Child Safety and Door Locks

The two risks every parent has to balance

Parents of toddlers worry about two opposite things at the same time. The first is a child getting out: through the front door, the back slider, or the gate by the pool. The second is a child getting trapped: in a bathroom, in a bedroom with a lock, in a car, or in a room where a fire or another hazard blocks the way. Good door planning has to address both.

In South Florida, the first worry has an extra edge. Many homes have pools, canals, or lakes close to the house, and a small child who gets outside unseen can reach water in moments. Safety groups and local authorities emphasize layers of protection, which means no single measure is enough. Door hardware is one layer. Supervision, barriers, alarms, and teaching are others.

This guide is general information from a locksmith's perspective. It does not replace advice from a pediatrician, a safety organization, your local fire authority, or your city's building department. Where a rule applies, it comes from those sources, and where this page says to check local requirements, please do.

Why children defeat ordinary locks faster than you expect

A child of two or three can often operate a lever handle, a thumb-turn, or a sliding latch at toddler height. They watch adults do it and copy. A knob that a parent considers hard to turn may be easy for a determined three-year-old. Doors that are left unlocked, or locked with a thumb-turn at child height, offer little resistance.

That is why the common advice is to move controls out of reach. A latch or a lock placed high on the door, well above where a small child can stretch, is harder to defeat. Adults can reach it easily, while a child cannot, at least for a few years. Children grow, so it is worth rechecking every year or so, since a latch that was out of reach at two may be within reach at four.

Also consider how a child might use furniture. A chair, a stool, or a toy chest placed near a door can serve as a step. Keep these away from doors that matter. A well-meaning arrangement of a bench by the front door becomes less helpful when a four-year-old climbs it.

• Place latches and locks out of a child's reach, and recheck as they grow.
• Keep stools, chairs, and toy boxes away from exits.
• Do not rely on a single measure, and use layers.
• Never assume a child cannot open a door, because they learn quickly.

High latches and secondary locks on exterior doors

A simple and widely used measure is a second latch or lock mounted high on an exterior door, such as a slide bolt or a chain-style latch placed near the top. It is used when the family is at home, to keep a child from opening the door and going out. It does not replace the main deadbolt. It adds one more step that a small child cannot manage.

Make sure any added hardware can be operated quickly by an adult from the inside, with one hand, in the dark, in a hurry. A latch that is stiff, that needs a key, or that is hidden behind furniture is a danger in a fire. The point is to slow a child, not an adult.

Installation matters. A latch screwed into thin trim can be pulled out by a determined child, so use screws that reach solid framing. A technician can install a secondary latch properly and check that it does not interfere with the main lock. See deadbolt installation for the main lock, and the home security door checklist for how a secondary latch fits into the whole door.

Sliding glass doors: the most common escape route

Sliding doors are a favorite of small children, because they are easy to push and lead to the yard. Many have a basic latch at a low or middle height that a child can reach. A child who gets through a slider, especially to a pool area, is in a dangerous place.

Options include a latch or lock mounted high on the frame, a secondary bar or pin lock placed at a height an adult can reach, and an alarm that sounds when the door opens. Some are added by the family and some by a technician. Make sure whatever you choose can be released quickly by an adult, and that it does not block the door's normal function. Sliding glass door locks explains what is available.

Do not leave a slider unlatched because it is hard to lock. A track full of debris, a worn roller, or a bent latch can make locking difficult. Cleaning the track or repairing the latch often solves it. If the door is heavy or the glass is cracked, leave it to a technician, since the weight of the glass is a hazard in itself.

Interior doors: bathrooms, bedrooms, and the problem of locked-in children

Most interior privacy locks are meant to be opened from outside in an emergency. A small hole in the knob or lever, opened with a thin tool such as a pin or a flat screwdriver, releases the latch. Know where the tool is kept and how it works. This matters when a toddler locks a bathroom or bedroom door and cannot or will not unlock it.

If you have a young child, consider whether privacy locks are needed on interior doors at all. Some families remove or disable them in bathrooms and children's rooms until a child is older. Others keep them and are careful about the release. Do not install a lock on a child's bedroom door that can be opened only from outside, or only with a key, since it may prevent a child from leaving in an emergency. If you are unsure whether a given arrangement is safe, ask your pediatrician or the local fire department.

For a child who has locked herself in a room, stay calm and talk to her through the door. Ask her to turn the knob the other way. If she cannot, use the emergency release, and if that does not work, do not take risks. See locked inside a bathroom for a plain description of what to do. If the child seems to be in distress or there is any sign of injury, call 911 immediately.

Pool access: doors, gates, and local requirements

In many Florida homes, a door from the house leads to a pool area. Families often add alarms or latches to that door. Rules about pool barriers, door alarms, and self-closing and self-latching hardware vary by location and by the age of the pool, and they are set by state and local authorities. A locksmith can install and adjust hardware, but cannot say what the rules require for your property. Check with your city or county building department.

