This will be my first time posting after registering, so be gentle.
My pool is 32 years old, is 10 x 40', inground, originally with a plaster finish which has subsequently been painted.
The problem I need help with is the hairline cracks that are between the coping sections. Is there a clear sealant that can be applied to forestall grinding out the old grout and reapplying? I am not referring to any cracking between the coping and the tiles underneath.