Energy & Acoustics

Whisper Quiet. Naturally Comfortable. All Year Round.

Conventional building envelopes lose massive amounts of energy through uninsulated cavities and thermal bridging. Thermacell encases a solid concrete core in high-grade EPS, providing continuous R-values from R2.0 to R3.81 with zero thermal bridging. When paired with double glazing, this airtight envelope slashes heating and cooling energy demands by 85% to 90%.

This continuous insulation and high thermal mass make achieving 7+ Star NatHERS ratings straightforward and cost-effective under current NCC standards. By stabilising indoor temperatures year-round, Thermacell dramatically cuts HVAC runtimes and locks in long-term energy savings. Hi Indi

Line graph comparing temperature over time between Thermacell and traditional building systems, showing Thermacell maintaining a consistent temperature at the set point.

Slash Heating & Cooling Costs by Up to 90%

Plan a 7+ Star Home
An infographic explaining the Sound Transmission Class (STC) rating for building soundproofing, showing a scale from 20 to 50 with labels for soft, barely heard, and loud noises, and illustrating sound waves with a microphone icon.

Acoustic Performance & Soundproofing

Thermacell eliminates sound transmission through high-density mass and structural dampening. The solid, continuous concrete core absorbs and blocks sound waves, achieving ratings from 43 dB on 125mm internal walls up to STC 50 on 250mm profiles. This mass stops both high-frequency street noise and low-frequency room-to-room transfer—the exact acoustic isolation trusted for Hobart’s Federation Concert Hall.

This acoustic mass works in tandem with the expanded polystyrene envelope, which cushions vibrations and provides continuous thermal insulation from R2.0 up to R3.81. By pairing acoustic density with complete thermal separation, the system shuts out noise and thermal bridging simultaneously, keeping interiors whisper-quiet and comfortable in every season.

Ask About Sound-Rated Walls

Thermacell was the Acoustic Choice of Architects and Sound Engineers Of Hobarts’ Federation Concert Hall

Empty theater with red seats, wooden interior, and ceiling with many small lights.
Construction site with scaffolding and a circular building under construction.

Federation Concert Hall Hobart

Proven R-Values: High Thermal Resistance Backed by Real Engineering

Bar chart comparing R-Values of different insulation materials, with Thermacell having the highest R-Value at 2.88 and solid concrete the lowest at 0.30.

A building envelope's thermal efficiency is defined by its R-Value—the measure of thermal resistance against heat entering in summer or escaping in winter. While conventional materials like timber framing with glass fibre batts, weatherboards, and uninsulated brick veneer suffer from continuous thermal bridging, Thermacell encases a solid concrete core in thick expanded polystyrene to create a continuous, unbroken thermal shield with exceptional R-ratings.

Ask About Certified R-Ratings

Complete Thermal and Acoustic Isolation for Every Build

Construction site with concrete foundation and rebar stakes in a dry, rocky terrain.

Thermacell delivers high-performance thermal insulation and sound barrier performance far beyond standard external walls. The system is engineered for a diverse range of demanding applications—including whisper-quiet party walls in multi-storey builds, sound-dampened home theatre rooms, earth-sheltered basements, and thermally insulated concrete swimming pools that trap water heat and reduce heating power demands.

Because services are routed directly into the outer EPS foam layer, plumbing pipework and electrical conduits never breach or compromise the monolithic concrete core. This ensures the structural sound barrier remains 100% intact, preventing acoustic leaks between rooms. Whether paired with stone veneer, non-combustible cladding, or direct render, the system maintains continuous thermal resistance from R2.0 to R3.81 and dense acoustic isolation across any architectural design.

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Common Questions

  • Thermacell completely encases a dense concrete core in continuous expanded polystyrene (EPS), eliminating thermal bridging entirely. This airtight envelope traps conditioned air inside while blocking external temperature extremes, dramatically lowering active HVAC runtimes and reducing heating and cooling power demands by 85% to 90%.

  • Thermacell wall profiles provide verified thermal resistance ratings ranging from R2.0 for 125mm internal dividing walls up to R3.81 for 250mm external profiles. These ratings are independently calculated by RMAX engineers and recognised by CSIRO and Australian building authorities to easily satisfy modern 7+ Star NatHERS requirements.

  • Airborne sound requires physical mass to stop transmission. Thermacell’s monolithic concrete core provides exceptional acoustic density, delivering sound reduction ratings from 43 dB up to STC 50. This blocks low- and high-frequency sound—including heavy street traffic, sirens, flight paths, and loud entertainment systems—far more effectively than lightweight cavity framing.

  • Yes. When installed on internal dividing walls, Thermacell provides complete room-to-room acoustic separation. Furthermore, because electrical conduits and plumbing lines are chased directly into the outer EPS foam layer rather than penetrating the wall cavity, the solid concrete acoustic barrier remains 100% unbroken.

  • Yes. Thermacell's acoustic dampening and sound isolation capabilities meet commercial performance standards. The system was specifically selected by architects and acoustic engineers for the construction of Hobart’s Federation Concert Hall, proving that the standard residential blockwork delivers world-class acoustic containment and clarity.

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