Insulating AI data centers: why ThermalJacs547® Fiberglass pipe insulation is the right choice for contractors

AI data centers are being built at a pace and scale that the construction industry has rarely seen. For mechanical insulation contractors working on these projects, the demands are significant: large pipe diameters, extensive distribution networks, tight schedules, and specifications that leave little room for error. Selecting the right pipe insulation product from the start has a direct impact on project efficiency, long-term system performance, and confidence in the integrity of the building.

Today, we’ll look at the thermal challenges specific to AI data center cooling systems and explore ThermalJacs547® Fiberglass Insulation as a solution.

AI data centers are not typical commercial buildings. The processors that run AI workloads, primarily high-performance GPUs and dedicated AI accelerators, generate considerably more heat per square foot than conventional server hardware. As AI demand increases, that heat load rises further, placing continuous pressure on the cooling infrastructure.

To manage this, facilities rely on large chilled water distribution systems. These networks circulate chilled water through the building via primary mains, secondary loops, and branch distribution lines, carrying heat away from the servers to chillers and cooling towers. The pipe sizes involved are often substantial, particularly on the primary distribution headers, and the system operates around the clock with no planned downtime.

Fun Fact:

Training a single large AI language model can consume as much electricity as dozens of average homes use in a full year. Most of that energy is released as heat that the cooling system must remove continuously to keep the facility operational.

Insulation challenges

For contractors, AI data center projects present a specific set of insulation challenges that need to be addressed at the specification and procurement stage:

• Large bore pipe diameters on primary distribution mains require insulation that is consistently fabricated and easy to handle and install at scale.
• Chilled water lines operating below ambient dew point are susceptible to surface condensation. A reliable, cleanable jacket finish is essential to prevent moisture-related issues after installation.
• The sheer volume of pipe to be insulated across a large facility means material costs and installation efficiency both carry significant weight in product selection.
• Facilities are often built to tight completion schedules, and any product inconsistency or quality issue on-site creates costly delays.
• Building owners and engineers expect insulation systems that will perform reliably over a long service life in a 24/7 operating environment

ThermalJacs547® Fiberglass pipe insulation

ThermalJacs547® Fiberglass Pipe Insulation is made from glass fibers bonded with a special high-temperature binder and fabricated to fit most standard and custom pipe dimensions. It is designed for application temperatures from 0°F to 850°F (-18°C to 454°C), covering the full range of piping found in data center mechanical systems, from chilled water distribution to hot utility lines elsewhere in the facility.

Each section is factory-applied with Premium WMP-50 ASJ Jacketing, a smooth, durable, and wrinkle-resistant polymer film exterior made of polycore facing that protects against vapor seeping through the facing and into the insulation. The WMP-50 jacket finish is cleanable, resists water staining, and does not support mold or mildew growth, making it suitable for both exposed and concealed installations.

Why ThermalJacs547® Fiberglass pipe insulation works for data center cooling pipe

Thermal performance across the full system

Data center mechanical systems are not limited to chilled water piping. The same facility will often include heating lines, domestic hot water, and other higher-temperature services alongside the cooling distribution network. ThermalJacs547® Fiberglass covers the full temperature range contractors are likely to encounter across all of those services, reducing the need to specify and manage multiple insulation products on a single project.

Condensation control on chilled water lines

Chilled water supply lines in AI data centers typically operate well below ambient dew point. Without adequate insulation, condensation forms on pipe surfaces, leading to moisture damage, corrosion, and ongoing maintenance issues. ThermalJacs547® Fiberglass, combined with its factory-applied WMP-50 jacket, provides a continuous thermal and moisture barrier that limits surface condensation and helps protect the integrity of the insulation system over time.

A finish built for professional installations

The WMP-50 jacket on ThermalJacs547® delivers a clean, smooth finish that holds its appearance in both exposed mechanical rooms and concealed above-ceiling installations. For contractors working in facilities where the mechanical spaces are subject to inspection and ongoing maintenance access, a cleanable, stain-resistant finish reduces the risk of callbacks and supports a professional end result.

Fabricated to fit and cost-effective at the project scale

AI data center projects involve significant quantities of pipe insulation, often across hundreds or thousands of linear feet of piping, including large bore applications. ThermalJacs547® is fabricated to fit a wide range of pipe sizes and is priced competitively for large-scale projects where material and installation costs are under close evaluation. Products ship in flat packs to reduce freight costs and improve handling efficiency, while the consistency of the factory-applied WMP-50 jacket helps reduce on-site finishing time and contributes to overall installation productivity.

Where ThermalJacs547® Fiberglass applies on a data center project

• Chilled water supply and return mains serving AI server halls and GPU clusters
• Primary and secondary cooling distribution headers throughout the facility
• Branch distribution lines serving coolant distribution units in liquid-cooled server deployments
• Mechanical room and plant room piping exposed to elevated ambient temperatures
• Hot utility piping, heating lines, and domestic hot water services within the same facility
• Both new construction and retrofit scopes where a consistent, professional insulation finish is required

If you are working on an AI data center project and want to discuss insulation specifications or product availability for ThermalJacs547® Fiberglass Pipe Insulation, our knowledgeable sales.

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