I have a 30,000 gal in ground, blue plaster pool in North VA. Pool is about 20 yrs old, but we were told plaster is about 5 yrs old. Paver coping is intact as is water line tile and the joint between the coping and tile.
I count about 14 places in the pool walls and bottom where the plaster is cracked like you'd see on an egg. Calcium (or other white) deposits collect at some of these, and some have a hollow sound when tapped. Surrounding areas are not hollow. At least one piece of plaster approx 1" x 2" has popped off of one of these spots (and surface underneath is white). I just saw another spot that looks popped, but it's blue underneath--I can't get into the pool to inspect due to surgery.
1. Is there an acceptable underwater repair (except underwater epoxy injection) that doesn't require special equipment for areas where the plaster has popped off? If so, what is it?
2. If the plaster is cracked and hollow (thereby not adequately adhered), must I be losing water? Water line levels don't show this.
3. At what point (number of spots, square feet of area, etc) would it be prudent to replaster?
4. For built-up roofs, a popped blister = leak, but an air tight blister just needs watching (some people say pop and fix). How does this analogy fit pool plaster?
5. Any idea on how long my plaster has to live, doctor?