Like any structural component of a home, windows require proper installation, upkeep, and, sometimes, a little TLC. A common issue with casement windows, those that are attached to their frames by hinges, is sash sag. This occurs when the bottom of a window begins to droop. An all-too-common conundrum, sash sag can be prevented as well as mitigated, and we’re here to provide tips for both instances.