Case Study:

Loft Conversions Made Easy!

Main Contractor

Nick Winzor-Saile

Project Type

Loft Conversion

Project Value

Loft Staircase

The Project

Nick, an experienced loft converter in Norwich, needed a cost-effective solution for insulating his client’s loft conversion. Nick was subject to current building regulations which require a u-value of 0.18 in the roof.

The Problem

Nick was looking for an alternative issue to using a traditional form board, which would require at least 150mm to meet the required U-value. He was also looking for something that was easier, cleaner and simpler to install.

The search began…

How We Helped

Nick found SuperFOIL and got in touch with our technical advisors. He was given a solution of using SuperFOIL SF40 combined with a 47.5mm insulated plasterboard which met the required U-value of 0.18.
Our technical team dealt with the building inspector, providing all U-value calculations and condensation risk analysis. As well as this, the team were able to support Nick in finding a competitive price from his local supplier.

Nick said:

“the SF40 was installed in no time at all” he continued “it was SO much faster and easier than foam board. The plasterboard is already up, and we can get on with the rest of the job!”

By contacting SuperFOIL, Nick was confident he had the correct information and confidence of knowing he could achieve his goal and reduce his overall material cost for his customer.


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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