Case Study: K.ustom Camper Conversions and Supasoft Recycled Polyester Insulation
Posted by Sarah, Celtic Sustainables on 17th Jun 2026
K.ustom Conversions creates bespoke campervans with comfort, practicality and quality at the heart of every unique build. A consistent part of that approach is the use of Celtic Sustainables Supasoft recycled polyester insulation, chosen to help each van feel more comfortable in day-to-day use while also supporting a more sustainable way of building.
Built with Sustainability in Mind
Every K.ustom Conversions campervan is different, designed around the customer’s layout, travel style and practical needs. Despite that individuality, one thing stays the same: each build uses Supasoft insulation. This material is made from recycled polyester fibres sourced from plastic bottles, giving waste material a valuable long-term use while helping reduce reliance on more irritating or less sustainable insulation options.
Why K.ustom Conversions Likes Supasoft
For K.ustom Conversions, Supasoft stands out for three clear reasons. First, it is recycled, which helps the planet by diverting plastic waste from landfill and turning it into a useful, durable product. Second, it is easy to handle and install, making it practical for the detailed spaces and curves found in campervan interiors. Third, the effect of the insulation can be felt once the van is in use, helping create a more comfortable interior environment for life on the road.
"It’s definitely a lot better than what’s on the market and what a lot of converters use. The 50mm thickness is ideal for the van's wall cavities. It’s easy to use and retains heat amazingly. You can notice the difference when you’re building a van, the second it’s in. Your own body heat seems to be retained and heats up the space." Kursh Shalton from K.ustom Bespoke Conversions.
Comfort You Can Feel
Insulation is one of the hidden details that can make a major difference in a campervan. By using Supasoft in every build, K.ustom Conversions adds a layer of thermal comfort that customers can notice in real-world conditions. Whether parked up on cooler evenings or trying to keep the space more balanced through changing weather, good insulation supports a better overall camping experience while complementing the premium finish of a bespoke conversion.
"We love the super soft insulation. It’s been all we have used since we found it a few years back." Kursh Shalton from K.ustom Bespoke Conversions
Conclusion
If you are considering a bespoke campervan, K.ustom Conversions is well worth a look for beautifully tailored builds that put comfort and material choice first. And if you are planning your own next project, Supasoft recycled polyester insulation is worth considering too whether for your home, camper, shed or garden office. It is a practical option that combines comfort, ease of installation and a more environmentally responsible approach.
Want to learn more about Thermafleece Supasoft Insulation? Be sure to check out our other articles for tips, advice, and project inspiration.
- Campervan insulation for campervan conversions & van lining
- 5 reasons to choose SupaSoft recycled plastic insulation
- Insulating a camper van using Thermafleece insulation FAQs
- How Natural Insulation benefits the Environment
- Eco Campervan Conversion – Insulating your Campervan
And remember, we sell Supasoft by the roll, making it easy to try just one or two rolls in a size that suits your project, or even opt for a thicker option for floors.
Affordable, simple to install, and made from the same recycled polyester fibres found in many duvets, Supasoft is a practical, sustainable insulation choice that’s easy to work with.
Why not give it a go on your next project?