Best Ways To Repair Your Car Windshield: DIY Steps To Fixing Yourself

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There are two clear ways to remove or repair your car windshield: Take it with a professional or do it yourself. Which one is better? Well, it depends on the size of the crack or chip.

Let’s start with the cheapest and easy way to do it.

Do it yourself

Repair  Car Windshield

If your car windshield has a small chip or crack, there is a cheap and easy solution, here is what you need to do.

  • First, you will need to clean the area. Use a microfiber towel, on top of it pour water or glass cleaner. You want to avoid at all cost to pour any liquid on top or into the crack you are trying to fix.
  • Second, get yourself a windshield repair kit, there are plenty of good options on Amazon, here is one.
  • Third, put a piece of cardboard under the crack, inside the car. This is so you can have a clear vision of where the crack is and how big it is.
  • Fourth, take a safety pin or something pointy, so you can make sure there is no loose glass left in the chip.
  • Fifth, take the seal out of the repair kit, it’s the one with a circle shape and a mini hole in the middle, like a donut. Peel off one side, make sure the chip is right in the middle and place it. Now that is fully secured, peel off the other side.
  • Sixth, take the pedestal out of the kit, make sure to line it up properly, there is a tip that can be used as a guide. Press it down, make sure it doesn’t move and now the chip is completely covered.
  • Seventh, take the resin out, cut the tip and pour 3/4 of it into the chip. Now, you take the empty syringe and push it all the way inside the pedestal. With one hand to hold the syringe down and with the other hand you pull upwards. With the little clip that comes inside the kit, you lock it in that form, creating a vacuum. This will suck all the air out. Let it sit for 10 minutes.
  • You can also give soft taps around the seal to help the air bubbles escape. The main objective of this step is to pull any air out of the crack.
  • Eight, you pull the syringe out to let the air in and push it back inside. Now you are going to move the clip and push it down, about 1/3 of the syringe to put pressure into the resin, forcing it to go into the crack. Let it sit for 20 minutes.
  • Ninth, pull the syringe out, you won’t need it anymore. Now, try to remove the seal slowly from the windshield, you can use the razor blade included in the kit. Don’t worry if some of the resins run down, you can clean it with a paper towel. With the resin left, put a drop right on top of the crack and make sure you the sunlight is shining directly on it.  Place the yellow film on top of the resin drop.

Tenth, using the razor blade, press out the bubbles that might have been formed when you placed the yellow film, just move it in one direction. After that, let it sit in direct sunlight for 15 minutes. If you have a cloudy day or if you are doing in the shade, it will take an hour.

Eleventh, use the razor blade to remove the yellow film. You are done! If you see some resin residues it’s easy to remove with the blade, taking care of not scratching the glass.

Essentially, that’s it, your car windshield is free of any chips or cracks.

Repair Your Car Windshield : Full replacement

Full replacement of car windshield

Now, let’s say that your windshield has a crack that goes from side to side, or that is super big it’s impossible to drive. In this case, you need a new method and new tools. This is the most expensive and long method. Please read carefully.  

15 Steps For A Correct Replacement Of A Car Windshield:

1.      Use hand tools to remove the rearview mirror and any hardware attached to the old windshield.

2.      Remove the wiper blades, windshield gasket, and plastic molding around the windshield perimeter.

3.      Separate the windshield from the pinch weld with a cold knife or razor.

4.      Use a cold knife to cut the urethane seal around the perimeter of the windshield.

5.      Remove the old windshield. Do it carefully so you don’t damage the paint or bonding area.

Now, your windshield frame should be empty. We suggest you to use a small razor blade to remove the old urethane left. Be super careful, so you don’t leave any scratch on the paint.

Don’t worry if you can’t remove all the old urethane, a thin layer helps the new urethane form a stronger bond. Any remains left can be removed with sandpaper or a wire brush, this will prevent it from spreading.

You can start cleaning up the bonding surface, we recommend you to use a stiff nylon brush, it will brush away any loose particles or remains. You can use a vacuum if you see any remains around the area.

6.      Use glass cleaner to clean the new windshield perimeter where the urethane will contact it.

7.      Apply a urethane primer to the old urethane and perimeter of the windshield.

a)      Please note that not all urethanes need this step, so be sure to read carefully the instructions of the product you are using.

8.      Place a continuous and even layer of urethane around the area of the windshield frame.

a)      An electric or air powered caulk gun makes this job a lot easier. But in case you happen to have a hand-powered caulk gun, make sure to locate the urethane in a bowl of warm water for one hour before using it.

b)      Fill any gaps in the urethane bead before you continue.

9.      Install the windshield as soon as possible to prevent the urethane from curing before installation.

10.  Use suction cup window holders to lower the new windshield into place, ask a friend to help.

11.  Position the windshield in the correct spot.

12.  Prevent the windshield from sliding around by using tape to hold it in place a while the urethane cures.

13.  Allow the urethane to cure for the allotted time specified by the manufacturer.

14.  Reinstall the windshield wipers, gasket, plastic molding, rearview mirror, and any hardware you removed.

15.  If necessary, take the car to a dealer to have the ADAS re-calibrated.

Our best advice is to take it to a professional if the crack is too big. Why? Well, the windshield is a key piece involved in your car safety, if you don’t do it properly, it may cause trouble in the future.