Technical specification for James Hardie JHML112290A fibre‑cement cladding, covering product details, installation and safety.
This document provides a detailed technical specification for James Hardie's JHML112290A external cladding range, including PrimeLine® weatherboard, HardiePlank® weatherboard, PanelClad® sheet and HardieFlex™ sheet. It outlines product features, material composition, and recommended applications for residential and commercial projects.
The specification also includes guidance on framing, fixing, moisture management, ground clearance, and safe working practices, together with tables of recommended fasteners, nail sizes and installation tolerances.
| HardieFlex sheet thickness | 4.5 mm and 6 mm |
|---|---|
| PanelClad sheet thickness | 6 mm |
| HardiePlank weatherboard thickness | 7.5 mm |
| Minimum ground clearance | 150 mm |
| Fastener edge distance | ≥12 mm from sheet edges, ≥50 mm from corners |
The cladding must be installed with at least a 150 mm clearance to the earth.
For timber framing, use 2.8 × 30 mm fibre‑cement nails for 4.5 mm and 6 mm thick sheets, and ensure fasteners are at least Class 3 external grade.
No, 4.5 mm thick HardieFlex sheets must not be used as bracing.