Windows Security, Locks

Key-operated window locks are the most reliable for security; however, they should not be used in rooms for sleeping. If there is a fire, misplaced keys might prevent an emergency escape; critical minutes could be lost blindly searching for a key in a smoke-filled room. Key operated window locks are difficult to use for people with agility problems and limited hand function.

Keyed locks should not be used in other rooms unless every ambulatory family occupant is able to quickly unlock the window in an emergency. All window locks in the house should be openable with the same key. Spare keys should be kept handy but out of sight and out of reach from anyone outside the dwelling. Locks should be solid and designed to lock the window in a partly open position if the window is required for ventilation. Locks should be attached with fasteners of sufficient length to provide reasonable resistance to exterior entry forces.

Operable skylights should be fitted with a keyed lock or sturdy shackle and padlock with a five-pin tumbler. Install the steel hasp so that no mounting screws or bolts are exposed when the hasp is closed. Fixed skylights should be installed with fasteners on the inside.