09/08/2025
Are you ready for weather changing?
Weather causes windshield cracks primarily through rapid temperature changes, which create stress and cause the glass to expand and contract unevenly, leading to cracks, especially if there's already a chip. Cold weather makes existing damage worse, as freezing and thawing can expand moisture in a chip, while heavy rain and wind can exert pressure that worsens cracks. High heat can also weaken windshields, making them more susceptible to damage from other impacts.
Cold Weather Effects
Temperature Fluctuations:
Extreme swings from warm to cold (or vice versa) create thermal stress, which can expand small chips into large cracks.
*Freeze-Thaw Cycles:
Moisture seeping into a chip can freeze and expand, causing the damage to spread.
*Ice and Snow Buildup:
The added weight of snow and ice, along with wipers working against frozen layers, can put pressure on already weakened glass.
*Rapid Defrosting:
Using hot water to de-ice a windshield or blasting a high-heat defroster can shock the glass, creating stress cracks.
Hot Weather Effects
*High Heat and Sunlight:
Extended periods of direct sunlight can weaken windshield glass, making it more fragile and prone to cracks from minor impacts.
*Thermal Stress:
Similar to cold, rapid temperature changes can create stress. Cooling a scorching windshield with cold AC can have the same effect as heating a frozen windshield with hot water.
Other Weather Factors
*Heavy Rain and Wind:
Constant pressure from heavy rain or high winds can exacerbate existing damage.
*Windscreen Wipers:
Worn-out wipers used during heavy rain can put added pressure on fragile areas of the glass.
*Road Debris:
During bad weather, road salt and sand can be kicked up by vehicles, increasing the chances of new rock chips or pitting that can develop into cracks.
