Pool Skimmer vs Perimeter Overflow — When Each Makes Sense
Most AZ pools use skimmers. A handful use perimeter overflow. Here's the difference, the cost premium, and why some clients pay 3x for overflow.
Skimmer pools (standard)
Water sits 6" below coping. 1–2 skimmer boxes pull surface water into the filter. What 95% of AZ pools have. Cost-effective and reliable.
Perimeter overflow (negative edge)
Water fills to the top of the coping and sheets over every edge into a hidden gutter. Mirror-still surface. Dramatic visual. Glassy reflective at night. Adds $40K–$120K to a build.
Why overflow costs so much
Hidden surge tank (often 1,500+ gal underground). Constant-level system. Larger pump and finer level tolerances. Significantly more concrete work. Tile detail must be near-perfect — every imperfection shows.
When to choose overflow
Premium builds where the pool is THE design statement. Modern architecture where the mirror-water aesthetic matters. Lots with a view (overflow + vanishing edge into the view is unmatched). Not for kid-splash, lap-swim, or budget builds.
