Containers and flood risk on the Clarence — what steel can and cannot do
How a shipping container really behaves when water comes up: what watertight means, why an empty container floats, and what steel genuinely gives you on low ground.
Coffs Harbour is the biggest market on this stretch of coast and the one where people most often buy a container without ever seeing it. Here is what to work out first, in the order that actually matters.
Almost everybody starts by asking about 20ft versus 40ft. The grade decides more.
New, or single-trip. Built overseas, loaded once, shipped out. Clean, sealed, unmarked, no history. Right if it is going somewhere visible, if it is being converted, or if you want it to still look respectable in fifteen years.
Used, cargo-worthy. The workhorse and the majority of what we sell. Checked wind and watertight before it leaves the yard. It will carry surface rust, dents and somebody else's shipping line livery. Structurally sound and sealed against rain.
As-is. The cheap grade. Sold exactly as it stands and not sold as watertight — a patched repair, a soft spot in the floor, a seal that no longer seats. Perfectly reasonable for a dry-store shed on a farm or a site box for gear that does not mind weather. Wrong for anything you care about staying dry.
Work out which of those three the job needs before you ask about size, because it changes the price far more than the length does.
A 20ft gives you 33 cubic metres and about 13.8m² of floor. A 40ft gives you 67.7m³. The practical test is not volume, it is floor area with an aisle: take a metre off the length for room to work at the door end and a 20ft is storage on about 11m². Most people describing what they want to store are describing a 40ft.
The measurement that catches people is the door opening. A standard container is 2.39m inside and only 2.28m at the doorway. If a forklift mast, a boat, a tall tank or a stacked pallet has to go through, buy a high cube — 2.58m at the door — and stop thinking about it.
Coffs, Sawtell, Woolgoolga, Boambee — you are in salt air, and it matters less than people fear and more than sellers admit. It does not eat a sound container. What it does is find bare steel fast: a scrape from a forklift tine, a drilled hole left open, a chip where something was welded off. Untouched, that shows rust in a season instead of five years.
The fix costs almost nothing. Keep a tin of cold gal or enamel and touch up bare metal when you see it. Do that and a container here lasts as long as one anywhere.
Humidity is the bigger practical issue. A sealed steel box through a Coffs summer will sweat if you load damp gear and shut it up. Load dry, allow airflow where the contents will tolerate it, and think about vents if you are storing anything that minds moisture. Condensation does more damage on this coast than leaks do.
Delivery access on the Coffs Coast splits three ways. The industrial land at Coffs and the newer estates out towards Bonville and Sapphire are straightforward: wide, flat, room to swing. The older beachside streets — the Jetty, Park Beach, Sawtell — are the opposite: narrow frontages, established trees, low services, cars parked both sides. The third is the hinterland behind the highway, where the block is fine but the driveway is long, unsealed and cut into a slope.
Sand is the ground issue. It looks firm and gives way under a concentrated load, which matters most for a sidelifter placing a 40ft. Photograph the gateway, the approach and the spot, and send them with your enquiry — it settles the vehicle question before anyone quotes.
A container placed as temporary storage on a property is usually not a development matter, but that depends on your council, how long it stays and whether you are altering it. City of Coffs Harbour publishes guidance and it is worth ten minutes. If the plan is a permanent structure, anything habitable, or a conversion, assume you need to ask them before you buy rather than after.
The last point, and we are obviously not neutral about it. A great deal of container selling on this coast is a website and a mobile pointed at a depot several hundred kilometres away. The unit is described by someone who has not seen it, and the first proper inspection happens when it comes off the truck at your place.
Our yard is at 1a Reid St, South Grafton — a bit under an hour and a half up the highway from Coffs. You can stand in front of the actual container, open the doors, walk the floor and look for daylight rather than meeting it for the first time as it comes off the truck. Ring (02) 5616 9099 first so someone is there to open it up.
How a shipping container really behaves when water comes up: what watertight means, why an empty container floats, and what steel genuinely gives you on low ground.
What a tilt-tray, a sidelifter and a crane truck each need, how river silt and coastal sand behave under a loaded vehicle, and the three photos that settle it.
What each grade guarantees, what wind and watertight means as a test, why as-is is not sold watertight, and how to inspect a used container yourself.
One call, one delivered number, cartage included.
Or skip the form entirely.
Call (02) 5616 9099