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 of a wall by more than 40 percent, regardless of cavity insulation. Aerogel, also referred to as "frozen smoke," has been difficult to adapt to most uses because of its fragility. The 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) of Thermablok Aerogel Insulation Strip™ (pat.pend.) added to each stud edge before hanging drywall or sheating is all that is needed to tackle thermal bridging problems and contribute towards maximum R value. Thanks to its hydrophobic properties, Thermablok will not age, mold, or mildew. Thermablok uses an amorphorus silica (distantly different from crystaline silica) aerogel insulating material which is environmentally safe and recyclable. Aerogel Thermoblok is heat and flame resistant Thermablok aerogel insulation is made up of a composite material consisting of aerogel embedded within a fiberglass type matrix.