Case Study:

1963 Vanwide Railway Wagon

Main Contractor


Project Type

Railway Wagon Conversion

Project Value

Railway wagon

The Project

Simon bought a 1963 Vanwide railway goods wagon with plans to turn it into a garden room for himself and his family.

To get the wagon to a usable state, a full strip out was required, leaving only the metal casing of the original wagon remaining. Looking to insulate the 2m x 5m roof, careful consideration had to be given to retaining the original look of the carriage.

The Problem

Once the wagon was stripped back, there wasn’t much metal remaining for the roof, only six thin metal trusses were left.

Simon knew he wanted to finish the roof to a high standard whilst ensuring that it was well insulated. Due to the shape of the wagon, insulation was needed that not only performed well but was fully flexible to fit the arched roof. It was also important that the insulation had a shallow profile to fit into the narrow space.

How We Helped

After researching different products, Simon decided to use SuperFOIL SF19BB on the roof of his wagon, topped with traditional corrugated steel.

SuperFOIL SF19BB is a multifoil insulation, with a built-in breather membrane and purpose-made overlap and tape seal. At only 40mm thick, with an R-value of 2.22 when used in a roof, it is a great value, high-performing insulation. It is a fully flexible product, which also acts as a radiant barrier to help keep your project warm in the winter and cool in the summer.

Simon stated “ I now have a super roof solution that will outlast the original plywood and felt roof provided by British Railways. SuperFOIL SF19BB was easy to lay, easy to cut around and easy to handle. I chose SuperFOIL because of the quality of the product and the fact it is fully flexible, meaning it was perfect for a curved roof.

We help 1000's of customers every year

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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