Expansion gaps
From 0°C to 40°C, expansion gaps of 1mm per metre each side are required. Get this wrong and boards crack — get it right and they'll hold for decades. We mark the gap on every install instruction card.
Installation guide
The right way to install your composite deck.
Read this before you start cutting boards. Every order ships with a printed install card too — keep it on the job site.
Full guides (PDF): Composite & PVC decking · Aluminium framing · All guides & warranties
Tools & materials
Cordless drill, mitre or circular saw, spirit level, Ezy-bit, joist hangers, clips, screws. Full kit list comes with every order.
Joist spacing
450mm maximum for Origin, PVC/ASA and Premium Solid (400mm for commercial or diagonal lays). 400mm maximum for Premium Semi-Solid. 300mm for the Origin super-wide 233mm board — no exceptions. Closer for high-load areas like pool surrounds and stair landings.
Ground-level timber frame (10 steps)
Standard install on prepared ground. Pads, bearers at 1.8m centres, joists at the spacing above, fascia, then boards. Detailed walk-through ships with every order.
Concrete or tiled surface (7 steps)
Adjustable pedestals lift the deck above the existing surface — no demolition, no concrete cutting. Perfect for outdoor entertaining areas and rooftop terraces.
Dirt ground (9 steps)
Galvanised stirrups + bearers raise the frame off the ground. Allows airflow underneath, prevents moisture damage. Stirrups come pre-coated.
Questions before you start?
Call the team on 0424 341 353 or email sales@ezydecking.com.au. We answer same-day.
For Origin Range buyers: register your 20-year domestic warranty within 90 days of install (10 years + 10 more when you register).