James Hardie document
Scyon Secura Flooring Installation Guide
The official James Hardie installation guide for Scyon Secura Flooring, a structural fibre cement flooring board for internal and external residential floors over timber or steel joists. It covers board thickness and joist spacing, fastener selection and spacing, butt joints and sealing, interior and exterior applications, and deck falls and drainage. Read it on this page or download the PDF.
What this covers
- Board Thickness & Joist Spacing
- Fastener Selection & Spacing
- Butt Joints & Sealing
- Interior & Exterior Applications
- Deck Falls & Drainage
- Loading & Framing
Key things to remember
The essentials from this guide, at a glance.
- 19mm Secura Flooring spans joists at 450mm maximum centres; 22mm spans at 600mm maximum.
- Boards are colour-coded, with a green front corner for 19mm and grey for 22mm, and long edges are tongue and groove.
- All square sheet edges and movement joints must be fully supported by framing.
- Fasteners are fixed at 200mm maximum centres with a minimum 12mm edge distance and must be at least Class 3.
- Leave a 5mm butt/movement joint with a 10mm backing rod set 5mm below the surface, then seal with Hardie Joint Sealant.
- Sheets are glued and screwed; for exterior decks lay boards chamfer up, tile within 3 months and design a minimum 1:100 fall away from the building.
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Need Scyon Secura Flooring for the job in this guide?
Scyon Secura Flooring is available to order from Allmat for builders and trade across Adelaide and South Australia, on one order with the framing, fixings and sealants the guide calls for.
Sizes and profiles are on the Scyon Secura Flooring page.