Frequently Asked Questions

What is pipe freezing?
Pipe freezing is a safe and effective method of isolating a live pipework system without draining the entire network. By using liquid nitrogen, a temporary ice plug is created inside the pipe, allowing maintenance, repairs, valve replacements, or modifications to be carried out while minimising downtime.

What types of pipework can be frozen?
Yorkshire Pipe Freezing can carry out pipe freezing on a wide range of commercial and industrial pipework systems including heating, chilled water, condenser water, low temperature hot water (LTHW), and process systems. We work on pipe sizes from 1/2" to 8".

Is pipe freezing safe?
Yes. When carried out correctly by trained specialists, pipe freezing is a proven and safe method of live pipe isolation that has been used throughout the commercial and industrial sectors for decades. All works are completed using professional equipment and safe working procedures.

Where do you provide pipe freezing services?
We are based in Sheffield and provide pipe freezing services across Yorkshire including Leeds, York, Doncaster, Barnsley, Rotherham and surrounding areas. We also offer nationwide UK coverage for commercial and industrial projects.

What are the benefits of pipe freezing?
Pipe freezing avoids the need for full system drain downs, helping reduce downtime, prevent disruption, and save both time and money. It is commonly used where continuous operation of heating or cooling systems is critical.

Do you offer emergency pipe freezing call-outs?
Yes. Yorkshire Pipe Freezing provides emergency pipe freezing and live pipe isolation services for commercial and industrial systems where urgent repairs or isolation works are required.

Can you isolate live pipework without shutting the system down?
Yes. Pipe freezing creates a temporary isolation point within the live pipe, allowing engineers to safely carry out works without draining or shutting down the full system.

What industries use pipe freezing services?
Pipe freezing is commonly used across commercial buildings, industrial facilities, hospitals, schools, offices, plant rooms, manufacturing sites, and other critical infrastructure environments.

What is line stopping?
Line stopping is a specialist live pipework isolation method used to temporarily isolate sections of pipe while systems remain operational. It is often used for maintenance, repairs, upgrades, or modifications where shutdowns are not practical.

How quickly can you attend a pipe freezing job?
Response times depend on location and project requirements, but we aim to respond quickly to both planned and emergency pipe freezing works across Sheffield, Yorkshire and the wider UK.

Why choose Yorkshire Pipe Freezing?
Yorkshire Pipe Freezing provides specialist live pipe isolation services backed by over a decade of commercial pipework experience. Based in Sheffield, we offer a straight-talking, reliable approach with a strong focus on safety, professionalism and minimal disruption to critical systems.

Do you work on commercial and industrial projects only?
Yes. Yorkshire Pipe Freezing specialises in commercial and industrial pipe freezing, line stopping, and live pipe isolation services.

Do pipes burst during pipe freezing?
No — when pipe freezing is carried out correctly by experienced specialists, the risk of pipe damage is extremely low. Pipes typically burst when water freezes unintentionally inside a completely trapped section of pipework. As water turns to ice, its volume increases by approximately 9%. Because water cannot be compressed, this expansion creates extremely high hydraulic pressure within the pipe, which can eventually cause the pipework to crack or rupture.

At Yorkshire Pipe Freezing, every freeze is carefully planned to prevent this from happening. Before any work begins, we assess the system design, pipe material, operating pressure, temperature, and most importantly the available expansion path within the system. By allowing controlled expansion and using professional liquid nitrogen freezing equipment, we safely create a temporary ice plug without dangerous pressure build-up. The freeze is continuously monitored throughout the operation to ensure the pipework remains protected and the system can be isolated safely and efficiently.