I'm involved with a homeowners' association that was in the process of resurfacing their community pool with marcite plaster when it was suggested that using an aggregate material instead of plaster would last longer and be less maintenance. I've looked at forums and seen pros and cons about the longevity of aggregate, but so far I haven't seen anything about lower maintenance. In fact, I've seen some things that suggest maintenance of an aggregate could be higher, because algae and/or mold is more likely to form on an uneven surface (such as that of an aggregate) than on a smoother one (such as that of a plastered pool).
Can anyone give me some feedback on the general benefit of aggregate vs. plaster? Also, feedback about specific aggregate materials would help. So far, the recommendations to the association for aggregate have been: Pebble-Tec, Pebble-Sheen, Diamond Brite, Crystal Crete, Hydrozo (marble-like finish), and StoneScape.
Thanks for your help,