Choosing the Right Shed
SteelChief sheds come in three construction systems — Heavy Duty, Steel Frame and Timber — across three roof styles — Gable, Skillion and Flat. The questions below walk through how to pick the right combination for what you want to do.
What's the difference between Gable, Skillion and Flat roofs?
Three roof styles, each suited to different sites:
| Roof | Profile | Best for | Maximum size |
|---|---|---|---|
| Gable | Two sloping sides meeting at a central ridge | Larger backyards, workshops, when you want headroom and span | Up to 4.66m wide (steel); 3.04m (timber) |
| Skillion | Single slope (150mm fall front to back) | Sheds against a fence or wall, tight blocks | Maximum depth 2.35m |
| Flat | Very low profile | Tucking under verandahs, beside houses, very small spaces | Maximum depth 1.0m |
If your shed is going against an existing wall, a reverse skillion (sloping toward the front rather than the back) keeps water away from the wall's foundations.
Skillion and flat roofs have hard size limits - anything deeper than 2.26m has to be a gable. Flat roofs are not suitable for exposed locations and do not get gutters, so they are best used for very small storage in covered or sheltered spots.
What's the difference between Heavy Duty, Steel Frame and Timber sheds?
SteelChief sheds are built using one of three construction systems:
| System | Frame | Cladding options |
|---|---|---|
| Heavy Duty | No internal frame - wall panels are self-supporting via the cladding profile | Heavy duty deep rib (28mm profile) or corrugated (18mm profile) |
| Steel Frame | Galvanised 25 x 25mm RHS, fully MIG welded | Deep rib, corrugated, or horizontal corrugated (Horri Corri) |
| Timber | Treated pine bearers and timber wall panels | Treated pine or pre-primed weather boards |
Heavy Duty is the default for most sheds and the more economical choice. The deep rib profile is strong enough at 28mm to span the standard range without needing a frame.
Steel Frame is required for larger sheds (over 7.74m long, or wider than 3.89m on deep rib / 3.86m on corrugated), roller doors, the +600mm wall-height upgrade band, exposed sites, or if you want to fix shelves and lining boards directly to the inside walls. It is also a valid upgrade on any shed for extra strength or peace of mind.
Timber suits customers wanting a natural or rustic aesthetic, or in heritage and character settings where timber fits the streetscape. The pre-primed weather boards option requires painting by the customer within 2 months of installation.
Every shed across all three systems ships as pre-assembled wall and roof panels.
What does "Heavy Duty" actually mean?
"Heavy Duty" describes our deep rib profile specifically. It is a 28mm-deep rib profile - notably stronger than the 12 to 18mm rib heights commonly found on lighter-duty steel sheds. That profile strength is what lets the wall panels stand up without an internal frame across our standard range, including larger workshops.
We do not use the "Heavy Duty" label on our corrugated sheds - corrugated is just called corrugated.
What's Horri Corri / horizontal cladding?
Horri Corri is our shorthand for horizontal corrugated cladding - corrugated sheeting rotated 90° so the ribs run horizontally rather than vertically. It is a premium architectural product chosen for its modern look rather than for structural reasons.
Key things to know:
- Steel Frame is mandatory - the cladding cannot be self-supporting on its side.
- Corrugated only - no deep rib option in horizontal orientation.
- BaseSmart is not fitted on horizontal-clad sheds (different base detail).
- It has its own pricing - different from vertical-clad sheds.
Customers usually choose Horri Corri for design-led projects (front-of-property positions, modern houses, landscaped areas) rather than for storage in the back yard.
Are SteelChief sheds rated for high-wind areas?
SteelChief sheds are engineered to an N3 wind rating when installed on a concrete slab. N3 covers most of the metropolitan and regional Australia we service.
A couple of important points:
- The N3 rating applies to sheds installed onto a slab. A heavy duty shed star-picketed to the ground in a wind-protected site is not N3-rated.
- For exposed sites where wind is a real concern (open paddocks, hilltops, near waterways, coastal positions), steel frame on a concrete slab is the right combination.
- N4 engineering can be arranged for custom jobs. If your site needs the higher rating, talk to the sales team and we will quote the engineering and certification required.
If you are unsure what wind classification applies to your address, your local council holds the wind-classification map for your area.
Do you still make a Heritage range?
No - the Heritage range has been discontinued. Our current range is heavy duty deep rib, corrugated, steel frame variants of both, horizontal corrugated, and timber.
If you are after the look of a heritage shed, corrugated cladding gives you the classic traditional profile that customers most often associate with that aesthetic.
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