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About Container Stacking

Modern construction sites are often small, and therefore it is necessary to maximise every bit of space that you have for your site accommodation units by container stacking. Willbox understand this, and that is why we build our units so that they can be double stacked to optimise ground space, and fully utilise the useable area on site.

What units can be stacked?

Willbox have based the majority of our site cabins on the 20’ x 8’ ISO Shipping container. Using shipping container conversions for our site accommodation units means that they are perfect for container stacking as they have an ISO container frame, and ISO corner casts to easily and securely lock the containers together.

Is it safe to stack?

Stacked units are approved on all major construction sites, and many of the main contractors will stack their own units too. We consider our containers and cabins to be the most secure as we use container conversions to ensure the units sit flush on one another, and are therefore completely safe.

How do the staircases work?

Willbox use a 13 tread steel staircase which has a landing platform and steel legs that meet the floor. The landing platform has railings all the way around the sides, and down the steps, and it is connected to the base of the stacked cabin. If you would like to see examples of our double stacked cabins, please click here.

How long does it take to stack?

Depending on the space to manoeuvre on site, it should take under 1 hour to fully stack the units and assemble the staircase. Our drivers are fully trained to operate the Hiab crane vehicle (required for loading and off-loading the cabins) and they have many years’ experience stacking cabins on site. Our drivers will not leave the site until the stack is safely secured, and the customer is happy with the set-up.

For more information on our site accommodation units, and how we stack our cabins, please don’t hesitate to contact our sales team on 0800 023 5060 or

You cannot beat the service or the people I have dealt with at Willbox. If everyone could be as customer focused as you, life would be so much easier! Jonathan Walcroft MDL Marinas
From initial enquiry to final delivery, the service we received from Willbox was first class. We would recommend them to anybody. Owner CC Moore

Willbox is rated 4.87 stars by based on 174 merchant reviews

4.87 / 5 Rating
174 Reviews
Had a shipping contain for about a year. Delivery and pick up were easy - even in a tight space !!
The communicarion with Matt, Holly and the delivery driver of the haulage company was fantastic. We had an awkward delivery due to our location, but Holly arranged a site meeting with the delivery driver who confirmed it would be ok with an early morning Delivery! Would certainly recommend you.
Once all the paper work was done very quick and effective service in dropping the container off will use again