In most cases, two is the maximum. However, as high as nine may be possible, but you will need to get appropriate permission. Twistlocks will also be an essential accessory when ordering if you plan on stacking, as these are specifically designed to hold stacked containers together.
Please contact us if you need more details about container stacking. It’s a specialist area that needs to be approached with safety in mind.
Bonus question: if I stack containers, how do I get to the top one?
Great question! We rent stairs for this in many countries – please contact us for details.