Tamper-resistant, non-reversing screws (included in kit)
Metal cutting blade
Let's be frank: Fortifying those basement windows can go a long way in making your home feel safer. It's like posting a "No Intruders Allowed" sign on your abode and backing that up with, well, a big metal grate. We’ll walk you through how to secure your basement windows, breaking down the process of adding security bars, aka grilles, for your protection.
Prep for Installation
If you plan to use window bars to shore up security, you must have an alternative escape plan for your basement in case of fire or emergency. Simply put, you need an easily accessible exit to the outside. Additionally, check your local guidelines before installing fixed security bars. You may be required to install hinged bars that can open from the inside without tools or keys.
Measure Your Basement Windows
Photo: chaiyoot / Adobe Stock
First things first: Grab your measuring tape. You need to accurately measure the dimensions of the windows you wish to secure. Measure both the width and the height of the window opening. It’s best to know what kind of mount you’ll be installing before you get the measurements, as some types require additional space.
Inside Mount
An inside mount is for interior bars that you install within the window frame. You will need to measure the width and height inside of the frame.
Flush Mount
Bars that mount flush are typically for exterior installation with the bars secured into the wall around the outside of the window. You will want to account for the window brackets—around 3 inches on each side.
Projection Brackets
Providing a three-inch or more projection, these brackets ensure secure positioning away from the exterior mounting surface, maintaining both security and ample distance from your window.
Buy the Right Materials
Now that you have the correct measurements, it's time to shop. Head to your local home improvement store or check out the options online. Look for window bars or grilles that match your basement windows' measurements. Make sure the kit includes all the necessary hardware and installation instructions. If the kit does not include tamper-proof screws, pick up a set.
There are two main types of security bars or grilles:
Fixed window bars: These bars are permanently installed and cannot be opened or moved. They provide a high level of security but limit emergency exit options.
Window grilles: Grilles are decorative exterior bars that enhance security while adding an aesthetic element to your windows. They come in various designs and materials, including wrought iron and steel. They also limit emergency exit options.
Note that some kits will allow you to trim the mounting bars using a metal saw for the perfect fit, but aim to purchase a kit with exact measurements if you’re uncomfortable cutting metal.
Test the Fit
Take a moment to place the security bars against your basement window. Ensure they align correctly with the window opening and provide sufficient coverage for security. If any adjustments are needed, including a trip to the hardware store to make an exchange, now's the time to make it.
Cut the Metal Bars
If you need to resize the security bars to fit your basement windows, it's crucial to prioritize safety. So grab your work gloves and glasses.
First, measure the window's width and height accurately. Using a metal-cutting hacksaw or reciprocating saw with a metal-cutting blade, mark the measured dimensions on the bars. Secure the bars firmly in a vice or clamp to prevent movement during cutting.
Begin cutting along the marked lines, using steady and even strokes. Afterward, smooth any rough edges with a metal file or grinder. Double-check the fit before final installation to ensure it’s secure and snug.
Mark the Mounting Locations
Get your pencil or chalk. Mark the spots where you'll attach the bars or grilles to the basement window. You'll typically mark points at each corner and along the sides of the window frame. The type of mount you selected—inside, flush, or projection—will determine bracket placement. Follow the manufacturer’s instructions. Not doing so could void the warranty.
Ensure the Marks Are Level
Grab your level and confirm that those marks are level and straight. A little extra time spent on alignment will pay off when the installation is complete, both for security and appearance.
Drill Pilot Holes
Photo: HENADZI BUKA / Adobe Stock
It's time to bring out the power drill. Drill pilot holes at the marked points. Use a drill bit that matches the screws that came with your window bars or grilles.
Remember to use the correct drill bit for the wall material, too. You may need a drill bit made for wood or metal on inside mounts or masonry bits for exterior bars on concrete or brick surfaces.
Attach the Basement Security Bars
Get a helper to assist with positioning the securing bars over the window, ensuring it is aligned with the pilot holes. Then, insert and twist the non-reversing, tamper-proof safety screws into each pilot hole by hand.
Now grab your drill and secure each screw. Make sure the bars stay level and in position during the process. Also, when tightening up, make sure everything feels stable and secure.
Test for Security
Photo: Mr.Stock / Adobe Stock
With the installation done, give it a test. Try to open the basement window to ensure that the bars or grilles are firmly in place and provide no gaps that could be exploited.
If there are gaps, you may need to install additional bars or reinforcements to close the openings effectively. Another idea is to install window alarm sensors that connect to a security hub. Lastly, secure your garage door if it connects to the basement for an extra layer of protection.
Regular Maintenance
Last but not least, remember to periodically check your basement window bars or grilles to ensure they remain secure and in good condition. Tighten any loose screws and take care of any necessary cleaning or repairs.
DIY vs. Hiring a Pro
Ultimately, the answer to this question depends on a few things. What is your comfort level with DIY projects? How much is in your budget for the project? And most important, are you confident you can install the bars correctly?
Also, there's the issue of local regulations. A local security system installer will better understand building codes and have specific experience with this work, including cutting bars to fit your window. Consulting with a professional installer will also help you decide what kind of bars to install based on your security needs.
Frequently Asked Questions
Among the various entry points into your residence, it's crucial to recognize that your basement windows are arguably the most susceptible. Basements usually have windows facing the side and back yards, often concealed from driveway floodlights, porch lighting, and doorbell cameras. Their vulnerability underscores the importance of reinforcing basement window security to safeguard your home from break-ins.
You can shield the area with a well cover. Start by selecting a sturdy, tamper-resistant, crystal-clear polycarbonate option. It will allow light into your basement while providing valuable protection. Ensure the cover is firmly anchored to the window well, creating a formidable barrier against unauthorized access. Regular maintenance checks are essential to keep these covers in optimal condition.
In addition to window well covers or bars, you can take a few more steps to boost basement window security. Try motion-activated lighting; it scares off potential intruders by lighting up when someone gets too close. Strengthening your window glass with impact-resistant security film can also deter forced entry. A dependable home security system with window sensors and cameras offers real-time monitoring and alerts for added protection. Lastly, fostering good relationships with neighbors can establish a supportive community watch network, enhancing your home's safety.
Deirdre is a seasoned DIYer and home improvement writer. She believes in the transformative powers of deep cleaning and painting to revitalize any space. Her articles have appeared in HomeLight, The Spruce, Realtor, and more.
Deirdre is a seasoned DIYer and home improvement writer. She believes in the transformative powers of deep cleaning and painting to revitalize any space. Her articles have appeared in HomeLight, The Spruce, Realtor, and more.
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