Shipping containers are built to take a beating, but a few simple habits can help keep yours easier to use and in better condition for years to come.
Routine maintenance is the owner's responsibility and may be required to maintain warranty coverage.
Containers can settle over time, especially on softer ground. If one corner drops, the container can twist slightly and the cargo doors may become harder to open or close. Check that the container remains properly supported and reasonably level, and re-level it if needed.
A container carries its weight at the four corner castings, not along the middle of the rails. Firm, level support under those four corners — pavers, blocks, or a prepared pad — is what keeps the frame square and the doors working.
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Cargo doors are heavy, mechanical components. A little routine lubrication can make a big difference. Periodically lubricate door hinges, locking-bar pivot points, handles, and moving hardware. If the doors suddenly become difficult to operate, check the container level before assuming the hardware is the problem.
Condensation comes from moisture and temperature changes inside the container, not necessarily from a leak. Start by keeping wet or damp items out of the container whenever possible and leave room for air to circulate around stored items.
Leaving a little space along the walls and above the load helps, too — air that can move is far less likely to give up its moisture on the steel when the temperature swings.
Used containers are expected to show cosmetic wear, including scratches, dents, fading, and surface rust. Periodically walk around the container and look for areas where paint has been damaged or corrosion is becoming more significant. Surface rust is not unusual on a used container. What matters is catching deeper corrosion, thinning metal, or holes before they become larger problems.
Rinsing dirt, tree debris and loose surface rust off the exterior with a hose, a brush and a mild cleaner goes a long way. Touching up bare or damaged paint helps keep those spots from thinning further. For deeper corrosion or larger dents, have it looked at rather than painted over.
Ask About Container Painting →Leaves, branches, dirt, standing water, snow, and other debris can trap moisture against the roof. Occasionally inspect the top of the container — especially after storms or seasonal weather — and clear debris or standing water if it can be done safely.
Keep heavy items off the roof as well. A container is built to carry weight through its four corner posts, not across the roof panels.
Warranty note: leaving leaves, snow, standing water, or debris on the roof may void warranty coverage.
The rubber seals around the cargo doors help keep wind and rain out. Periodically check for tears, cracking, missing sections, or seals pulling away from the door.
If your container has added windows or personnel doors, look over the caulk and weather stripping around those openings about once a year and replace it when it cracks, peels or pulls loose.
If your container has been modified with HVAC, electrical, plumbing, windows, doors, vents, or other systems, those components should be maintained like the same systems in any other structure. If something looks damaged or you are unsure about an electrical, plumbing, or structural issue, have the appropriate professional inspect it.
Practically, that means changing A/C filters on the manufacturer's schedule, checking drain lines after any settling, and looking over electrical connections for damage or looseness — with a licensed electrician for anything beyond a visual check.
Run through this a few times a year, and after big storms. Print it and keep it with the keys.
Print This ChecklistA slightly longer look, worth putting on the calendar.
Basic maintenance is part of responsible container ownership. Failing to perform routine maintenance — including allowing leaves, debris, standing water, snow, or similar buildup to remain on the roof or exterior surfaces — may void warranty coverage.
If you are not sure whether something counts as normal wear or a real problem, send us a photo. We would rather look at it early.
Have a question about maintenance, a repair, or an upgrade? Send us a photo or give us a call and we'll help point you in the right direction.
Run through this a few times a year, and after big storms. Keep it with the keys.
Routine maintenance is the owner's responsibility. Leaving leaves, snow, standing water, or debris on the roof may void warranty coverage.