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How To Fix Hairline Crack In Windshield

Posted by Mariios on January 30, 2024

A hairline crack in your windshield may seem minor, but addressing it promptly can prevent further damage and ensure your safety. Before starting the windshield repair process, thoroughly check it for any additional cracks or chips, addressing multiple issues simultaneously to save time. Invest in a windshield repair service kit containing a bridge apparatus, resin, and curing strips, ensuring it’s suitable for hairline crack repairs. Additionally, utilize a razor blade or a windshield scraper to remove any excessive resin, and end the process by applying an additional round of glass cleaner. In this blog, we’ll walk you through fixing a hairline crack in your windshield.

7 Steps To Avoid Professional Windshield Repair Service

1. Check Your Windows

Before diving into the mobile auto glass repair process, thoroughly inspect your windshield for any other cracks or chips. Addressing multiple issues at once can save you time and effort. If you notice any significant damage, it’s advisable to consult a professional, especially considering the convenience that a mobile auto glass service can provide for a comprehensive evaluation.

2. Buy a Bridge Kit

Invest in a windshield repair service kit that includes a bridge apparatus, resin, curing strips, and other necessary tools. These kits are readily available at auto parts stores or online. Ensure that the kit you choose is suitable for repairing hairline cracks.

3. Clean the Crack

Clean the crack and the surrounding area with a mobile auto glass repair cleaner to remove dirt, debris, or residue. This step is crucial to ensure a proper bond between the resin and the glass. Use a microfiber cloth to dry the area thoroughly.

4. Add End Cracks

If the hairline crack has small chips at the ends, create small “end cracks” using a pointed object like a safety pin. This helps prevent the crack from spreading further during the repair process.

5. Put Resin in the Injector

Follow the instructions provided with your windshield repair service kit to set up the bridge apparatus. Place the injector over the crack and fill it with the provided resin. The injector creates a vacuum, pulling the air out of the crack and allowing the resin to penetrate and fill the void.

6. Apply Resurfacing Resin

Once the initial injection is complete, apply resurfacing resin to the crack. This resin is designed to level the surface and create a smooth finish. Use a curing strip to cover the crack and resin, and ensure there’s no air trapped in the repaired area.

7. Clean The Window

Remove the curing strip and clean the window after the resin has cured, typically under direct sunlight for the recommended time. Use a razor blade or a windshield scraper to remove any excess resin from the surface. Finish with another round of glass cleaner to leave your windshield clear and polished. When considering windshield replacement tips, be sure to follow manufacturer recommendations, choose a reputable service provider, and inquire about the type of adhesive used for a secure and effective replacement.

Can hairline windshield cracks be repaired?

Yes, hairline windshield cracks can often be repaired. Repairability depends on factors such as the crack’s size, location, and extent. A professional windshield repair service can fix the hairline crack if the damage is within certain criteria.

Is it OK to leave a small crack in the windshield?

While small cracks may seem harmless, leaving them unaddressed is not advisable. Even minor cracks can worsen due to temperature changes, vibrations, and road conditions.

Is windshield crack repair worth it?

Yes, windshield repair service is worth it, especially for smaller cracks. Repairing a crack early can prevent it from spreading, saving you from the cost and inconvenience of replacing the entire windshield. However, the decision depends on factors like the size, location, and type of crack, so consulting with a professional is recommended.

How do you fix hairline cracks in glass?

Hairline cracks in glass, including windshields, are typically fixed through resin injection. This process helps minimize the crack’s appearance and restore the glass’s structural integrity.


All in all, fixing a hairline crack in your windshield is a manageable DIY task that can save you money and prevent further damage. But still, to avoid the issue from getting worse, it is better for you to get professional help.
So, if you’re looking for a reliable and trusted windshield repair service provider, choose none other than Blue Diamond Auto Glass.

January 30, 2024
Written by
Blue Diamond Auto Glass
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