Knowledge Centre

Welcome to the Stride Lock & Key Knowledge Centre. Find practical locksmith advice, explanations of common door locks and guidance on protecting your home. Choose a topic below to understand a problem, compare suitable improvements or prepare for a locksmith visit.

If you cannot secure your home or need urgent help with access, visit our Emergency Locksmith page. For planned advice, browse the guides or contact Stride Lock & Key to discuss your door.

Knowledge Centre: choose a topic

Start with lock problems if something is not working, or explore the security guides before planning an upgrade. Each article explains the relevant checks and when an assessment may be needed.

Lock problems and repairs

• Why Is My uPVC Door Hard to Lock?
  Understand alignment, handle resistance and possible mechanism faults.
• Broken Key in a Lock: What Should You Do?
  Find out what to do first and how to avoid making the problem worse.
• Why Won’t My Key Turn in the Lock?
  Explore possible key, cylinder and door-fitting problems.
• Why Won’t My Door Open?
  Understand why a door may stay stuck even when the key turns.
• Sticky Door Lock: Causes and What to Do
  Learn about early warning signs, maintenance and repair options.

Emergency access and locksmith costs

• Locked Out of Your House? What to Do
  Check your immediate options and prepare the information a locksmith needs.
• Locksmith Cost Guide
  See our call-out fees, labour charges and eligible cardholder labour discount.
• Can a Locksmith Open Any Door?
  Understand opening options, access checks and the limits of damage-free entry.
• Non-Destructive Entry Explained
  Learn when hardware may be preserved and when replacement could be needed.

Lock types and security standards

• What Is Lock Snapping?
  Understand the risk to vulnerable cylinders and ways to improve protection.
• Anti-Snap Locks Explained
  Compare security ratings, fitting considerations and key options.
• BS3621 Explained
  Identify the standard and learn what to check with your insurer.
• Euro Cylinder Locks Explained
  Explore cylinder types, dimensions and replacement considerations.
• Mortice Locks Explained
  Compare deadlocks and sashlocks, lever counts and common faults.
• Nightlatches Explained
  Understand latching, deadlocking and internal release functions.

Home security and burglary prevention

• Home Security Checklist
  Work through doors, windows, keys and outside areas in a practical order.
• Holiday Home Security: What to Check Before You Go Away
  Plan locking up, keyholders, deliveries and arrangements during an absence.
• Home CCTV Explained
  Review camera placement, recording, privacy and how cameras support physical security.
• Best Locks for Front Doors
  Compare suitable options for timber, uPVC and composite entrances.
• Target Hardening Explained: Practical Ways to Improve Home Security
  Prioritise physical improvements to doors, windows and boundaries.

Moving house and managing keys

Moving home is a useful time to review who may still hold keys and whether existing locks suit your needs. A change of access and a security upgrade are different decisions; the right approach depends on the hardware and your circumstances.

• Should You Change Your Locks After Moving House?
  Explore why a new set of keys may be worth considering and when suitable existing components can remain.
• Moving House Security Checklist
  Work through key handover, door and window checks, alarm access and first-night security.
• How Many Keys Could Still Exist for Your Home?
  Understand unknown spare keys, what can be checked and how to regain control of access.
• Lock Upgrade vs Lock Replacement After Moving
  Compare changing key access, upgrading security and repairing faults, with guidance on costs.

Need help with your locks?

Our guides provide a starting point, but an individual door may need an assessment. Stride Lock & Key helps homeowners in Horley, Reigate, Redhill, Crawley and surrounding areas discuss suitable repairs and improvements.

• Emergency Locksmith
  Discuss an urgent lockout or a door that will not secure.
• Lock Repairs
  Arrange assessment of stiff, damaged or unreliable hardware.
• Lock Upgrades
  Consider suitable improvements to your existing locks.
• Home Security Check
  Review concerns and prioritise practical work around the home.
• Areas We Cover
  Check the locations served by Stride Lock & Key.

Cannot find the answer you need? Contact Stride Lock & Key with your door details and any symptoms.