Alachua County Sheriff's Office

Locking Out Trouble

Sound locking devices cannot make a residence completely impregnable. They can force the criminal into a situation in which they must break glass in order to enter -- something they would probably like to avoid.

The amount of money spent on security hardware should be proportional to what is being protected. But by the same token, purchasing security hardware which meets minimal technical requirements listed below could also protect your family from bodily injury. Since prices for security hardware vary -- depending on the area, the manufacturer, and differences in cosmetic features -- the buyer should “shop around.”

Chain latches can be ripped off the door with minimum pressure. The best way to check a caller’s identity is to use a wide angle viewer or peephole.

A common type of lock in many homes and apartments is the key in knob or spring latch type. This particular lock is easily defeated by most amateur burglars with a credit card or screwdriver inserted between latch and strike plate. This lock offers no security and should be supplemented by a single or double cylinder deadbolt or rim type or surface mounted lock. The spring latch with a plunger is similar to the spring latch lock but has a small bar or device.

A single cylinder deadbolt lock should be mounted on a solid wood core door when there is no breakable glass within 40 inches of the interior locking mechanism. The single cylinder deadbolt lock has a thumb turn piece on the inside.

A double cylinder deadbolt lock, which is key operated from both the interior and exterior, should be used when there is glass within 40 inches of the interior locking mechanism.

If this type of lock is used while the home is occupied, either leave the key in the lock or hanging somewhere near the lock. Children should be trained in the use of this lock and know the exact location of the key. When the dwelling is unattended, the keys should be hanging out of reach of a burglar who may break the glass.

When moving into a new dwelling, have tumblers in all exterior locks changed. This can be done inexpensively by a licensed locksmith.

Both single and double cylinder deadbolt locks should meet these basic criteria to be a good security device:

• The bolt must extend a minimum of 1" and be case hardened or contain a hardened insert.
• The cylinder guard must be tapered or spherical in design to make it difficult to grip with pliers or a wrench.
• It must be made of solid metal - not hollow casting or stamped metal, and preferably be able to turn freely.
• The connecting screws that hold the lock together must both be on the inside.
• There must be no exposed screw heads on the exterior of the door. The connecting screws must be at least ¼" in diameter and screw into solid metal stock - not screw post.
• When shopping for a deadbolt lock, you may wish to take the diagram and description page to a locksmith or hardware store to be sure the lock you buy meets all of the requirements.

Do not allow children to open the door to strangers!

Rim type of surface locks use a vertical or horizontal deadbolt locking mechanism. These locks are mounted on the interior surface of the door. A rim type lock is good if it is the interlocking type. With a proper strike, an interlocking rim lock can be used on either in-swing or out-swing door.

Proper installation of this lock is extremely important. The strike should be secure to the door jamb with minimum 2" wood screws. The lock must be through-bolted to the door with carriage bolts. Do not use wood screws to mount a lock.

As a second line of defense, you may want to consider a security closet for storage of valuables which are kept in the home. This closet should be equipped with a solid wood core door with hinges that have non-removable pins and a good quality deadbolt.

Securing Your Windows

Double Hung Window

• The latches on many double hung windows can be easily jimmied or pried open. This type of window can be simply and inexpensively made secure.
• The window can be pinned by drilling a hole at a slight downward angle through the first sash and into, but not through the second sash. The window can then be pinned with a strong nail. Additional holes may be drilled for pinning the window in a slightly open position for ventilation.
• Several types of keyed locks which offer effective protection are available for double hung windows. They are inexpensive and easy to install. But remember to master key all window locks for convenience and train children in their use.
• Thumb turn locks in the center of most double hung windows offer very little security.
• A stick or wood dowel can be securely wedged between the top and bottom portions of the window to secure bottom sash. The stick can be secured to the inside of the window frame with pieces of hook and loop material. This way, the stick can be shortened to allow for window ventilation. This will not secure upper sash with double hung windows.

Don't hide keys under a mat, over the doorsill - or anywhere outside.

Awning Type Windows

Awning type windows are difficult to secure. The removal of the inside operator handle adds some security, but keep the handle handy in case of emergency. Awning windows should be tightly closed to enhance security.

Sliding Glass Windows

Sliding glass windows can be secured in the same manner as the sliding glass door. Pins through the frame, screws in the track, or keyed locks can all be used. Many inexpensive auxiliary locks are available.

Casement Windows

Casement windows provide good security. Keyed locks are also available for this type window for additional security. Make sure the latch works properly and the operator handle has no excess play.

Jalousie Windows

Jalousie windows are very high security risks and should be replaced if at all possible.

They can be secured by installing metal grating on the inside of the window with a quick release feature in the event of fire. At a comparable cost of installing grating, the windows can be replaced with another type which offers better security.

Require identification from all repair and delivery personnel. If in doubt, check the authenticity of the identification by calling the company before letting the person into your home. Check I.D. through the peephole viewer.

Padlocks and Hasps

Padlocks

Padlocks should be of case hardened steel construction with a minimum 9/32" shackle. The lock should have a double locking mechanism on both the heel and toe of the shackle. It should be of heavy body construction with a minimum five pin tumbler.

The bottom end of the padlock may have a key number stamped on it. This number should be obliterated and recorded elsewhere to eliminate the possibility of unauthorized key duplication.

Hasps

The hasp should be as strong as the lock and have no screws or bolts visible when secured. Screws which hold the hasp in place should be as long as the material holding them will allow. If installed on metal, carriage bolts with large washers should be used to prevent prying of the hasp.