Inexpensive ideas to extend the height of my fence cinderblock wall outdoors
Install 1/2&quot; or  3/4 inch EMT tubing by drilling a 5/8&quot; or 1 inch hole on top of the wall. Conduit cost under $4 and under $6 respectively for a 10 foot length.
the 3/4 inch can be spaced further than the 1/2&quot;. You could probably getaway with cutting each length in half (or 3rds) so as to get additional posts. Sink them 8-10 inches.
Attach the shade cloth with self tapping pan head screws.
Be aware of wall and fence maximum height codes in your municipality.