7 Signs Your Lock Needs Professional Attention
Warning signs that your lock is developing problems—and when to act.
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Locks Playing Up? We Fix Them.
Stiff keys, grinding mechanisms, doors that won't latch properly—small problems become big ones. We diagnose the issue on-site and repair it properly, often saving you the cost of a full replacement.
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Warning Signs
When Your Lock Tells You Something's Wrong
These symptoms might seem minor, but they're warnings. Address them now—before your lock fails at the worst possible moment.
Key Sticking or Grinding?
That resistance you feel when turning the key isn't normal. It's friction from wear, dirt, or damage inside the mechanism. The longer you ignore it, the harder it gets— until one day the key won't turn at all.
Door Not Latching Properly?
Pushing harder, lifting the handle, jiggling—these daily workarounds mean something's misaligned or worn. Your lock might still work, but you're compensating for a problem that's only going to get worse.
Lock Feels Loose or Wobbly?
A loose cylinder or mechanism isn't just annoying—it's a security risk. The lock might still engage, but for how long? Loose locks are easier to attack and more likely to fail.
Had the Same Lock for Years?
Locks wear out like anything mechanical. If it's been there since you moved in—or longer—it's probably overdue for attention. A service now prevents an emergency later.
Lock Affected by Weather?
Outdoor locks take a beating—expansion in heat, contraction in cold, rust from rain. If your lock only plays up in certain weather, there's an underlying problem that gets worse each season.
Key Turns But Nothing Happens?
When the key turns freely but the lock doesn't engage, the internal mechanism is failing. The lock might look fine from outside, but it's no longer doing its job. This needs immediate attention.
Lock Jammed or Forced?
Someone tried to break in? Had to force the door yourself when it jammed? Even if the lock still works, there may be hidden damage. Get it checked before it becomes a security vulnerability.
Multiple Locks Having Issues?
When several locks start acting up around the same time, it's often age-related wear across your property. A professional assessment can prioritise what needs attention now versus what can wait.
Why Choose Us
Repair Done Right vs Quick Fixes
There's a difference between making a lock work for now and actually solving the problem.
| What You Get | Trulox | Average Locksmith | DIY Attempt |
|---|---|---|---|
| DBS Background Checked | ? | — | |
| Proper Diagnosis First | ? | ||
| Honest Repair vs Replace Advice | — | ||
| Quality Replacement Parts | ? | ? | |
| Warranty on Work | |||
| Root Cause Fixed (Not Just Symptoms) | ? | ||
| Fully Insured Work | ? |
Our Process
How We Fix Your Lock
Proper diagnosis, honest advice, quality repair. Here's exactly what happens.
Describe the Problem
Tell us what's happening. Sticking? Grinding? Not latching? We'll ask a few questions to understand the issue and give you an honest idea of what might be involved.
~2 minutesOn-Site Diagnosis
We inspect the lock, mechanism, and door alignment to find the root cause—not just the symptoms. Sometimes the obvious problem isn't the real problem.
~10 minutesHonest Assessment
We explain what's wrong in plain English and give you options. Repair if viable, replacement if not. We tell you the cost before any work starts. You decide.
~5 minutesExpert Repair
Using quality parts and proper techniques, we restore full function. No bodge jobs, no temporary fixes—just professional workmanship that lasts.
15-45 minutesWorking Lock, Happy Customer
Smooth operation, proper security. We test everything thoroughly before we leave and show you the difference. Payment only when you're satisfied.
Problem solved Our Expertise
Lock Problems We Fix
From simple stiffness to complex mechanism failures—we've seen and fixed it all.
Cylinder Issues
Stiff, grinding, or seized cylinders are our bread and butter. We can often free up, lubricate, or replace just the cylinder—saving the cost of a full lock change.
Multipoint Gearbox
Hooks not engaging, splitspindle problems, failed gearboxes. We diagnose multipoint lock issues accurately and repair or replace individual components without replacing the whole mechanism unnecessarily.
Door Alignment
Lock working fine but door won't close properly? Misalignment is often the real culprit—especially on older houses or after weather changes. Adjustable with the right tools and knowledge.
Lever Mechanisms
Traditional mortice locks with stiff or broken levers. Often repairable without replacing the entire lock, preserving the original character of period doors.
Latch Problems
Latch not retracting properly or won't spring back? A common issue caused by worn springs, dirt buildup, or misalignment. Usually a straightforward fix.
Strike Plate Adjustment
Lock engages but feels forced? Door needs pushing or lifting? The strike plate may need repositioning for smooth operation. A simple adjustment with significant impact.
Full Service
What's Included in Your Repair
Professional service from diagnosis to solution.
Full Diagnosis
Complete inspection of the lock, door, and frame. We find the actual cause, not just the obvious symptoms.
