Orangeville, ON (Harold Doan and Sons Ltd.) We have all read the ad lines written by major manufacturers attesting to the strength and durability of their deadbolt locks. But an equally important link in the chain of security is the strikes.

Manufacturers are giving more effort to improving the quality of the strike. This new emphasis has also provided an opportunity to upgrade customers’ security by adding on an item of real worth. Here is a short evolution of the strike.

The standard strike (see Figure 1) is 1″ x 2 1/4″ and is furnished with two #8 – 3/4″ wood screws. Security is moderate and limited by the strength of the door jamb. A very serviceable strike, it affords a limited degree of jamb reinforcement.

The appearance of the security strike (see Figure 2) brought more attention to reinforcing the jamb and using longer screws to draw strength from the framing members behind the jamb. A new size format of 1 1/4″ x 3 5/8″ and a new heavier gauge steel, this strike is furnished with four screws, two #10 – 2 1/2″ and two #10 – 1 1/2″. the 2 1/2″ screws are installed on the stop side of the strike. They penetrate the jamb and enter the stud behind, thus anchoring the strike to the building. The 1 1/2″ screws are installed on the trim side of the strike. In most cases, they too reach the stud.

We now see a strike that is more than a decorative scar plate. A true jamb reinforcer, this security strike provides a greater degree of jamb reinforcement.

The small format security strike (see Figure 3) also uses four screws. This strike uses the standard 1 1/8″ x 2 3/4″ format, is made of heavy gauge steel, and is packaged with two #10 – 3″ screws and two #8 – 3/4″ screws. The 3″ screws, installed on the stop side of the strike, penetrate the doorjamb and find strength in the studs. The longer length guarantees anchoring of the strike in cases where the jamb is up to 1 1/2″ from the studs.

The shorter screws are installed on the trim side of the strike.

This security reinforcer and strike plate combination (see Figure 4) uses four screws. The strike, a standard 1 1/8″ x 2 3/4″ brass material, is accompanied by a 1/8″ steel reinforcer and two 3/16″ x 3″ screws on the stop side of the strike. The finish strike plate is installed over the reinforcer, using the smaller screws.

This reinforcer works equally well with the latch lock strike plate when it is necessary to reinforce or repair a broken jamb.

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Fig. 1
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Fig. 2
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Fig. 3
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Fig. 4

Harold Doan and Sons Ltd is a professional mobile locksmith, serving Orangeville, Dufferin County and the surrounding area. Call us to help you find good, solid, workable security solutions. Solutions that allow you to proactively protect your premises and the assets on those premises. Better security is part of our Security Solutions package customized to your specific security needs.