A deadbolt is the most important lock on your house, and also the one most people give the least thought to. They grab whatever is on the shelf, screw it on, and assume they are protected. But deadbolts vary enormously in strength, and the gap between a good one and a weak one is the gap between a door that holds and a door that gives way. Best K Locksmith installs deadbolts across Ottawa, and here is how to choose one that actually earns its place on your front door.
Single, Double, and Why It Matters
The first choice is the bolt configuration, and it has real safety implications.
A single-cylinder deadbolt uses a key on the outside and a thumb-turn on the inside. It is the most common choice for a reason: in an emergency, anyone inside can turn the knob and leave instantly, no key needed.
A double-cylinder deadbolt needs a key on both sides. It removes the risk of an intruder breaking a nearby window, reaching in, and turning the thumb-turn, but it introduces a serious downside: if you cannot find the key in a fire, you cannot get out. For most homes we lean toward a single cylinder, sometimes paired with laminated or reinforced glass near the door instead. When homeowners book deadbolt installation service with us, this trade-off is one of the first things we walk through.
Grade Is Not a Marketing Word
As with all door hardware, deadbolts are graded by ANSI/BHMA from 3 to 1, with Grade 1 being the strongest.
| Grade | Where it belongs | What you get |
|---|---|---|
| Grade 3 | Interior or low-risk doors | Minimum residential protection |
| Grade 2 | Most home entry doors | A solid, higher-cycle everyday choice |
| Grade 1 | Front doors, security-minded homes | The strongest force and durability rating |
A Grade 1 or strong Grade 2 deadbolt is the sensible target for an exterior door. The extra cost over a bargain Grade 3 is small compared with what the door is protecting.
The Bolt and the Strike Do the Real Work
Two physical details decide whether a deadbolt survives a kick. First, throw length: the bolt should extend at least a full inch into the frame, a one-inch throw, so it cannot be forced back with a push. Second, the strike plate: it must be anchored with long screws that reach the wall stud behind the door frame, not short screws biting into soft trim.
This second point is where most failures happen. In many Ottawa homes, the original strike is held by short screws into pine, and that is what splinters. Upgrading to a reinforced strike with three-inch screws is one of the cheapest, most effective security improvements you can make, and we install it as a matter of course.
Smart Deadbolts: Convenience With a Caveat
Keypad and smart deadbolts are increasingly popular, and for good reason. They let you hand out codes instead of keys, track who comes and goes, and stop worrying about a lost key floating around. If you choose one, still check its ANSI grade; convenience features do not replace physical strength. And remember that an electronic lock needs working batteries, so keep a plan for power. For many Ottawa homeowners, a strong mechanical deadbolt remains the reliable core, with smart hardware added where it genuinely helps.
When You Do Not Need a New Lock at All
Sometimes the deadbolt on your door is perfectly good and the real concern is who might have a key. If you have just moved into a home, lost a key, or had a roommate move out, you may not need new hardware, just rekeying your existing locks. Rekeying changes the internal pins so old keys stop working, at a fraction of the cost of full replacement. A quick assessment tells you which path makes sense.
Getting the Install Right
A deadbolt is only as good as its installation. The bore has to be clean and correctly sized, the bolt has to line up with the strike so it throws fully without forcing, and the whole assembly has to sit square in the door. A misaligned deadbolt that only half-engages offers a fraction of its rated protection. This is why professional installation is worth it, and it is part of our broader work as a residential locksmith in Ottawa.
Frequently Asked Questions
Should I get a single or double-cylinder deadbolt?
For most homes, single-cylinder is safer because anyone inside can exit instantly without a key. Double-cylinder prevents reach-through attacks near glass but can trap people in a fire. We usually recommend single-cylinder with reinforced glass if break-through is a concern.
How long should the bolt throw be?
Aim for a full one-inch throw. A bolt that extends deep into the frame resists being forced back, which is one of the most important factors in whether a door holds.
Is upgrading the strike plate really worth it?
Absolutely. It is inexpensive and highly effective. Long screws that reach the wall stud stop the frame from splintering on a kick, which is where most forced entries actually succeed.
Do I need a new deadbolt if I just moved in?
Not necessarily. If the existing deadbolt is solid, rekeying it is often enough. That changes the pins so any old keys stop working, without the cost of new hardware.
Choose Once, Choose Right
The deadbolt on your door is not the place to save a few dollars. Best K Locksmith helps Ottawa homeowners pick the right grade, configuration, and reinforcement, and installs it so it performs to its rating.
Call Best K Locksmith at (613) 707-4884. We are based at 3835 McBean St in Ottawa and available 24/7 for emergencies.
