4. . A critical step is BENDING. Every tile that is installed must
be bent in a downward arch before applying it to the roof deck.
Whatever position the tile is in when fastened to the roof deck, is
the position it will maintain. It is recommended that each member
of the installation crew be instructed on how to bend the tile to
insure that it lies flat when fastened to the roof deck. While grabbing
the top of the tile (textured side up) with the right hand and
the bottom edge of the tile with the left hand, bend the tile in a
downward motion until the tile maintains arch. The tiles must be
curved under when installing.