IsoBarrier Composite Rigid Noise Barrier

Description

Nankarrow Isobarrier is a high-performance, multilayered acoustic panel engineered to deliver exceptional airborne and structure-borne sound insulation. Designed for use in walls, ceilings, and floors across commercial, industrial, transport, and marine environments, it combines the superior damping of a viscoelastic core with the structural integrity of magnesium oxide (MgO) boards.

Its innovative construction mitigates the “coincidence dip” found in standard plywood or fiber cement panels, ensuring consistent acoustic performance across a broad frequency range.

Key Features

• High-density viscoelastic core (up to 2000 kg/m³) for maximum sound attenuation

• Composite multilayer design with outer MgO board layers

• Superior damping compared to standard timber, plywood, and sheet metal

• Zero formaldehyde – Classified as CARB-NAF per AS/NZS 2098.11

• Available in multiple thicknesses – 10 mm, 14 mm, 18 mm, and 20 mm

• Custom thicknesses between 10–25 mm available on request

• Easy to fabricate using conventional woodworking and hand-held power tools

• Weather & Boil Proof (WBP) glue bonding tested to BS 1088

• FSC® and PEFC™ certified material sourcing

• Fire-safe and low-VOC composition

Technical Specifications

*STC and Rw ratings based on ISO 15186-1:2003 and ISO 10140-4:2010 testing

Acoustic Performance

Frequency Range: 100 Hz to 5000 Hz
Isobarrier delivers high sound transmission loss across low and high frequencies, achieving up to 42 dB at 5000 Hz. It maintains consistent performance even in frequency ranges affected by the coincidence dip in traditional materials.

Applications

• Acoustic walls, floors, and ceilings

• Floating floors when used with isolation mounts

• VIP rooms, studios, cinemas, and cabins

• Machinery enclosures and acoustic booths

• Marine partitions and rail or motor coach interiors

Sustainability

Nankarrow Isobarrier supports forest sustainability through the use of responsibly sourced materials certified by FSC® and PEFC™. It contains no added formaldehyde, making it safe for indoor environments and LEED-compliant construction.

Custom sizing and project-specific guidance available on request. Contact our technical team for support.