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    How to Repair a Cracked or Broken Window

    Shane's Glass • October 20, 2023

    Do you have a cracked window? Perhaps you are looking for tips on how to repair it? Repairing your own windows can save you time and money, but it can also be dangerous if you are not experienced in it. That's why we recommend seeking help from experts in glass repairs for more complex cases. But while you wait for their assistance, this blog will provide you with the necessary tips on how you can repair cracked windows temporarily.


    In the following sections, we will discuss some common causes of window cracks and breaks, a few steps to repair them, and the importance of seeking professional help for a permanent solution.

    Why do glass windows crack?

    Glass windows can crack for a variety of reasons, and understanding these factors can help prevent or address the issue. Some common causes of glass window cracking include:

    Age

    Like any other fixture in your home, glass windows also have a lifespan and may also become weak and brittle over time. General wear and tear commonly occurs after years of use, making them more susceptible to cracking. The average lifespan of a glass window is around 15 to 20 years. So if you have noticed any cracks in your windows during this time frame, it may be a sign that they have reached the end of their lifespan.

    broken window

    Hard impact

    Hard impact is one of the most common reasons why your window glass cracks. If your glass was impacted by a hard object, or something hit it with too much force, then it's possible for your glass to instantly break. For instance, if someone throws a large rock at your window, then it can suddenly break or shatter due to the high impact it has received. In some instances, strong winds and storms may also cause objects to fly into your window, causing them to crack or break. Depending on how strong the impact is, the size of the impact cracks on your window glass can vary.

    Pressure

    If you ever noticed that there are cracks that appear out of nowhere, these might be caused by pressure. Pressure cracks often occur due to the changes in the pressure system caused by weather conditions. When wind pushes against a window glass or when there is excess weight on an unsupported sill, cracks can appear. You can tell that the crack is caused by pressure when the edges are jagged or wavy and they come around the edges of windows. Fortunately, pressure cracks can be repaired by filling in the gap with a sealant or adhesive.

    Temperature stress

    Stress cracks are often caused when extreme temperature fluctuations occur in your home. When temperatures drop near freezing levels, they can greatly impact the window glass and cause stress cracks in the frame or window seals. Meanwhile, when windows are exposed to direct sunlight for long periods of time, they can also create stresses that lead to cracking.


    A huge temperature difference between the interior and exterior of a structure can cause stress cracks to develop. These cracks typically start from one edge of the window glass and spread outward with the window expanding or contracting due to temperature changes.

    How can you quickly fix a cracked glass window?

    When it comes to fixing a cracked glass window, you have the option to go for a quick, temporary fix to buy some time or to commit to a more permanent solution. While temporary fixes will eventually need to be replaced with a more permanent solution, they can still be effective in the mean time. Here are some temporary solutions that can help you fix your cracked window.

    Glass adhesive

    Most glass adhesives are intended to fix vehicle windows but they may also work on a cracked window glass. When using a glass adhesive, read the instructions very carefully to make sure that the product is compatible with glass and appropriate for the type of window you're working on.

    Plastic cover

    Using plastic cover or a plastic brace to fix a cracked glass definitely is not the best option but it can still work as a temporary solution. To do this, you need to tape the plastic cover on both sides of the cracked glass to secure the window. Make sure to use durable tape so it doesn't come off easily.

    Nail polish

    Applying several coats of clear nail polish on your window's glass surface is one way to easily bond the broken the cracks together. However, nail polish may only last for a few weeks and will need to be replaced eventually.

    Tape

    Heavy-duty tapes such as masking tape, packing tape, or duct tape can help hold the crack together temporarily. For small cracks, a strip of tape should be enough to cover up the superficial cracks. Depending on the length of the crack, you may need to apply the tape twice.

    Epoxy

    Epoxy or super glue might be too time-consuming to use but it offers a great waterproof solution for a cracked window glass. Unlike other temporary fixes, epoxy provides a strong and almost permanent solution that can last longer than other adhesives.

