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Can a Car With a Cracked Windshield Go Through a Carwash

Can a Car With a Cracked Windshield Go Through a Carwash?

No, Oxnard drivers should avoid taking a car with a cracked windshield through an automatic carwash. High pressure jets (1,000-1,500 psi), rotating brushes, and coastal temperature shifts common in Oxnard facilities can force the crack to spread, weaken roof to glass support, and turn a simple resin repair into a full windshield replacement. Hand wash the vehicle or repair the glass first.

In Oxnard’s salt laden coastal air, cracks expand faster, so prompt repair matters. Oxnard Mobile Auto Glass provides onsite windshield repair and replacement across the city, restoring safety before your next carwash.

(805) 625-9344

Why Automatic Carwashes Can Make Cracks Worse

Automatic carwashes combine water, soap, and moving parts to clean a car quickly. For a windshield with no damage, this process is generally safe. But when a crack or chip is already present:

Water Under High Pressure

Water at more than 1,000 psi can push dirt and cleaning solution into tiny gaps. Over time, this pressure forces the crack to open wider.

Brush Contact

Cloth or soft bristle brushes spin against the surface. Even slight bending of the glass puts more stress on the weak point of a crack.

Soap and Detergent

Cleaning agents can seep into a crack and weaken the glass edges. Once the edge is undercut, the crack can grow more easily.

Vibration in the System

Rollers and conveyors move your car through the wash at a steady pace. These small vibrations add up and can cause the crack to lengthen.

Adding these factors together makes it easy for what began as a small chip to turn into a long crack that needs a full windshield swap.

Oxnard Mobile Auto Glass · Can a Car With a Cracked Windshield Go Through a Carwash?

The Role of Oxnard’s Coastal Climate

Living near the ocean means salt always finds its way into the air and onto surfaces. Salt alone can speed up the breakdown of many materials, including the glass seal around your windshield.

Salt Particles in Cracks

Tiny grains of salt settle into fissures. When water hits the surface, those grains expand and push the glass apart.

Daily Temperature Changes

Morning marine layer fog often keeps temperatures in the mid 50s Fahrenheit. By mid-afternoon, sunny skies push that into the mid 70s. This swing causes the glass to contract and expand around a crack, making it longer.

Humidity and Mist

Higher humidity means more moisture in the air. That moisture can get into a crack, freeze at night or evaporate in the sun, and cause microscopic shifts in the glass edge.

Wind and Debris

On windy days, tiny particles of sand or grit can be driven against the glass. These particles can chip away at the crack’s edge, making it rougher and easier to grow under pressure.

These local factors mean that what might stay stable elsewhere can become unstable here.

Types of Windshield Damage

Understanding the kind of damage you have helps decide how quickly to act—and whether you’ll need a windshield replacement. Common damage types include:

Bull’s Eye or Star Chips

Circular marks with spokes radiating out. If they are smaller than a quarter, they are often good candidates for resin repair.

Long Linear Cracks

Straight or slightly curved lines that run several inches. These almost always need professional replacement, especially if they reach the edge.

Combination Breaks

A mix of chips and lines. These are more complex and sometimes require full replacement even if the lines are short.

Edge Cracks

Cracks that start within two inches of the windshield edge. These are at higher risk of growing because the frame offers less support there.

How to Clean a Cracked Windshield Without Causing More Damage

Hand Wash with Care
  • Rinse off loose dirt with low pressure water.
  • Use a mild glass cleaner and a soft microfiber towel.
  • Wipe from the center outward so you don’t drag grime toward the crack.
DIY Repair Kits (When You Can’t Wait)
  • Clean the area around the chip according to the kit instructions.
  • Apply the resin slowly, filling the damaged spot from the bottom up.
  • Let it dry in direct sunlight or under a UV lamp before handling.
Touchless Carwash (If Absolutely Necessary)
  • Check that the wash uses no brushes and keeps pressure below 1,000 psi.
  • Stay in the car so you can stop the wash if you hear or feel any shift in the glass.
  • Avoid using heated drying cycles, which boost temperature too quickly.
Mobile Repair Services
  • Book a service that cleans and fills the crack on site.
  • The technician drills a tiny hole if needed, injects resin, and cures it with UV light.
  • Once the repair is done, you can safely clean the rest of the vehicle.

The Repair Process Explained

A typical professional auto glass repair follows these steps:

Inspection

The technician measures the length, depth, and location of the damage and decides if repair or replacement is best.

Preparation

They clean the damaged area to remove all dust, dirt, and loose glass.

Resin Injection

A clear resin is forced into the crack under vacuum or low pressure. This fills the air gaps and bonds the glass back together.

Curing

UV light hardens the resin in minutes. This restores most of the original strength and clarity.

Finishing

Excess resin is scraped off, and the area is polished so it is as smooth as possible.

For small chips, this whole process takes under an hour and costs far less than a full windshield swap.

Why Quick Repair Is Worth It

Lower Cost

Repairing a chip or short crack usually runs $50 to $80. Waiting can turn that into a $300 + bill.

Better Visibility

Filling a crack limits the way light bends when it passes through the glass, so you see more clearly on the road.

Insurance Benefits

Many insurers cover full repair costs if done quickly. Letting the damage grow can lead to out of pocket expenses.

Safety in a Crash

The windshield helps keep the roof from collapsing in a rollover. A solid bond matters more than you might think.

Aftercare Tips

Avoid Extreme Temperatures

Park in the shade when it’s hot, and don’t run a hot defroster on a cold windshield right away.

Check for New Damage

Look at the repair site a few days later. If you see any new hairline cracks, call your repair shop.

Keep It Clean

Regularly wash with low pressure water and mild cleaner to keep dirt from working into the edges of the repair.

Final Thoughts

Driving through an automatic carwash in Oxnard with a cracked windshield risks making that crack much worse. Salt air, changing temperatures, and powerful wash equipment all push a small chip into a larger problem. By washing carefully by hand, choosing gentle cleaning options, and fixing damage quickly, you protect your visibility, safety, and wallet. Taking the time now to repair a chip can save you stress and money down the road.

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