Put in a patio (19' x 33') 5 years ago. Every year rains wash away the 3/4" of sand bed along the outer edge of the patio. The base foundation of the patio is 8" to 12" of crushed limestone fines.
Did I use the wrong sand to set the pavers in?
Should I have installed a drainage pipe along the outer edge?
Unfortunately, the patio is perfectly level. I designed it to have a 2" pitch over the 19' width but during the build I set the outer retaining wall to the wrong height and never looked back. Do I need to start over and redo