The differences between these materials are fundamental. Cellular glass insulation is a rigid, lightweight closed-cell material composed of millions of completely sealed glass cells, each an insulating space. Cold-service aerogel blankets, in contrast, are aerogel-filled, flexible fibrous blankets that are laminated to a vapor retarder to protect against moisture.

For companies specifying insulation systems, product data sheets serve as crucial decision-making tools. "These sheets outline the properties of that product – thermal conductivity, compressive strength, permeability – with test methods listed right next to each property to show how the manufacturer got to that claim," Perryman noted.

The importance of these specifications became clear in the study's findings. While Foamglas specifications have remained consistent, published values for some aerogel products have seen significant changes. Water vapor sorption declarations for one aerogel product increased from less than 0.5% by weight in 2008 to 5% by weight in 2024.

Installation challenges also emerged as a key differentiator. The aerogel blankets exhibited degraded thermal performance due to particle loss during shipping, handling and installation. The dust released during installation creates additional workplace safety concerns, potentially requiring respirators and other personal protective equipment.

"Through handling and transport, aerogel insulation released particles which degraded its thermal performance," noted Perryman. Testing showed thermal conductivity increases of 7 to 8% after normal handling, potentially undermining system designs based on out-of-package values.

To verify these real-world performance differences, Owens Corning commissioned an independent third-party contractor to insulate the same pipe with both materials. The test maintained identical process conditions, including the same heat gain, process temperature and ambient temperature. The results showed Foamglas insulation could save approximately 70% in material costs and 25% in labor costs compared to the aerogel insulation.

Many LNG facilities face unique challenges due to their coastal locations, where structures are exposed to both salt water and high humidity levels. "Water is more thermally conductive than air," Perryman pointed out. "If insulation that's normally filled with air becomes water-logged, thermal performance suffers significantly."

The study highlighted crucial safety aspects that might not be immediately obvious to specifiers. While both materials may perform well in standard fire safety tests, Perryman emphasized a critical distinction: "Just like water, oils and liquid hydrocarbons can penetrate some insulation systems. If there's a leak and the insulation retains these fuels, a spark could create a major safety issue."

Quality control emerged as another key differentiator. Foamglas maintains a formal compliance program where every plant grade combination is tested to ASTM C552 standards at specified time intervals. This standard specification for cellular glass thermal insulation ensures consistent performance.

"It's critical to use the most current data sheets when designing these systems," Perryman stressed. "Properties can change through normal R&D and development, which is fine as long as you're working with up-to-date information."

The insulation industry is witnessing significant technological advancement, with smart insulation systems and enhanced thermal barriers transforming traditional approaches. However, the white paper serves as a reminder that in industrial applications, the best-performing material in the lab isn't always the most practical choice in the field. For engineers and facility managers facing insulation decisions, the message is clear: look beyond the initial thermal conductivity numbers and consider the complete installation picture, from shipping and handling through years of service in challenging environments.