A method of preventing liquid from entering a partially opened window or door (e.g., during a rain storm) comprises redirecting an airflow containing a liquid, through a window or door screen, using a water impermeable barrier to allow the passage of fresh air. A portion of the liquid is deflected by the barrier. The method also comprises receiving, via an upper passageway defined between the barrier and the window, the airflow, directing the airflow from the passageway to the opening, reducing an additional portion of the liquid in the airflow in response to the directing of the airflow to the opening. The barrier can be coupled to or integrated into the screen material, and the screen can have stripes or other visual indicators as a safety factor to indicate the presence of the screen.