Clear Explanation
We tell you exactly what's wrong in plain language, what it takes to fix it, and give you options—repair or replace.
Professional Repair
Quality work using proper techniques and parts. No bodge jobs—just professional workmanship that solves the problem properly.
Function Test
Thorough testing before we consider the job done. Lock, door, mechanism—we make sure everything works smoothly.
Maintenance Advice
Tips to keep your locks working smoothly and how to spot early warning signs before they become problems.
Work Warranty
Our repairs are backed by a workmanship guarantee. If the same problem comes back, so do we—at no extra cost.
What Our Customers Say
Real stories from people whose locks work properly again.
"My front door lock had been getting stiffer for months. Trulox came out, diagnosed a worn cylinder, and had it working smoothly in twenty minutes. Wish I'd called sooner instead of fighting with it every day."
Verified customer
"The multipoint lock on my back door stopped engaging properly. I thought I'd need a whole new door! Turns out it was a gearbox issue they fixed for a fraction of what I expected. Really honest service."
Verified customer
"After years of lifting and jiggling to lock my door, I finally called someone. The fix was surprisingly simple—just alignment and lubrication. Should have done it years ago. Door works like new now."
Verified customer
Common Questions About Lock Repair
Honest answers to help you make the right decision.
Is it worth repairing an old lock or should I just replace it?
Repair vs Replace
It depends on the lock type and the problem. Many issues—stiff mechanisms, minor misalignment, worn springs—can be fixed for a fraction of replacement cost. We'll give you an honest assessment: if repair makes sense, we'll do it. If replacement is the better option, we'll tell you why.
Why has my lock suddenly become stiff?
Diagnosis
Common causes include dirt buildup, lack of lubrication, worn internal components, or cylinder damage. Sometimes it's the door itself causing pressure on the mechanism. We diagnose the actual cause rather than just treating symptoms.
Can you fix a lock without replacing it?
Repair Options
Often, yes. Many problems can be solved by cleaning, lubricating, adjusting, or replacing individual components. Full lock replacement is only needed when the mechanism is beyond repair or when upgrading makes more sense.
How do I know if the problem is the lock or the door?
Understanding
If the lock works fine when the door is open but sticks when closed, the issue is usually door alignment rather than the lock itself. We check both and address the actual problem—not just the obvious one.
What if you can't repair it—do I still pay?
Cost Clarity
If we can't fix the problem, we'll explain why and give you options. You'll never pay for a repair that wasn't completed. Our call-out fee covers the diagnosis, and any repair costs are agreed before we start work.
Should I try lubricating the lock myself first?
DIY Advice
Light lubrication with a proper lock lubricant (not WD-40) can help minor stiffness. But if the problem persists or you're using excessive force, stop—you might make it worse. Some issues need professional attention before they become emergencies.
Why does my lock only stick in cold weather?
Seasonal Issues
Metal contracts in cold weather, which can tighten tolerances in worn mechanisms. Moisture can also freeze inside the lock. If it happens every winter, there's usually an underlying issue that gets worse each year.
Can a damaged lock be a security risk even if it still works?
Security
Yes. A lock that's been forced, has a loose cylinder, or doesn't engage properly may appear functional but could be vulnerable to attack. If you've had any break-in attempts, even unsuccessful ones, get the lock checked.
How long does a typical lock repair take?
Time
Most repairs take 15-45 minutes once we've diagnosed the problem. Simple fixes like lubrication or adjustment are quick. Component replacement or multipoint gearbox work takes longer. We'll give you a realistic timeframe.
What maintenance can I do to prevent future problems?
Prevention
Keep locks clean and lightly lubricated with graphite or PTFE spray (not oil-based products). Don't force stiff locks—address problems early. Check door alignment seasonally, especially on wooden frames that swell and shrink.
Our Guarantee
Repairs You Can Rely On
Honest diagnosis, quality work, and we stand behind everything we do.
Honest Diagnosis
We tell you what's actually wrong—not what costs more to fix. If repair makes sense, we repair. If replacement is better, we explain why.
Upfront Pricing
You know the cost before we start work. No surprises, no hidden extras. If the price needs to change, we explain why and get your agreement first.
Root Cause Fix
We don't just treat symptoms. We find and fix the actual problem so it doesn't keep coming back. That's the difference between a repair and a patch job.
We Stand Behind It
If the same problem comes back after our repair, so do we—at no extra charge. We're confident in our work and we prove it.
Expert Advice
Related Reading
Helpful guides for understanding and maintaining your locks.
Lock Problem Diagnosis: Identify Before Calling
Quick diagnostic guide to understand what's wrong before seeking help.
uPVC Multipoint Lock Problems
Gearbox failures, hook issues, and common multipoint mechanism faults.
Mortice Lock Repair Guide
Traditional lock problems—diagnosis, repair options, and when to upgrade.