Detect Windshield Stress Fractures in Freezing Weather

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Checklist Tasks

• Inspect windshield perimeter at dawn for cracks visible in the cold.
• Run a gloved finger along the inner edge to detect ridges from stress.
• Check for white haze at windshield base, indicating cold-related microfractures.
• Shine a flashlight at a shallow angle to spot hidden stress lines.
• Examine around wiper mounts for spiderweb cracks from frozen arms.
• Look for chips near defroster vents that could turn into cracks after heating.
• Tap gently with a pen cap on suspect spots to hear dull thuds signaling internal cracks.
• Inspect the black frit band for bubbling or peeling, which may let in moisture.
• Check for uneven frost melt after defrosting, which can reveal stressed areas.
• Review lower corners for separation from the frame after clearing ice.
• Assess interior for condensation trails along cracks, showing possible microleaks.
• Photograph suspicious marks and compare weekly to track changes during freezes.