Make Your Windows Harder to Break with Security Film or Hardened Glass has been live since September 2011, we specialise in both expert prepper guides, and a daily curated feed of the best prepper content online.

Windows are a significant vulnerability in any home or office, providing an opportunity for criminals to break in and cause harm or steal valuable property. To increase security and protect your family or business, it’s essential to invest in window upgrades such as security film or hardened glass. This article will explore both options, examining their benefits, differences, and installation processes, to help you make an informed decision for your home or workplace.

Security Film: A Strong Layer of Protection

Security film is a transparent, adhesive layer applied to the interior surface of a window. It offers a cost-effective solution to reinforce the glass against breakage, including impacts from rocks, hammers, or even baseball bats. Benefits of security film include:

  1. Increased Strength: Security film can hold shattered glass together, making it much more difficult for intruders to break through. It is available in various thicknesses, providing varying levels of protection against impacts.
  2. UV Protection: High-quality security films block up to 99% of harmful UV rays, reducing fading of your furnishings and flooring.
  3. Energy Efficiency: Security film can help insulate your windows, lowering energy costs by reducing heat transfer.
  4. Privacy: Reflective or tinted security films can provide additional privacy by making it harder for outsiders to see into your home or office.

Hardened Glass: A Tougher Alternative

Hardened or tempered glass is created through a process of heating and rapid cooling, making it up to five times stronger than regular glass. It is an excellent choice for those who require a more robust solution for their windows. Benefits of hardened glass include:

  1. Enhanced Durability: Hardened glass is less likely to break when struck by an object. If it does break, it shatters into small, relatively harmless pieces, making it safer than standard glass.
  2. Heat Resistance: Due to the manufacturing process, tempered glass is more resistant to heat and thermal stress, reducing the risk of breakage.
  3. Easy Maintenance: Hardened glass can be cleaned and maintained just like regular glass, requiring no special care.
  4. Aesthetic Appeal: Unlike security film, which may have a slightly noticeable appearance, hardened glass is indistinguishable from regular glass, preserving the look of your windows.

Installation and Cost Considerations

Security film can be applied by a professional installer or as a DIY project. The cost depends on the type of film, window size, and the number of windows you need to protect. It is generally a more affordable option compared to replacing your windows with hardened glass.

Hardened glass installation requires professional assistance, as the process involves removing and replacing your existing windows. The cost of tempered glass windows varies based on factors such as size, type, and installation complexity.


Both security film and hardened glass offer valuable protection for your home or office. While security film is a more cost-effective solution that provides added benefits like UV protection and energy efficiency, hardened glass is a sturdier alternative that may be more suitable for high-risk environments. Carefully consider your security needs, budget, and aesthetic preferences before choosing the best option for your windows.