Fortified roll-up barrier

A slat for a roll-up barrier, comprising:

• a core formed of a woven material configured to arrest a projectile, the core being about ½ inches to 3 inches thick;
• and
• a front covering formed of a second material different than the woven material and configured to splay the projectile.

A barrier, comprising:

• a plurality of slats hingedly connected, wherein each slat includes a central portion having a first material thickness, a top portion having a second thickness less than the first material thickness, and a bottom portion having a third thickness less than the first material thickness, wherein the top portion of each slat overlaps the bottom portion of an adjacent slat forming an overlapping region having the first material thickness when the barrier is in a closed configuration.

A roll-up barrier, comprising:

• a plurality of slats hingedly connected together and forming joints between adjacent slats, the roll-up barrier having a closed configuration in which the plurality of slats collectively form an upright panel and an open configuration in which the plurality of slats assume a rolled formation, wherein the joints are configured to arrest, in a closed configuration of the barrier, a projectile meeting the criteria of UL 752 Level 8.