10×20 Shed (3x6m) in Australia: The Complete Colorbond Steel Guide
27 Oct Heavy Duty Sheds
Why pick a 10×20 shed in Australia?
A 10×20 shed (imperial) is roughly 3.05 m x 6.10 m, commonly marketed as a 3×6 m shed. It’s a sweet spot for:
- Garden workshop with bench space and racking
- Storage for bikes, kayaks, camping gear, and tools
- Small vehicle bay for a hatchback or two motorbikes
- Farm machinery storage for ride-ons and attachments
- Pool equipment and household overflow
Compared with a smaller garden shed, a 3×6 offers usable depth for roller doors, comfortable work zones, and better resale appeal.
What are the best shed materials for Perth’s climate?
Most premium Australian sheds are built from coated steel cladding on cold-formed steel frames. In Perth and broader WA, daily heat swings and coastal air mean coating choice matters.
Colorbond vs Zincalume — Which is better for WA conditions?
| Factor | Colorbond | Zincalume |
|---|---|---|
| Heat performance | Cooler options via Thermatech technology; lighter colours reflect heat well | Good reflectivity; metallic surface can reduce heat gain vs darker colours |
| Coastal corrosion resistance | Excellent in non-surf zones; check distance to breaking surf and wash-down access | Strong, but shows tea-staining near marine environments; maintenance is key |
| Aesthetics & planning | Large colour palette suits estate guidelines and heritage streetscapes | Industrial look; may not suit suburban design codes without screening |
| Warranty (typical) | Up to 20–25 years (check product and site category) | Comparable substrate warranty; confirm for marine exposure |
| Price | Higher upfront | Generally more affordable |
| Best for | Premium residential, coastal suburbs, strict design covenants | Rural sheds, budget builds, inland sites |
How much does a 10×20 shed cost in 2024–2025?
Prices vary by wind rating, cladding, door set, foundation, and installer availability.
- DIY shed kits (non-cyclonic N2–N3): approx. $4,200–$7,900 supply only
- Installed (regional WA/NSW/SA, non-cyclonic): typically $8,500–$14,000 including slab
- Cyclone-rated (C2–C3 North QLD): $10,500–$18,000+ depending on engineering