We recommend purchasing stainless steel or galvanized L brackets at your local hardware store to install your privacy screen to a pre-existing concrete or wood surface. Screw one side of the bracket to your privacy screen post and the other side to the surface . We recommend doing this for all posts. Remember this screen is not designed to be used as a fence. It needs to be installed at a right angle and not in a straight line otherwise it will be vulnerable to wind damage.
This customer surface-mounted two ZP19014 Premium Privacy Screens on their concrete surface using L-brackets on the inside.