Utilizing aerogel insulation technology developed by NASA - the highest insulating material in existence - Thermablok® is a highly efficient, aerogel-based insulating material that breaks conductive "thermal bridging" and can increase the overall wall R-value by more than 40 percent. Aerogel, also referred to as "frozen smoke," has been difficult to adapt to most uses because of its fragility. The patented Thermablok material overcomes this by using a unique fiber to suspend a proprietary formula of aerogel so that it can be bent or compressed while still retaining its amazing insulation properties. Now available to the building industry, just one, 3/8-inch x 1½-inch (6.25mm x 38mm) strip of Thermablok added to each stud before hanging drywall is all that is needed to tackle thermal bridging and achieve maximum R-factor value. Thanks to its hydrophobic properties, Thermablok will not age, mold, or mildew. Thermablok is environmentally safe and recyclable.