Shock Control 2.0 is a flexible, self-adhesive, fiberglass reinforced sheet, pre-cut to cover the underside of a 23.5″ x 23.5″ (nom.) paver. The sheet is attached to the paver simply by peeling off the protective backing and pressing the sheet firmly onto the underside of a clean, dry paver, making sure to avoid any air bubbles. In cold conditions, directing hot air on the underside of the paver can improve adhesion.