How Security Door Locks Work

How Security Door Locks Work

If you have an older security door, chances are the lock is obsolete. New technologies are keeping security doors one step ahead of intruders in the arms race for home and commercial security. It’s worth understanding the value of new locking systems for improved security.

Security Door Locks Basics

New triple contact systems with 5 pin cylinder locks (or equivalent) should be a priority when choosing a security door. They will contribute to maximising the strength and effectiveness of your security door. 3-Point locks with an anti-jimmy protective metal plate or extrusion will slow down would-be intruders in their attempts to gain access to your premises, even if they have implements such as crowbars or screwdrivers.

There are also many lock options for added security:

  • For commercial premises – You also want the security door lock to be keyed alike to your master key system for ease of convenience. Master keys are easier to keep secure than a large number of different keys, which may be distributed among multiple parties. Loss of keys and related access problems for staff are also eliminated.

An added advantage of this approach is to ensure that the keys cannot be readily copied. This will give you a greater level of control over who has access to keys and it is particularly important in commercial applications. Restrictive key systems like this are ideal for good onsite security management and they’re highly effective.

  • Always avoid cheap lock imports. They’re cheap mainly because they’re inferior quality locks. Usually, these locks are made of low-grade alloys and have relatively primitive locking mechanisms. Weak locks are a very real, serious, security risk. Australian locks are specifically designed for Australian Standard rated doors and they are much more strongly constructed to meet Australian Standard requirements.

Security Doors Lock Considerations

You’ll need to consider your lock upgrades according to your practical onsite needs:

  • Home security door locks: Replace older locks ASAP. Choose a modern 3 or 5 point lock as the benchmark standard for a new lock. These locks are highly resistant and very reliable. If you’re upgrading your security doors, ask your supplier about lock options.
  • Commercial security door locks: Depending on the type of security doors you have, you may need to consider a combination of a general lock upgrades and a master key system for onsite security. This is a double security approach, managing keys while also ensuring maximum security for your doors. Your lock system should be the latest for your type of security door.

Want to Ask an Expert about Your Security Door Locks?

If you’d like more information or you need help finding the right locks for your security doors, just call The Australian Trellis Door Co. We’re your nationwide supplier of security doors from Brisbane to Perth.  For any help and advice you need, contact us online or simply call the local Australian Trellis Door Co. store in your state. You can also call us toll free on 1300 289 159 from anywhere in Australia.


Are Security Doors Effective?

Are Security Doors Effective?

People often wonder whether or not security doors are really effective. Can they actually protect your home or commercial property from would-be thieves? The short answer is yes. Security doors are able to prevent intrusions unless intruders put significant force into gaining entry, usually using tools.

For the most part, simply the presence of security doors will prevent intruders from even attempting entry. They’re a deterrent, they’re a physical barrier, and they’re highly effective.

Security Doors Effectiveness, Explained

The actual performance of security doors needs to be explained:

Given sufficient time and using the right equipment, all security doors can be penetrated. The aim is to ensure that the security door you purchase is less vulnerable to break-ins than others – the Australian Standards AS 5039 and 5040 are an absolute minimum requirement.

Once you have established that the door (and method of installation) is Australian Standard compliant, there are other factors that will increase the likelihood that your security door will be less prone to break-ins than others.

These factors include a full steel frame, steel bar in-fills or stainless steel mesh infill, triple contact locking, and 5-pin cylinder locks (or equivalent). Avoid doors that have aluminium rivets that are exposed to intruders.

Basic flyscreen safety doors that are designed more as insect screens rather than security screen doors will stop insects and bugs (most likely) but they will not be effective against would-be intruders. A good modern security door can also provide this screening function without compromising your home security.

Security Doors Intrusion Prevention Considerations

Generally, the stronger the security door, the less likely it is to be penetrated.  The major issues are actually site-related. Security doors need to be well-suited to reduce the risk of intrusion.

Your security doors are also a useful deterrent, acting as practical obstacles to intrusion:

  • Most intruders will only attempt to force a security door if there are no easy points of access. Trying to force a security door is the most difficult way to gain entry to a property.
  • A heavy duty security door is a very demanding proposition for intruders, even if they do have the equipment required to penetrate it. Modern security doors are rated against force, including direct impacts and attempted leverage of the door frame fixtures. Forcing a security door takes time, and any good onsite security system will spot an attempted entry almost instantly.
  • Commercial security doors are even tougher. These very durable doors may include multiple folding doors, expanding doors, and commercial roller shutters. All of these doors offer very high levels of anti-intruder protection.

Purchasing Security Doors

It is very strongly recommended that residential and commercial property owners seek expert guidance on their choice of security doors. Your doors need to be right for your premises. You can also get useful help and advice from suppliers about access, security measures, locks, and other critical issues.

Need to Ask an Expert about Your Security Doors?

The Australian Trellis Door Co. supplies the latest modern security doors nationwide. Come and explore our huge range of security doors in Melbourne, Sydney, Perth, or Brisbane. If you’d like some practical guidance or security door advice, contact us online or you can call us toll free on 1300 289 159 Australia-wide. We’re happy to assist and provide any services you need.