How to Fix a Cracked Mirror

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Apr 11, 2023

A cracked mirror can be a real eyesore, whether it’s a decorative centerpiece in your living room or an essential part of your daily routine. But instead of immediately replacing it with a new mirror, did you know that you can fix a cracked mirror yourself with some simple tools and techniques?

In this comprehensive guide, we’ll walk you through the process of repairing a cracked mirror, so you can restore its original beauty and function.

Not only will you save money by fixing the mirror yourself, but you’ll also feel a sense of accomplishment and pride in your handiwork. Follow these step-by-step instructions, and you’ll soon have a mirror that looks as good as new.

What to Do with Broken Mirrors?

Mirror Glass

1. Assess the Damage

Before you begin, it’s crucial to determine whether your cracked mirror can be repaired or if it’s better to replace it altogether. If the crack is relatively small and doesn’t pose a safety hazard, it’s worth trying to fix it.

However, if the mirror is severely damaged or shattered into many pieces, it may be best to invest in a new one for safety and aesthetic reasons.

2. Gather Your Supplies

To fix a cracked mirror, you’ll need the following materials:

  • Clear epoxy or mirror mastic
  • A small paintbrush or toothpick
  • A razor blade or scraper
  • Painter’s tape
  • A clean cloth or paper towel
  • Rubbing alcohol or glass cleaner
  • Gloves (optional)

3. Prepare the Mirror

Start by cleaning the mirror to ensure there’s no dirt or debris in the crack. Use a clean cloth or paper towel dampened with rubbing alcohol or glass cleaner to gently clean the surface. Be careful not to cut yourself on the cracked edges. Once the mirror is clean, let it dry completely.

4. Apply the Epoxy or Mirror Mastic

Put on your gloves, if desired, to protect your hands from the adhesive. Then, using a small paintbrush or toothpick, carefully apply the clear epoxy or mirror mastic to the crack. Make sure to fill the entire length of the crack, as well as any smaller cracks branching off from the main one.

For a smooth, even finish, use the razor blade or scraper to remove any excess adhesive from the mirror’s surface. Wipe the blade clean with a paper towel or cloth after each pass to avoid spreading the adhesive.

5. Secure the Crack

To prevent the crack from spreading further, apply painter’s tape to the mirror, running it perpendicular to the crack. This will help stabilize the glass while the adhesive dries. Make sure the tape is firmly pressed down, but don’t apply too much pressure, as this could cause the crack to grow.

6. Allow the Adhesive to Dry

Follow the manufacturer’s instructions for the drying time of the epoxy or mirror mastic you’re using. Generally, it takes about 24 hours for the adhesive to fully cure. During this time, avoid touching or moving the mirror, as this could weaken the bond.

7. Remove the Tape and Clean the Mirror

Once the adhesive has dried completely, carefully remove the painter’s tape from the mirror. Be gentle to avoid causing further damage. Finally, use a clean cloth or paper towel and rubbing alcohol to clean any residue from the mirror’s surface.

Additional Tips for Fixing a Cracked Mirror

Now that you’ve successfully repaired your cracked mirror, here are some extra tips to help you maintain its longevity and keep it looking great:

1. Hang the Mirror Securely

Epoxy Resin Adhesive

Ensure that your entire mirror is securely hung on the wall using appropriate hardware, such as mirror clips, brackets, or a French cleat. This will minimize the risk of accidental damage and prevent stress on the glass, which could cause the crack to reappear.

2. Clean Your Mirror with Care

Standard Windshield Repair Kit

When cleaning your mirror’s surface, avoid using abrasive cleaners or scrubbing too hard. Instead, use a soft cloth or microfiber towel and gentle glass cleaner to keep the surface clean and streak-free. This will help protect the flat surface and maintain the mirror’s overall appearance.

3. Inspect Your Mirror Regularly

Air Bubbles

Make it a habit to regularly inspect your mirror for any signs of wear or damage. If you notice any new cracks or chips, address them promptly to prevent further damage. With proper care and maintenance, your repaired mirror should last for many years to come.

4. Consider Applying a Protective Film

Stabilizer Film

For added protection, you can apply a clear, adhesive safety film to the mirror’s surface. This will help keep the glass intact in case of future accidents and prevent potential injuries caused by broken glass.

5. Consult a Professional if Needed

Local Auto Supply Store

If you’re unsure about repairing a cracked mirror yourself or if the damage is extensive, it’s always a good idea to consult a professional glass repair specialist. They can provide expert advice and ensure the safety and integrity of your mirror.


Broken Mirror

Fixing a cracked mirror may seem like a daunting task, but with the right tools and techniques, you can successfully restore your broken reflection. By following this step-by-step guide, you’ll not only save money but also gain valuable DIY skills. Just remember to assess the damage first, gather the necessary supplies, and take your time to ensure a professional-looking result.

Shattered Glass

In some cases, you may still notice a faint line where the crack was, but your mirror will be safe to use and much more visually appealing than before. Keep in mind that this method is best for minor cracks and damages. If your mirror is severely shattered or poses a safety risk, it’s advisable to replace it with a new one.

Cracked Mirror Repair

With patience, care, and attention to detail, you can turn a cracked mirror into a beautiful and functional piece once again. So don’t let a broken reflection ruin your day – fix it up and enjoy the satisfaction of a job well done.

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