If your garage door won't close, you're not alone. For homeowners in Bristow, Gainesville, Haymarket, and across Northern Virginia, a door that stops halfway, reverses on its own, or refuses to move is one of the most common service calls we handle. Nearly 30% of all garage door malfunctions are sensor-related, and most can be resolved within the hour. Why a Garage Door Won't Close: Start Here Before diving into the 8 causes, take 30 seconds to observe what's happening. The b