Case Study:

Campervan Conversion

Main Contractor


Project Type

Campervan Conversion

Project Value

Campervan Roof Insulation

The Project

Emily and Dean bought a 15-seater, Ford Transit minibus with plans to convert it into a campervan suitable for themselves and their 3 dogs. They wanted to insulate the van fully beneath the planned internal wooden cladding finish on the walls and roof and insulate under the laminate planking flooring they would be laying. Due to variations in temperatures that vehicles can experience, it was important that the insulation chosen would not only keep them warm but help reflect the heat during the summer months.

They also wanted a product that could be used on the back of the curtains that would help to control the temperature in the van.

The Problem

It was important for the chosen insulation to take up minimal space in the van whilst still performing to high thermal standards. It was also vital for the insulation to be flexible due to the shape of the van and needing to be able to be easy to install on the walls, floor and ceilings of the van. All of these properties were required whilst working on a tight budget.

For the curtains, it was important that the product would be thin and flexible and would be possible to concertina in order to open and close the curtains without being too large.

How We Helped

After discussion with Emily & Dean, it was decided that SFUF would be the best insulation for the interior of the van that would meet all of their needs whilst still keeping to their tight budget.

Due to the fact SFUF is a mere 6mm thick and has a high thermal performance with a 0.08 R-value, it was the perfect solution. It would also provide a radiant barrier to help with the different temperatures during the summer and winter, ensuring their campervan would be the correct temperature whatever the season.

Due to its design, SFUF would be suitable for installing throughout the whole campervan conversion and would not require any additional battening to achieve its maximum thermal performance.

For the curtains, Emily decided to use SFTV1L. This was chosen due to the fact it is easy to sew onto the curtains, was extremely thin, and would move easily with the fabric to open and close the curtains. This would provide a radiant barrier when the curtains were closed which would help control the temperature of the van.

William Bown, Director of Boulder developments worked closely with Emily and Dean throughout the project. “It was a pleasure to work with Emily & Dean on this unique project to ensure their needs were met whilst still working within their tight budget.

Dean, the owner of the campervan, stated “ SuperFOIL SFUF was easy to work with. We needed no special tools and ended up cutting the product with a pair of blunt scissors after we lost our utility knife! We used the superior foil tape to hold the product into place, before placing a batten on top of the product (even though this wasn’t required for the product, it was needed to attach the cladding to). It was easy to install with two people and there were no irritating fibres that you can get with all other insulation.”

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Here are just a few of the comments we've received...

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Loft Conversion

Actually, I bought Superfoil for my small extension and I must say easy to install and it works, room is comfortable better than Kingspan. Now looking at installing an underfloor in my daughter's house. Thanks!

Duncan Walker

Conservatory Conversion

I'm really grateful for all the info you've provided, many thanks. To be honest I didn't think your stuff is as good as it clearly is, and we'll definitely be using it in the future. Can I ask a favour and ask you to calculate two more please?

Carl Bell

Self Build

In the past, I used SF19 for thermal insulation of the roof. I have the best experience. I'm thinking about insulating the house outside wall. As I want to be clear, I will definitely call. Many satisfied customers wish.

Jiri Milfait


We’re delighted with the thermal improvements after fitting Superfoil SF40. The system was clearly and helpfully specified, simple to install and immediately felt warmer, despite this also being the Winter of Beast from the East. It suits our 200 year old house, now heated with a modern, green air source heat pump.

Tim Clements

Senior Building Control Surveyor

Many thanks for all your assistance with this matter, you have been very helpful. The information you have provided has been very useful to one of our customers and I am now more familiar with this type of double fit of SuperFOIL as a suitable method of achieving compliance with The Building Regulations.

Donna Worrell

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