Our page on pool barrier doors and gate hardware explains the hardware in more detail. The key points are that a gate should close and latch by itself every time, that the latch should be high enough to be out of a young child's reach, and that any door leading to the pool should be treated with extra care.

Remember that barriers and latches are not a substitute for watching children near water. Safety organizations stress supervision, barriers, and teaching water safety together. If you have a pool, speak to your pediatrician and a local water safety program about the layers that apply to your household.

Fire safety comes first: every exit must open from the inside

A fire is the situation in which a child safety measure can become dangerous. In a fire, smoke fills a home fast, visibility drops, and people move by touch and habit. Any lock that needs a key, a hidden release, or a trick to open from the inside is a hazard. Residential exit doors are generally expected to open from the inside without a key, and many rules require that.

This is why a double-cylinder deadbolt, which needs a key on both sides, is discouraged on exit doors. It may keep a child from opening the door, but it may also trap a family in a fire if the key is not at hand. The same applies to home-made measures, such as tying a door shut, blocking it with furniture, or taping the latch.

Our guide to fire safety and door locks sets out the principle in more detail. For specific questions about your home, ask your local fire department. Plan and practice an escape route with your family, and make sure older children know how to open each exit door from inside. Smoke alarms and a practiced plan are as important as any lock.

Alarms, chimes, and other non-lock layers

A door alarm or chime is often a better first step than a more restrictive lock. It makes a sound when the door opens, alerting adults without trapping anyone. Many are battery-powered and easy to install on a door or slider, and they can be turned off by an adult with a button or a switch. Some pool alarms detect the water, and some detect door movement.

Alarms depend on batteries, so choose a day each season to test and change them. Alarms also depend on being switched on. A system that is turned off while adults are at home does little. Train every adult in the household on how it works and when to use it.

Think about other layers too. Fences, gates, and covers around the yard; a clear line of sight from a kitchen or living room; a rule that a child never goes outside without an adult; and a habit of counting heads after any gathering. No single device is as effective as a combination of measures that all work together.

Cars, garages, and other places children get locked in

A locked car is a danger of its own. A child left in a car, or one who climbs in and shuts the door, can be in danger quickly in Florida heat. Never leave a child in a vehicle, and keep car keys and fobs out of reach so a child cannot lock themselves in or start the car. If a child is locked in a car, call 911 right away. Our page on child locked in car explains what to do while help is on the way.

Garages and sheds hold tools, chemicals, and sometimes vehicles. Keep the door between the garage and the house locked, and keep keys out of reach. A garage door opener remote left on a low shelf can be played with and set the door in motion. Do not allow children near an overhead door in operation.

Refrigerators, chests, and other enclosed spaces are a further risk, but outside our scope here. In general, remove or disable latches on old appliances before they are discarded, and keep children away from locked storage.

Keys, PINs, and who has access

Children grow into teenagers, and the household's access arrangements need to grow with them. A child who can be trusted with a key should be told exactly how to use it, and what to do if it is lost. Teach them not to hide a key outside, not to share it, and to tell an adult at once if it goes missing.

For a family with a keypad, change the PIN if it is known by anyone who should no longer have it, such as a former babysitter, a nanny who has left, or a guest. Our guide on keeping keys organized can help you track what exists. If a key is lost, a rekey is a simple step that removes the risk. How rekeying works explains what is involved.

If your family has a nanny, a babysitter, or a cleaner who comes regularly, give them their own credential, if the lock allows it, rather than a shared one. That way, you can end their access without disturbing anyone else's.

A family checklist

Go through these items once, then again each year, or when your child enters a new stage.

1. Walk each exterior door and consider where a child could reach the lock.
2. Add a high latch or alarm where needed, installed into solid framing.
3. Check that every adult can open every exit quickly from inside, without a key.
4. Review slider latches and tracks, and repair any that do not lock firmly.
5. Confirm that pool gates and doors close and latch by themselves, and check local requirements.
6. Know where the emergency release for interior privacy locks is kept.
7. Keep car keys, fobs, and garage remotes out of reach.
8. Practice an escape plan, and test smoke alarms and door alarms.
9. Remove old keys and PINs when caregivers or guests no longer need access.

When to call a locksmith

A locksmith can help with high latches, sliding door hardware, rekeying after a lost key, repair of a gate latch, and the installation of lock hardware that suits your family. Describe your home and your concerns on the phone, and the technician will explain what is possible and what is not. A responsible one will not install anything that could trap people in a fire.

Quotes are given only by phone. Simple jobs may be quoted from the description, and more complicated ones need an on-site visit. There is a service call charge, which is explained before a technician is dispatched. In any emergency involving a child, such as a child locked in a car or a room, call 911 first. For planning and installation, call us when you are ready.

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