of traditional double brick. Lower wall dead loads can translate to slimmer structural frames, reduced footing demands and improved crane logistics—valuable benefits on constrained metropolitan sites.

•  Faster, Cleaner Programme – Large-format blocks, thin-bed mortar and straightforward set-out enable rapid wall construction, fewer wet trades and more predictable sequencing. This supports earlier enclosure, earlier services rough-in and fewer weather delays compared with conventional brickwork.

•  Design Flexibility and Compliance – It integrates smoothly with typical multi-storey details—lintels, control joints, slab and balcony junctions—while supporting the acoustic, fire and energy targets required under the NCC. Clear, systemised detailing helps engineers, certifiers and builders align on responsibilities and documentation from tender to practical completion.

Thermal Performance & Energy Efficiency

PowerBlock™’s micro-cellular structure from Hebel® reduces thermal bridging, helping stabilise internal temperatures across Victoria’s seasonal swings. Fewer layers deliver high thermal resistance, simplifying build-ups, maximising floor area, and cutting HVAC demand—reducing energy costs and boosting NABERS/Green Star performance. With compatible renders and targeted insulation, design teams can fine-tune wall thicknesses to meet façade requirements while maintaining a slim profile and consistent finish quality.

Fire & Acoustic Benefits for Multi-Residential and Mixed-Use

Hebel® PowerBlock™ offers reliable life-safety and amenity outcomes across apartments, hotels, student housing and mixed-use developments.

•  Non-Combustible, Inherent Fire Resistance – As a mineral-based AAC product, it is non-combustible and delivers robust fire performance for external walls, shafts and fire-isolated stairs. This aids compliance and simplifies specification where façade combustibility is tightly regulated.

•  Intertenancy Privacy and Noise Control – The mass and cellular structure of this contributes to effective airborne sound reduction between apartments and along corridors. With appropriate jointing and junction detailing, projects can achieve reliable acoustic separations that enhance resident comfort.

•  Safer Penetrations and Services Integration – It accommodates service penetrations with predictable fire-stopping and acoustic sealing. Coordinated penetrations, sleeves and set-outs help services trades maintain compliance while preserving wall performance and build quality.

Engage CladCor Building Solutions for Hebel® PowerBlock™ Success

CladCor Building Solutions supplies and installs Hebel® PowerBlock™ across Melbourne and Regional Victoria, providing estimating support, take-offs and experienced installation teams to keep programmes on track. Our technical guidance streamlines specification, detailing and delivery, so you realise the structural, thermal and acoustic advantages it promises without delays or rework.

For a prompt quote or design discussion, contact us today.

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