Here is a pool are in Vandalia that has installed our 2 1/2” thick play tile to yield them a 7 foot fall rating.
Even though there diving boards were 5 feet off the ground, the park & recreational department didn't want to take any chances of injuries onto the surfacing below.
As a result we have increase the drop by the height of the railing to EXCEED the safety of both children and adults that use these diving boards.
Pigmented Blue was selected for this area.