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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

We found Willbox gave a first class service at competitive rates, coupled with the friendly approach by their staff- an all round winning combination. David Wills Garden Machinery Solutions
CPM has hired a variety of cabins and containers from Willbox and each time received the same friendly, efficient, and competitive service. Sara C CPM Ltd

Willbox is rated 4.86 stars by based on 187 merchant reviews

4.86 / 5 Rating
187 Reviews
However, I wont be using Willbox again with your refusal to open a credit account,
We found the service at Willbox to be exceptional. They were very helpful and quick to assist with any queries we had. Deliveries and collections were on time and a smooth process to arrange. Will most definitely use again in the future.
I've just had the container I've been renting for the past few years collected and want to pass on my experience with Willbox...from beginning to end the company has been a pleasure to deal with. The delivery was to a quite challenging rural location, but this was no problem to the operator, who manoeuvred the container into place with great expertise. Billing was straightforward and the monthly invoices were prompt and accounting-friendly. Communication was always friendly and enjoyable. The collection of the container was again, impressively done. If you're looking for the best in the field Willbox are it - look no further! Many thanks to all concerned.