Credit: Getty ImagesWhen a pipe bursts, we leap into action to minimize water damage and mold. We don’t always do the same for slow drips and leaks. A small spot on the ceiling doesn’t seem that serious until it starts to grow. A bedroom smells musty after every rain, but the odor dissipates when skies turn blue. Other times, we simply don’t notice moisture under a cabinet or in a corner of the basement.When water damage is hidden behind walls o…