Break-In and Vandalism
A break-in that involved breaking a window creates a security emergency. The broken glass opening is the same entry point the intruder used, and it must be secured before the property can be left unattended. CDW responds to break-in window damage throughout California and secures the opening with board-up immediately before completing glass replacement. If law enforcement has not yet responded, CDW advises calling 911 before any glass is disturbed so the scene can be documented.
Accidental Impact
Accidental glass breakage from a ball, a tool, an object falling against the glass, or a door slamming hard enough to break an adjacent pane requires the same board-up and replacement response as any other cause. A broken window is a broken window regardless of how it happened. CDW responds to accidental breakage calls throughout California with the same fast response as any other glass emergency.
California Wind Events and Debris
California's wind events, including Santa Ana winds in Southern California and the Diablo winds in Northern California, drive debris at speeds sufficient to break residential window glass. Branches, roof tiles, outdoor furniture, and smaller objects become projectiles in sustained high-wind conditions. CDW responds to wind-related window breakage calls throughout California during and after wind events.
Seismic Stress Cracking
California's seismic activity produces foundation and frame movement that can crack window glass through stress rather than impact. A seismic event that shifts a window frame produces compressive and tensile stress in the retained glass panel. A stress crack typically originates at the glass edge and propagates across the panel. CDW responds to earthquake-related glass breakage throughout California and assesses whether ongoing frame movement is present before recommending glass replacement.
Thermal Stress Cracking
A window panel that's partially shaded and partially in direct sun can develop a temperature differential across its surface that creates stress between the hotter and cooler portions of the glass. This thermal stress can crack the glass without any impact. Thermal stress cracks typically originate at the glass edge and travel across the panel in a curved line. In California's intense sun, thermal stress cracking is more common than in less sunny climates. CDW identifies thermal stress cracks and assesses the shading pattern before replacement to advise on whether the same conditions will crack the replacement panel.
Spontaneous Tempered Glass Failure
Tempered glass can fail spontaneously from a microscopic nickel sulfide inclusion inside the glass that expands from temperature cycling until it triggers the internal stress fracture pattern of the tempered glass. The result is sudden complete shattering without any external impact. California's significant temperature swings make spontaneous tempered glass failure more likely than in more temperate climates. CDW responds to spontaneous tempered glass failure calls throughout California.
Sports and Play Impact
A ball through a window is one of the most common accidental breakage calls CDW receives throughout California. Single-pane glass in standard residential windows breaks relatively easily from ball impact. CDW replaces sports-impact broken glass and can advise on more impact-resistant glass options for windows in locations where repeat incidents are likely.