Security Window Film: Everything You Need to Know | By Jordan Frankel

With security concerns rising, protecting your property goes beyond locked doors. Windows need attention too. Window security film is a powerful, often overlooked solution that reinforces glass, deterring burglars and preventing dangerous break-ins.

With over 25 years in the security industry, I’ve dedicated my career to finding real, effective ways to keep people and their property safe. From understanding the mindsets of intruders to exploring the latest in security innovations, I know what works and what doesn’t. My goal is to share reliable insights so you can make informed choices about security—because everyone deserves peace of mind.

This article explores how window security film works, its key benefits, and why it’s a smart investment for burglary prevention. Learn how this resilient layer turns vulnerable windows into secure barriers, giving peace of mind and constant protection against burglars and other dangerous intruders.

What Is Security Window Film?

Security window film is a highly durable polyester or mylar coating applied to windows to strengthen the glass. Think of it as an invisible shield. Regular glass shatters with one blow, allowing intruders to enter. But security film holds the broken glass together, making entry very difficult. Trusted for years in high-security environments, this window protection is now common in homes and businesses.

How it Works

Security film uses its multiple layers of polyester or mylar to add flexibility and tensile strength to glass. High tensile strength gives it impact resistance, allowing the film to absorb and disperse shockwaves across the window frame.

Security window film is applied to the interior side of glass surfaces, forming a protective, optically clear barrier. When someone breaks the glass, the film holds the shards together in a spiderweb effect, delaying intruders’ entry.

Burglars find windows with security film challenging because breaking through takes longer and creates more noise. This delay is key in break-in protection, as most intruders abandon attempts when they can’t gain fast entry.

How Effective Is Security Film?

Though studies on window films and burglary prevention are limited, security window films are widely recognized for reinforcing glass and deterring entry.

One of the most trusted products in this category is ShatterGARD’s BurglarGARD window security film. Tested under extreme conditions, BurglarGARD withstands multiple blows from objects like baseball bats, rocks, and tire irons. This added layer can buy you and your family valuable time to seek safety and contact authorities.

A Security Journal study found that using multiple security devices on windows and doors increases burglary protection by 20 times. Though the study didn’t specifically assess security window films, it underscores the importance of reinforcing entry points with more than standard locks to deter burglars.

The Benefits of Security Window Film

Investing in security window film provides benefits beyond burglary prevention. Here are the key advantages:

• Enhanced Security: A burglar expects to break a window quickly and silently. However, security film prevents this. Breaking into a window coated with security film requires a lot more effort and attention-getting noise. This added difficulty delays entry and increases the likelihood that the intruder will give up.
• Protection from Shattered Glass: Broken glass from an intruder, stray ball, or severe weather can harm people inside. Window films prevent glass from shattering into razor-sharp shards.
• UV Protection: Many high-quality security films block up to 98% of harmful UV rays that damage carpeting, upholstery, and cause skin cancer. This helps to protect your furniture, flooring, photos, artwork, and more from sun damage.
• Increased Privacy: Some glass security films are tinted, providing added privacy from onlookers while still allowing natural light into your home or office.
• Energy Efficiency: Tinted window security films reduce interior temperatures during the summer months. This can improve HVAC efficiency and lower energy costs.

How Window Film is Applied

Professionals recommend installation for the best results, although DIY options are available. Here’s how the experts apply security window film:

1. Preparation: The first step involves thoroughly cleaning the interior glass surface to remove any dust, grime, or debris. Any imperfections can affect the adhesion of the security film.
2. Measuring and Cutting: The film is measured and cut to the exact dimensions of the window. The installer may leave a slight margin at the edges to ensure a perfect fit.
3. Application Solution: A special solution is sprayed onto the glass to help the film adhere smoothly without bubbles or creases.
4. Placing the Film: The installer carefully positions the film on the window, starting at the top and working down to avoid air pockets.
5. Smoothing and Securing: A special squeegee is used to remove any bubbles and ensure the film lays flat against the glass. The installer smooths out the edges and allows the film to cure.
6. Drying: The curing process can take anywhere from 21 to 60 days, depending on the environment. After curing, the film bonds securely to the glass, providing optimal protection.

How Much Does It Cost?

The cost of security window film varies based on the film type, window size, and installation method. Professional installation typically costs between $16 and $21 per square foot. While most companies offer a three-year warranty on labor and materials, some companies, like ShatterGARD, provide a limited lifetime warranty, ensuring a solid return on investment.

Higher-priced, thicker security films were the norm 20 years ago. Today’s improved thinner films achieve the same results with better clarity. Some companies market thicker films as stronger, but this approach relies on outdated technology. A quality, thinner film provides the same protection at a better price.

Is Security Window Film Worth the Investment?

Yes. A high-quality security window film is a one-time investment that offers 24/7 protection. It strengthens windows against forced entry, making it a valuable addition to home security. The savings from avoided break-ins and the peace of mind from added protection offset the cost. Some may choose to apply the film themselves, but professional installation ensures it adheres securely for maximum effectiveness.

Unsure about investing? Remember, even if the windowpane breaks, the film keeps shards in place, delaying and potentially preventing an intruder’s entry. This added layer is a smart investment that can help you avoid the emotional and financial toll of a break-in.

Conclusion: A Smart, Affordable Security Solution

Security window film is a highly effective and affordable way to strengthen your home or business’s defenses against break-ins. By investing in a quality film, such as BurglarGARD, you’re taking an important step in safeguarding your property.

Whether you’re safeguarding your family, possessions, or business assets, security films offer a versatile solution for any environment. Don’t wait until it’s too late. Add this valuable security measure to your property and enjoy the peace of mind that comes with knowing your windows are no longer a weak link.