I need to renovate my pool and am researching all related materials. The more I read the more questions I have.
It is not recommended that natural stone be used along the water line because of the pool chemicals. Currently, I have a small marble slab for the water that flows from the spa into the pool. It has roughened with time and, presumably, with exposure to pool chemicals. However, reading about pebble tec type finishes, they are made with natural stone. The sample board I have says they use marble. Wouldn't those finishes then roughen with time as well? Bottom line, why can natural stone be used for the entire surface and not for the waterline or a negative edge spa wall? Thank in advance for your help.