Temperature control is only as good as the weakest point in your cold chain, that is why ensuring you have insulated solutions is vital. It's a straightforward principle, but it's one that catches out a surprising number of operations. You can invest heavily in your refrigeration system, maintain your HVAC to the letter, and still lose significant energy through poorly specified doors and uninsulated access points.

Kenfield's insulated products range exists to close those gaps. Built in Birmingham, made to order, and backed by over 40 years of experience in cold chain and food retail environments, our insulated solutions are specified by some of the biggest names in UK food retail and logistics. Here's what's in the range and why it performs.

 

What's in the Kenfield Insulated Products Range?

There are two main products in this category, each addressing a different part of the temperature control challenge. They're not interchangeable. Knowing which one fits your situation is the starting point for getting the specification right.

The K750 Energy Door: The Insulated Flip Flap Door Built for High Traffic

The K750 is our flagship cold room door and, frankly, the product we're most known for. It's a patented, award-winning flip flap door with over 35,000 installations across UK, European and American supermarkets. That's not a figure we use loosely. Major retailers including Tesco, Sainsbury's, Asda, Aldi, Morrisons and Iceland have the K750 fitted in their cold room access points.

What makes it the right choice for high-traffic cold room doors is the combination of insulated construction and flexible, self-returning panels. Staff can pass through quickly without manually opening and closing the door, which removes a large part of the warm air ingress problem at busy access points. The panels return to the closed position automatically, so the door is never left open between uses.

Key features:

  • Patented and award-winning design

  • Manufactured from heavy-duty PVC or polyurethane material

  • No external frame

  • No finger trap

  • Hinge guard included

  • Lightweight and staff-friendly

  • Available in single and double configurations

  • Reduces damage to cold rooms compared with traditional door types

  • Easy installation using the optional bracket

One honest note: the K750 performs best as part of a well-maintained cold room system. It will improve thermal efficiency considerably, but if your cold room has underlying refrigeration faults or existing icing problems, address those alongside the door specification. The door is not a substitute for a properly functioning refrigeration system.

The K2 Insulated Strip Door Curtain: Flexible Cold Room Curtains With Real Thermal Performance

The K2 is our insulated strip door curtain, and it's a different product for a different application. Where the K750 is built for primary, high-traffic access points, the K2 is the better fit for pedestrian doorways, lighter-traffic areas, secondary access points, and situations where a full rigid door isn't the practical solution.

The key distinction between the K2 and a standard clear PVC strip curtain is the insulation layer. The K2 is constructed from heavy-duty PVC with lightweight fibre insulation between the outer skins. That additional thermal barrier makes a genuine difference to cold air retention compared with single-layer PVC cold room curtains. It's not just a curtain with a different name.

Key features:

  • Available in sizes up to 3.5m high

  • Triple-layer insulated construction: PVC outer skin, thermal insulation core, PVC inner skin

  • Welded seams for durability

  • Integrated vision panel so staff can see through before pushing through

  • No finger trap

  • Choice of colour, with sign-writing available to order

  • Sliding track option available

  • No external frame

  • Lower section can be trimmed to fit exact opening height

  • Top-mounted fitting

  • Continuous rounded edge on strips for staff friendly use

It's used in walk-in cold rooms, freezers and refrigerated vehicles. It's also commonly fitted as a secondary thermal barrier behind a primary cold room door, adding another layer of insulation at a relatively low cost. For pedestrian access points where a rigid door would be impractical, it's often the most sensible solution.

 

What Makes Kenfield Insulated Products Worth Specifying?

There are plenty of door and insulation suppliers. Here's what we think separates a well-specified Kenfield product from a cheaper alternative.

Everything Is Made to Your Specification

None of our insulated products are off-the-shelf in the sense of one-size-fits-all. Every order is made to your exact dimensions and requirements. Cold room openings vary. Traffic volumes vary. Temperature ranges vary. Our configurator and sales team exist to work through those variables with you and produce the right product for your facility, not the nearest approximation.

UK Manufacturing at Our Birmingham Facility

All our products are manufactured in the UK at our Kings Norton production facility. That means quality control throughout the process is ours to manage, turnaround times are not subject to international shipping delays, and technical questions go to a team that built the product.

ISO 9001 and ISO 14001 Accreditations

Our quality management and environmental management processes are independently certified. ISO 9001 means our manufacturing processes meet a consistent, audited standard. ISO 14001 reflects our commitment to reducing environmental impact across our operations. For buyers with sustainability reporting requirements, that accreditation matters.

Over 40 Years of Industry Experience

We've been manufacturing specialist door and insulation products since 1983. That's a long time to accumulate knowledge about what works, what doesn't, and what cold chain operators actually need from a supplier. Our sales team draws on that knowledge when helping you specify the right product. You won't be sold something that isn't right for your application.

Which Insulated Product Do You Need?

Here's a straightforward guide:

If you're specifying insulated cold room doors for high-traffic access points in a supermarket, cold storage facility, food production plant or distribution centre, the K750 Energy Door is almost certainly the right starting point.

If you need insulated cold room curtains for pedestrian access, lighter-traffic openings, refrigerated vehicles, or secondary thermal separation behind a primary door, look at the K2 Insulated Strip Door Curtain.

If you're not certain, give us a call. We'll ask the right questions.

If you'd like to discuss your requirements or request a specification, our team is here to help. Call us on +44 (0)121 451 3051, visit kenfield.com/products/insulated-products.html, or use our contact form at kenfield.com and we'll get back to you.

We've been trusted cold chain partners since 1983. Get in touch and we'll help you find the right solution for your facility.