Check for a Smooth, Impact-Free Crack: Stress cracks usually appear as clean, straight lines with no visible impact point from debris or rocks.

 Look for Edge-Originating Cracks: Most stress cracks start from the windshield’s edges and gradually spread across the glass.

Sudden Temperature Changes: If your windshield cracked after using hot water or defrosting in extreme cold, it’s likely a stress crack.

Windshield Age & Weakness: Older windshields with small chips or weak spots are more prone to stress cracks, even with slight pressure.

No Sound on Impact: Unlike impact cracks, stress cracks form silently—no loud noise or sudden breakage occurs.