Two Kinds of Housing, Two Kinds of Water Damage
In the newer construction going up around San Luis, the usual call is a supply line. A braided connector under a sink, a water heater that let go, a washing machine hose. The failure is sudden and the water is clean, but it spreads fast across a slab and gets into the bottom of the drywall before anyone notices it.
In the older housing closer to the border, we see more of the slow problems: aging galvanized supply lines, cast iron drains, and evaporative coolers that have been patched more than once. Those leaks run for weeks behind a wall or above a ceiling, and by the time there is a visible stain there is usually mold behind it.
Both are fixable. They need different work, and the second kind needs a moisture survey before anyone starts cutting into anything.
