Hardie™ Gravis™ Panel Floor
Strength you can feel underfoot
Autoclaved Aerated Concrete
75mm
600mm
1800mm
Non-combustible: Fire Resistance Levrovel (FRL) of 90/90/90
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About Hardie™ Gravis™ Panel Floor
Hardie™ Gravis™ Panel Floor brings the strength and comfort of concrete to first floors, suspended ground floors, decks and balconies. The robust 75mm autoclaved aerated concrete (AAC) tongue and groove panel provides a solid, stable base for any floor covering.
It gives a concrete-like feel underfoot, free from squeaks and bounce, with good thermal and acoustic insulation that helps reduce noise between levels. Non-combustible and quick to install, it is a smart choice for both residential and multi-residential builds. Once installed, the system is ready for floor finishes within 24 hours, helping keep the build moving.
Backed by James Hardie’s reputation and technical support, it is a dependable choice for durable, comfortable and quiet living spaces.
Technical Specifications & Variants
Full Specifications
| Material | Autoclaved Aerated Concrete |
| Thickness (mm) | 75mm |
| Width (mm) | 600mm |
| Length (mm) | 1800mm |
| Joint Design | Tongue and Groove |
| Steel Reinforcement | Single Mesh |
| Panels per Pack | 10 |
| Weight per Panel (kg) | 56 |
Where to Use Hardie™ Gravis™ Panel Floor
First floors
A strong, stable subfloor for upper levels in residential and multi-residential construction. The concrete-like feel and reduced inter-level noise suit living spaces.
Suspended ground floors
A solid, stable base for any floor covering
Decks and balconies
A subfloor for external areas. Make sure the Big River page matches James Hardie's installation guide scope ("Flooring – Internal & External").
When NOT to Use This Product
- Wall → See Hardie™ Gravis™ Panel Wall
Downloads & Documentation
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