Windows Security, Window Guards

Steel bars or grills are sometimes used to secure windows. While these may be effective in increasing burglar-resistance, they can also hinder the escape of occupants in a fire or impede rescue by firefighters. If installed on bedroom windows, they may contravene building code requirements unless they are designed to be readily openable from the inside.

In basements that do not contain rooms intended for sleeping, such protection is particularly effective as basement windows normally offer poor security and are a favourite target for burglars.

Solid iron bars should be 25 mm (1 in.) in diameter. Iron pipe 20 mm (3/4 in.) in diameter can also be used, but the pipe should be filled with sand-cement mortar or have a tempered steel bar inside to prevent it from being cut with a hacksaw.

Window frames to support these guards must be very strong or the guard itself will be of little value. On windows that could be used as emergency exits, install guards that can be easily removed in an emergency by every member of the family.

All hardware for window guards should be installed with tamper-resistant fasteners with enough strength to resist the tremendous pulling and spreading forces that can be exerted during a determined entry. Fasteners should be long enough to penetrate through the window frame into the concrete or structural lumber. If anchoring to solid brick, concrete or stone, sink the rods or bolts into at least 50 mm (2 in.) of the foundation material.

Heavy metal mesh can be permanently installed over a vulnerable window that is not used as a secondary or emergency exit. The wire should be at least 3 mm (1/8 in.) in diameter with openings no more than 50 mm (2 in.) across. Attach the wire to the window frame with round-headed or machine bolts.

If bars or grills are too unsightly, consider using hinged wooden shutters or aluminum roll-shutters to protect windows. Both are especially useful on cabins and cottages where shattering glass is not likely to be heard. Choose heavy, working wooden shutters of solid construction instead of the flimsy, decorative kind. Mount hinges and locks on the inside of wooden shutters, where they will be protected from attack.

You have many options to improve your window security and the rest of your home.