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The 3 Types of Glass Cracks and How to Prevent Them from Spreading

Glass can crack for any number of reasons. How it cracks and how serious that crack is depends on the type of glass it is. In commercial and residential glass manufacturing, there are two types of glass that are more common than others: Borosilicate and Soda-lime silicate.

Borosilicate is used for industrial equipment, kitchen glassware, exterior lighting, and other heavy-duty needs. On the other hand, soda-lime silicate is used on lamp envelopes, windows, and food and beverage containers. Read on to learn more about the two types of glass, the three types of cracks, and what you should do about them.

1. Impact cracks

An impact crack is caused by something hitting the window and making immediate contact. This could be a rock, a ball thrown at the window, a bird hitting the window, etc. You can tell this kind of crack by the center point of contact, with lines that then extend around the circumference.

2. Stress cracks

In most cases, a stress crack will start out small and often near the edge of the window. As time goes on, it will slowly spread across the entire pane of glass. This type of glass crack is generally caused by temperatures that change quickly. Think of it like this: if you dropped an ice cube into a hot pan, what would happen? It would crack – just like a cold window will if exposed to heating elements. Stress cracks can also be the result of closing a door or window quickly.

3. Pressure cracks

Pressure cracks are one of the least common types of cracks that windows can experience. They’re mostly found in double-paned windows or insulated glass. They’re usually caused by significant temperature changes or windows incorrectly installed. They are generally curved and do require new windows.

How to prevent glass cracks from spreading

Most cracks won’t immediately spread but over time it can become dangerous. We suggest you contact Charles Window to have your glass replaced. In the meantime, placing a strip of masking tape down each side of the crack can slow down the crack. Superglue is another short-term fix that can help for a while, but be sure to clean the glass with acetone first.

The safest and most cost-effective option when you see cracked glass is to have it repaired. Don’t put your home or your family at risk. Contact Charles Window today.