Be sure to scroll down... there may be more than one question on this page!

Dear NH,

I am trying to install a security chain on my front door, and don't know which side of the lock goes on the door??  Also, do you have any installation tips?

TS

TS,

The security chain is mounted on the interior door moulding and the slide catch is mounted on the door, with the opening for the chain located away from the door edge.  The slide should be mounted close to the edge of the door per the manufacturer's instructions.  Mounting the slide catch too far from the edge of the door might make it difficult to use the chain!   This type of lock comes keyed or unkeyed.  Keyed security chains (shown) allow you to lock or unlock the chain from the outside!

There are similar security devices that don't use chains, such as the "Grizzly"swing-type Door Guard (right), which is stronger than a chain, still allows the door to be slightly opened to view visitors but doesn't scratch the door or frame the way a swinging chain can!

Do they work?  Yes, if you install the lock properly.  For extra strength, you might even want to use longer screws than the ones provided with the kit.  For example, the door frame side could use screws up to 2" to firmly mount into the structural frame of the door.  For the door side, screws with a length 1/8" to1/4" shorter than the thickness of the door will give the most strength.  Also, if possible use minimum #10 screws.

Of course, pre-drill all screw holes to make installation easier!

Return to NH's Question and Answer Index