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]