    How to fix a broken window using epoxy?

    Epoxy is a thermosetting polymer that can offer your cracked window with a strong and clean seal. If applied properly, cracks may even become invisible as soon as the epoxy hardens. Here is a step-by-step guide on how you can use epoxy to fix a broken window:


    Things you will need:

    • Epoxy
    • Clean cotton rag
    • Glass cleaner or liquid dishwashing soap
    • Putty knife
    • Protective gloves and safety goggles
    • Stick or disposable spoon for mixing
    window repair

    Thus, to help you out with fixing the cracks on your window glass, here is a step-by-step guide that you can follow:

    Remove the glass

    The first thing that you want to do before you get your windows fixed is to remove from its frame. To do this, you want to wear protective gloves and safety goggles to avoid any potential injuries from the broken glass.

    Clean the glass

    Next, you need to clean the cracked window using a glass cleaner and a clean cotton rag to ensure that all dirt, debris, fingerprints, and other contaminants are removed from the surface. Keep in mind that you are working on window cracks so you need to be extra careful not to cause additional damage. Once you're done, you can then apply your epoxy to repair the cracks in the glass.

    Prepare the adhesive

    Before mixing the epoxy, you may need to prepare your workspace first to avoid spillage. Two-part epoxy is the most recommended type of adhesive for repairing glass cracks. Depending on the size of the crack, you'll need to mix equal amounts of resin and hardener so that your epoxy will cure properly. Mix the epoxy using a stick for at least 20 seconds to ensure a strong bond.

    Repair glass

    At this point, you can carefully apply the epoxy across the window cracks using a putty knife. Make sure to do this quickly but accurately before the epoxy hardens. If you are fixing multiple pieces of glass, you need to apply epoxy on each piece before putting them together. On the other hand, a single piece of cracked glass only requires epoxy on the cracked surface itself. Remove excess epoxy until the glass is smooth and even.

    Clean your window glass

    After removing the excess epoxy, allow it to dry and cure for at least 24 hours before cleaning it again. This step is important to ensure that there are no residual pieces of epoxy left on the glass. After drying, clean the surface using a glass cleaner and clean rag to wipe off any remaining dirt or debris from the window. Finally, you can then finish your repair job by applying a fresh layer of sealant around the edges of the glass to prevent further water damage.

    What is the best way to fix cracked glass windows permanently?

    If you are looking for the best long-term solution to fix your cracked window then you should consider asking for professional help from a trusted glass repair specialist to ensure you get the best permanent results.


    Professional glass repair specialists not only have the knowledge and skills needed to repair your window, but they also have access to the right tools and products for the job. No matter how big or small the crack is, they can surely get a way to fix them flawlessly. Furthermore, they can provide you with professional advice on how to prevent the damage from happening again in the future.


    In terms of safety, professional glass experts are also trained to handle glass repairs with caution and care, minimising the risk of further damage or injury. With their knowledge, expertise, and guaranteed experience, hiring a professional glass repair specialist can surely save you time and money in the long run.

    Conclusion

    Having a broken or cracked window not only affects the aesthetic appeal of your home, but it also compromises its security and insulation. Using the right tools and techniques, you can fix the issue temporarily by following the steps listed in this blog. However, if not addressed properly, it can lead to further damage and cost you even more in the long run. To ensure that the problem is fixed for good, the best solution is to hire a professional glass repair specialist.


    At Shane's Glass, we can provide you with the most reliable and efficient repair services for your glass windows. Whether you need repair or replacement, we guarantee quality work. Reach out to Shane's Glass today for a free quote on our services.

    • GET IN TOUCH

      I hope you enjoy reading this blog post.

      If you’d like more information or a free quote on any one of our services, simply get in touch today.


      We’re always delighted to assist.


      GET IN TOUCH

    I hope you enjoy reading this blog post.

    If you’d like more information or a free quote on any one of our services, simply get in touch today.

    We’re always delighted to assist.

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