Accuthermax™ Insulated Plasterboard is a high-performance insulated lining panel that combines a 10 mm GIB® paper-faced plasterboard lining with a rigid Resolution® Phenolic Foam Board core, factory-laminated under controlled conditions to create a slim, efficient 3-in-1 solution for internal lining, insulation, and vapour control.

Designed for residential and commercial interior applications, Accuthermax™ Insulated Plasterboard delivers excellent thermal performance in a space-saving profile, making it ideal where energy efficiency and usable floor area both matter.

Manufactured using quality systems and processes aligned with those applied to CodeMark-certified phenolic insulated lining systems, Accuthermax™ Insulated Plasterboard is not itself currently CodeMark certified. Its component materials have been fire tested to recognised standards including AS/NZS 4859.1:2018, AS 1530.3 and ISO 9705, with fire performance to be assessed as part of the completed wall or ceiling system for the specific application.

Product Features and Benefits

High-performance rigid phenolic insulation with low thermal conductivity (λ = 0.023

W/m·K at 15 °C for the insulation core).

• 3-in-1 solution: insulation, interior lining and vapour-control layer in a single board.

• Suitable for use in internal lining systems where fire performance is assessed as part of

the completed wall or ceiling build-up.

• Fire performance to AS 1530.3: zero spread of flame and very low smoke development

for the phenolic core.

• Fibre-free closed-cell core – no loose fibres, easy to cut and handle.

• Slim build-up allows improved internal floor area compared with bulk insulation and

separate lining systems.

• Resistant to water vapour transmission, helping manage internal moisture risk when

detailed correctly.

• Compatible with timber and steel framed construction, and direct-fixed to masonry or

concrete substrates.

• Manufactured with a CFC/HCFC-free blowing agent, with zero Ozone Depletion

Potential (ODP) and low Global Warming Potential (GWP).