We currently have a 3.5 yr old pool with a Hayward SWG and slate tiles & coping. Deterioration of the coping has gotten progressively worse over the last couple years despite using high quality sealants like Drytreat 40SK. The areas worst hit by the problem are in the areas where evaporation rates are high (shallow spots in spa & stairs). The tile at the waterline has faired better, but is now stating to flake too. Pool is ~27k gal, 135' perimeter cut out rectangle shape with a spa/spillover and DB surface, located in The Woodlands TX. Overall I like the salt system for it's ease of maintenance but the tile problem is to the point where it's killing my enjoyment.
From what I can tell I'm down to a couple of options:
1). Change out SWG to some type of chlorine feeder and replace sections where coping is in worst shape. 2). Replace coping/tile with something more durable.
Any ballpark ideas on what it costs to repair/replace coping & tile in the area and what type of chlorine delivery system would be worth looking at?