Windows Are Weak Link in Home Security

Windows are often the weak link in the home security chain. Intruders can break glass or pry windows open to get into your home. Some sliding windows can be lifted out of their tracks, even when locked.

And it is not unheard of for burglars to gain entry by chipping away putty and removing an entire pane.

This fact sheet conforms to the 2005 National Building Code, which is used as a model for most provincial and municipal building regulations. Recommendations based on Code are shown in italics. Non-mandatory recommendations are in regular type. Most Canadian building codes (including the National Building Code) require that windows in new dwellings conform to the Windows standard of the Canadian Standards Association (CAN/CSA-A440-M)

This standard applies to all types of windows (wood, metal and plastic) and different window configurations (fixed, casement, hopper, vertical sliding and horizontal sliding). It categorizes levels of window air leakage (A1, A2, A3), water leakage (B1 to B7) and wind-force resistance (C1 to C5).

Figure 2 All windows within 2 m (6 1/2 ft) of ground level should be burglar resistant. Secure windows that are easily accessed by exterior structures or accessories, such as balconies or canopies.
Building regulations require that residential windows within 2 m (6 1/2 ft.) of ground level conform to the provisions in clause 10.13 of CAN/CSA-A440-M regarding resistance to forced entry. The conformance level F2 must be marked on the window.

What can homeowners do to protect themselves? Plenty. The method ”or combination of methods” you choose will depend on the vulnerabilities of your windows and your security needs. Here are some points to consider when assessing your windows:

• In terms of security, how effective is the window's design? What are its weak points? (The following section about types of windows will help you answer this question.)
• Is the window accessible from the ground, from a garage or porch roof, tree, TV antenna or trellis? If it is an apartment window, can it be reached from a fire escape, ledge or balcony?
• How shatter-resistant is the glazing?
• Are the sash and frame in good repair?
• How effective is the locking mechanism?
• Is the window visible from the street and neighbouring houses or hidden from view by shrubbery, a garage or an enclosed porch? Does it overlook a major thoroughfare or a rarely used alleyway?
  Is the area well lit at night?

You should also consider more general questions related to home security, including the crime rate in your area, the value of the contents you wish to protect and how much you can afford to spend.