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Instructions On How To Join Up Your Containers On Site
What Are Joined Up Containers?
One of our most popular conversion projects is to
join up two or more shipping containers together to form wider, or longer, spaces. These conversions have become more popular as shipping containers are more commonly used instead of traditional building materials. Although containers can be limited in terms of width and length, in joining up containers, we are able to offer wider or longer spaces whilst keeping the industrial feel and cost effective nature of upcycling an existing product.
How to join on site
When your joined up units arrive, we want to make sure you're able to join the units easily and securely, so we've written up our top tips. When the containers arrive on site, make sure they're perfectly level. This will prevent the containers from "racking out", which is where the containers twist slightly leaving it difficult to open and close the doors.
- When your containers arrive remove all the visqueen plastic and screws to show the interior of the units.
- The haulier is to butt the containers up on solid, level ground as close together as possible so the four corners are touching top and bottom.
- Fill any exposed gaps on the exterior with the expanding foam provided
- Place the white PVC capping provided over the protruding welded steel rail at the top of the units.
- Heat and lay the flash band that will also be provided along the edges of the PVC Capping and down the sides of the units so no water can get in.
- Paint over the flashband in the matching paint that comes with the materials provided.
- Screw the floor tread plates across the interior joins of the units.
The Kit
Customers will be provided with a simple, yet effective, joining kit:
- PVC capping
- Tin of matching paint
- Tread-plate
- Expanding foam
- Flashbanding
If You Have Any Questions
If you need further clarification or assistance, please
give us a call, and a member of our team will be happy to guide you through the process to get your joined up containers up and running as quickly as possible.
Testimonials
As a long established and reputable shipping container company, we want to instil confidence in our customers that we can deliver on our promises, and provide high quality products and service.
But don't just take our word for it, see for yourself what our past and present clients have to say about Containers Direct.
"Whole process extremely good, Hannah was very helpful and gave rapid responses. Dave the lorry delivery man was really excellent, extremely helpful."
Mark Nixon
10th December 2025
order - a 4m Flat Pack Store
"Our delivery was great and a big thank you to the wonderful delivery driver who was excellent at getting the lorry onto site and delivering the container quickly, efficiently and with a sense of humour! We will be needing another smaller container shortly and will be back in touch with you."
West Byfleet Infant School
28th November 2025
order - a New 'Once-Used' 40ft Container
"The purchase of the flat pack container was very easy from start to delivery."
Tom Passmore
27th Novemeber 2025
order - a 3m Flat Pack Store Container
"From start to finish Neil was excellent; his advice and patience were first class, returning all calls and contacting us when promised. This resulted in us getting exactly what we required, even down to cutting the lead time to suit our schedule. Many thanks to Neil and all the other staff members we dealt with, who were polite and helpful at all times."
A J Roofing Limited
20th November 2025
order - a Used 10ft Container
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Committed to Quality
We are ISOQAR Approved and certified to ISO 9001:2015 Quality Management Systems, demonstrating our commitment to excellence. We are also members of MakeUK, who champion British manufacturing, and the Container Self Storage and Traders Association (CSTA), representing global operators and innovators. In addition, we are registered members of JOSCAR, the Joint Supply Chain Accreditation Register.
