Re-sizing a Deadbolt Door Preparation

Like many of the new electronic locksets in the marketplace, Schlage’s Residential Electronics Keypad Deadbolts require a 2 1/8” door prep. This is not a problem for many new doors which come already bored to accept door hardware this size. In a retro-fit application however, the consumer might find that they have a 1 1/2" diameter door prep, and will be faced with “re-sizing” the existing hole.

This adds a layer of complexity to the installation, but is within the skill set of most people comfortable using a full-sized electric drill. A jig will be required to centre a hole saw over the existing hole. These are available at most hardware stores for about $20 to $25, and include the 2 1/8” hole saw. Be sure to purchase the bi-metal type if using on a steel door. There is another more “serious” kit available for about $50, which would be ideal for installers.

Once the old deadbolt hardware is off of the door, and you have assembled your supplies, a typical re-sizing would go like this:

If you should need any further assistance on re-sizing a deadbolt door preparation, write to us at info@doorsecurity.ca

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