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Vacuum-Insulated Panels (VIPs) offer very effective insulation (achieving an R-value of 50) within a very slim profile. That profile makes them useful on roofs where adding bulk can be expensive.
Researchers found that VIPs were robust if carefully installed. VIPs and R-50 insulation can offer favorable payback in one-story buildings in regions with extreme climates and high utility costs. View full-size infographic. [PDF - 234 KB]
Reference above to any specific commercial product, process or service does not constitute or imply its endorsement, recommendation or favoring by the United States Government or any agency thereof.