Patent ID: 8713865

Claim:
A blast-resistant panel, comprising: only a single cured layer of a sprayed elongatable elastomeric material having only a single elongatable layer of a predetermined thickness in the range of about 100 mil to less than 250 mil and a percent elongation at break in a range of about 100-800%, the cured single elongatable layer of the elastomeric material having substantially entirely exposed front and back sides, and fastener elements for securing said single elongatable cured layer only to an interior side of an exterior wall of a building so that the cured, elongatable layer extends from at least two opposing edges of the interior side of the exterior wall of said building with a first of said opposing edges abutting a top of an outer perimeter of the interior side of the exterior wall of said building and a second of said opposing edges abutting a bottom of the outer perimeter of the interior side of the exterior wall of said building, said blast-resistant panel being configured to withstand an explosive blast having a peak incident overpressure of about 17 psi or more and a reflected pressure of about 51 psi or more measured at an exterior side of the exterior wall of said building without breaking.