You can use a home kit for about if you act before dirt enters the crack . Best Way To Fix a Cracked Windshield - EASY DIY

If the crack is longer than 6 inches , deep (through both layers of glass), or in the driver's direct line of sight . 🛠️ Repair Options 1. DIY Repair Kits (Best for minor chips)

Windshields are made of —two layers of glass with a thin layer of polyvinyl butyral (PVB) plastic sandwiched in between. The outer layer takes the impact, while the inner layer and the PVB hold the shards together. A spider crack typically affects only the outer layer, but if left untreated, the legs of the crack can propagate through the PVB and into the inner layer, compromising structural integrity.

Generally, if the entire "web" can be covered by a quarter , it is repairable. If the radiating legs extend further than a few inches, the structural integrity of the glass is compromised.

Because these "legs" of the crack are points of high tension, spider cracks are notorious for spreading quickly due to temperature changes, road vibrations, or even hitting a speed bump. 2. The "Rule of Thumb" for Repairs

If your spider crack is smaller than a coin and isn't blocking your view, Cover the crack with a small piece of clear tape (to keep out dirt and moisture) and head to a glass shop or grab a repair kit immediately.

You might be tempted to leave the spider crack alone. Don’t. A small, fixable spider crack becomes an unfixable crack very quickly due to:

A clear, curable resin is injected into the "legs" of the spider crack.

Typically if the damage is smaller than a quarter (about 1 inch) .