A lock is only as strong as its installation. Even the highest-grade security lock won’t do much if it’s installed incorrectly or with weak materials. A poorly fitted lock can be easy to bypass, leaving your property vulnerable. Whether you’re upgrading security in your home or for a rental property, taking the right steps during installation is key (no pun intended!) to keeping everything secure.
Choosing the Right Lock for Your Needs

Not all locks are created equal, and different spaces require different levels of security. Before installation, it’s crucial to choose the right lock for the job.
- Deadbolts – Ideal for external doors, deadbolts offer strong protection against forced entry. Look for Grade 1 deadbolts for maximum security.
- Smart Locks – These provide convenience and keyless access while still offering strong security. Make sure to choose a reputable brand with encrypted technology.
- Mortice Locks – Commonly found on commercial and older residential doors, mortice locks are highly durable and resistant to tampering.
- Euro Cylinder Locks – Often used in uPVC doors, but be cautious—some cheaper models are vulnerable to lock snapping. Opt for anti-snap cylinders for added security.
The Most Common Lock Installation Mistakes
Even if you have the best lock, simple mistakes during installation can compromise its effectiveness. Avoid these common errors to keep your security intact.
Misaligned Lock and Strike Plate
If the lock and strike plate aren’t aligned properly, the lock won’t fully engage. This can cause issues with locking and unlocking and even lead to damage over time. Double-check alignment before securing everything in place. If you’re struggling, contact a professional for help, such as safe installation Perth.
Using Weak or Incorrect Screws
Many locks come with short screws that are easy to snap or pull out with force. Always replace them with longer, heavy-duty screws, at least 6.5 cm (2.5 inches) in length, to reinforce the lock’s strength.
Failing to Secure the Door Frame
Even a strong lock won’t hold if the door frame is weak. Reinforce the frame with a strike plate or security plate, especially on external doors.
Over-tightening or Under-tightening Screws
Too much pressure on screws can strip threads or cause damage to the lock itself. On the flip side, if screws aren’t tightened enough, the lock may feel loose or wobbly, making it easier to manipulate.
Ignoring Smart Lock Calibration
If installing a smart lock, proper calibration is crucial. Many issues stem from skipping this step, leading to malfunctioning keypads, inconsistent locking, or battery drainage. Always follow manufacturer instructions carefully.
DIY vs. Professional Installation – What’s the Best Option?

Many people attempt to install locks themselves to save money, but this isn’t always the best decision. Here’s when to DIY and when to call in a professional locksmith.
When DIY Works Well
- Replacing a standard doorknob or deadbolt – If you have basic tools and some patience, swapping out an existing lock is manageable.
- Smart locks with clear installation guides – Some smart locks are designed for easy DIY installation. Just follow the instructions carefully.
- Reinforcing an existing lock – Adding security plates or upgrading screws is a simple task for most people.
When to Call a Locksmith
- Installing a lock from scratch – Drilling into a door without experience can lead to misalignment and damage.
- Upgrading to high-security locks – Some locks, like mortice locks or biometric locks, require expert installation.
- When dealing with commercial security – Business properties need professional-grade security, and mistakes could be costly.
Additional Steps to Strengthen Security
Beyond the lock itself, other factors contribute to a well-secured property. Consider these additional measures for even greater protection.
Install a Reinforced Door
A strong lock won’t do much on a flimsy door. Solid core or metal doors are the best choices for external entry points.
Use Security Pins and Anti-Pick Features
Some locks come with built-in anti-pick pins or security features that make them harder to manipulate. If security is a concern, always check for these features.
Add a Secondary Lock
For doors that require extra protection, consider adding a secondary lock such as a chain lock or a sliding bolt. These provide an additional barrier against forced entry.
Upgrade to a Video Doorbell or CCTV
Pairing a strong lock with a security camera or video doorbell adds an extra layer of safety. It deters intruders and provides a record of any suspicious activity.
How to Check if Your Lock is Secure After Installation

Once your lock is installed, it’s essential to test it to ensure everything is working properly. Here’s a quick checklist to confirm your lock is fully secure:
Does the key turn smoothly? If you need to force the key, something may be misaligned.
Does the latch or deadbolt fully extend into the strike plate? A partial lock engagement reduces security.
Is the door snug but not too tight? Too much pressure can strain the lock over time.
Does the door frame feel sturdy? Weak frames make forced entry easier, even with a strong lock.
For smart locks: Do all digital features work properly? Test the keypad, app integration, and backup keys.
Lock in Security the Right Way
Proper lock installation isn’t just about fitting hardware—it’s about ensuring the entire entry system is secure. By choosing the right lock, avoiding common mistakes, and reinforcing your door, you’re taking the best steps to protect your property. Whether you go the DIY route or hire a locksmith, always prioritise quality and security over convenience. Investing a little extra time and effort now can save you from security headaches later.