The Attic Tent has an insulating value of R-3.2. It is a specially engineered, patented insulator designed to create an air transfer barrier between your attic and living areas. It is a practical and economical solution to a problem that has existed since homes were first built with overhead attic entries. That problem is wasted energy through and around the attic door and stairs. It insulates folding attic stairs, knee wall doors, and attic scuttle holes.