On Biscayne Bay, the mornings scent like salt and concrete dust. If you exercise architecture here long enough, you find out which materials brush off the ocean’s tantrums and which ones liquify right into costly regrets. As a Miami Designer, I’ve viewed lintel light beams flake like pastry under chloride assault, stainless steel railings tea-stain within a year, and “marine-grade” surfaces crack after the first typhoon period. I’ve also seen homes hold their line versus wind, spray, and warmth...