Just a quick question. I have a 50 yr old poured concrete pool that is basically painted over the concrete. I'm planning on having the waterline tile and coping replaced this year. I was planning on having the pool plastered with quartz next year once the budget allows. Will waiting till next year (i.e. using the pool this year after the tile and coping is replaced) to do the plastering have any adverse affect on the newly installed tile that I am planning on having done this year?