A broken windshield invokes an immediate question: can it be repaired, or is it time to change the whole windshield? The solution will be determined by key factors, such as the:

• Size
• Depth
• Position of the damage.

Some of these chips and cracks may be repaired in a few minutes. But others undermine the integrity of the glass and demand a permanent solution.

This guide will help you to know when a repair can be done and when it is more prudent to replace the windshield.

How windshields influence the safety of vehicles

The windshield is not just a shield against the wind and debris. It is a structural part. It adds to the strength of the vehicle frame. In modern cars, the windshield aids in the stability of the roof during rollovers and the correct deployment of the airbags.

Due to this structural position, even minor cracks may pose a safety concern if they spread or weaken the glass. Early repair of the damage prevents the need for more extensive repairs.

When a windshield can be fixed

In most cases, small chips and cracks can be efficiently fixed without replacing the whole windshield. Repair methods include injecting a special resin into the broken part. This resin is used to fill the crack or chip and make it clear. It stops further spreading.

Repairs can usually be done on the condition that the damage satisfies some criteria:

Small chip size

Chips that are smaller than a coin can usually be repaired. These chips are normally caused by road debris. It could be small stones striking the windshield.

The chip should be shallow and confined to the outer part of the glass. In that case, the technicians can fill the chip with the resin and restore its surface strength.

Short crack length

Cracks under approximately 6 inches (15 centimeters) in most instances can still be repaired. Provided they have not gone beyond several layers of the glass.

However, longer cracks tend to spread rapidly because of:

• Vibration
• Temperature changes
• Road movements.

Damage is away from the edge

Cracks in the middle of the windshield are usually easier to fix. But any damage near the edge of the glass impairs its structural integrity.

Edge cracks exert additional stress on the panel as a whole. As such, Windshield Replacement can be considered the more certain course of action.

Limited number of chips

When the windshield has a single or two small chips, repair can work. But various points of impact undermine the general integrity of the glass. They diminish the efficacy of the repairing techniques.

When replacing the windshield is required

Repairs are effective in cases of slight damage. However, in some cases, a full windshield replacement is necessary to safeguard the vehicle:

Long or spreading cracks

Cracks that exceed several inches tend to grow. The more the crack expands, the weaker the windshield becomes.

Check whether the crack is long or it forks in more than one direction. In that case, the only safe choice is to replace the windshield.

Damage to the driver’s line of sight

A chip or a crack can be technically fixable. But it could be visible. The resin injected during repairs creates a small mark.

When the damage is within the driver’s field of view, it is usually advisable to replace it to ensure visibility.

Deep glass damage

Windshields are made from two layers of laminated glass with a plastic intersection layer. Perhaps a crack has gone through two layers or has reached the inner layer.

Under such circumstances, technicians normally suggest changing the windshield. This ensures adequate protection in case of accidents.

Multiple cracks or chips

A windshield that has multiple points of impact might seem to be fixable separately. But the cumulative damage undermines the entire glass surface. Several fixes might also diminish visual clarity.

Windshield replacement gives a clean and structurally sound surface.

Seek a professional inspection

Only an experienced technician can assess the windshield and come up with a decision on whether to repair or replace. When conducting an inspection, professionals can evaluate a number of aspects, such as:

• Size of the chip or crack
• Depth of the damage
• Location on the windshield
• Number of damaged areas.

Technicians also examine whether the damage disrupts vehicle sensors or cameras. Proper alignment is important for the technology to work.

The takeaway

Windshield damage spreads fast. Within a short period of time, a little chip may turn into a long crack because of:

• Temperature fluctuations
• Road vibrations
• Changes in pressure when driving
• Further effects of debris.

The faster the damage is addressed, the higher the probability of glass being repaired rather than replaced.

Early intervention also prevents moisture and dirt from entering the crack. This may complicate the repair.