Hot water will crack windshield Pouring hot water on your vehicle's windshield to melt the ice could actually crack or shatter the glass due to extreme temperature changes.

Crack your windows to exchange the humid interior air with the dry exterior air. De-ice all windows and windshields while the car is defogging or de-frosting, and don’t forget to wear gloves ...

Hot water will crack windshield Pouring hot water on your vehicle's windshield to melt the ice could actually crack or shatter the glass due to extreme temperature changes.

Ray: Second, the glass doesn't change temperature immediately. It's pretty thick. The heat has to work its way through. So it's not like taking a steaming-hot glass and thrusting it into ice water.

Glass can crack when its hit by really high temperatures (Image: Getty) SUBSCRIBE Invalid email. ... “Instead, opt for useful tools such as de-icer and an ice scraper to clean your windows.