What actually survives salt air, sand, and rainy season — and what fails within a year.
Guanacaste's coastline is gorgeous and brutal on hardware in equal measure. Salt-laden air, intense UV, and a five-month rainy season conspire to corrode, seize, and warp anything not built for the job. We see it constantly — locks that would last decades in a dry inland city fail within twelve months in beach towns like Tamarindo or Flamingo.
The cheap deadbolts sold at most hardware stores are steel with a thin brass or chrome plating. That plating is cosmetic, not protective — once it scratches or wears, the steel underneath rusts fast in a humid coastal climate. We replace failed locks like this every week in properties around Playa del Coco and Nosara.
Even good hardware needs occasional attention here. A light silicone-based lubricant (not WD-40, which attracts dust and grit) every few months keeps pins and cylinders moving freely. We see this issue often in inland towns too — Liberia, Santa Cruz, and Nicoya get less direct salt exposure, but humidity and dust still take a toll over time.
If you manage a property anywhere on the coast, budget for quality hardware up front. A solid-brass deadbolt or a coastal-rated smart lock costs more initially but saves you multiple service calls and frustrated guests later. We're happy to recommend specific brands and models suited to your exact location when we come out for an installation or upgrade.