Security Latest / Door and lock guide directory
A key that will not turn, a door that will not latch and a decision to replace an entrance need different guides. Use this directory to find the right starting point before buying another lock or making changes to the frame.
The articles below cover diagnosis, compatible repairs and longer-term upgrades. They distinguish an ordinary hardware problem from a complete-door decision, and a convenience feature from the physical protection supporting it.
Start with the symptom you can observe
The door or lock is not working
- Door locks when open but not when closedLook at alignment, hinges, seals and receiving hardware.
- Key will not turn in the lockSeparate key condition, cylinder trouble and pressure from the door.
- Handle has broken from insideFind the guide for safe exit, diagnosis and an authorized repair.
- Lock maintenance and lubricationIdentify the component and its maintenance requirements rather than using one product everywhere.
I have lost access
- Locked out of the houseReview legitimate assistance, locksmith questions and ways to avoid unnecessary damage.
- Lock jams when you are outsideDescribe the fault before forcing the key or dismantling anything.
- Door has a lock but the key is missingCompare authorized inside controls, spare access and lasting repairs.
- Door has no working lockSeparate occupied-room privacy from securing an empty property.
If someone is trapped or there is an immediate threat, use the appropriate emergency or building-response service. The articles are for planning, diagnosis and authorized work, not a substitute for urgent assistance.
Choose an upgrade that addresses the actual weakness
Use the replacement guide for a whole entrance and the reinforcement guides for a sound existing assembly. The comparison articles explain the decisions before the installation pages address particular hardware.
- Choosing a secure front doorCompare the leaf, frame, glazing, locking and installation as a complete purchase.
- Reinforcing a door against forced entryAssess the frame, strike, hinges and supporting material together.
- Rekey or replace the locks?Consider moving house, lost keys, worn components and changing access.
- Deadbolt versus latch lockUnderstand the mechanisms and their different roles.
- Alternatives to a door chainCompare visitor screening with limited-opening and locking functions.
- Where door jammers help—and where they do notCheck opening direction, fit, supporting surfaces and release.
Smart locks and keypads
Before buying
- Are smart locks worth the cost?Compare the recurring access problem with simpler alternatives.
- Smart-lock security and backup accessAssess hardware, controlling accounts and permissions separately.
- Retrofit locks that preserve the existing keyCheck door, cylinder and interior-clearance compatibility.
- Keypad locks and everyday accessConsider code management, battery maintenance and the actual locking hardware.
After installation
- Smart-lock battery draining quicklyCompare mechanical resistance, power and connectivity before resetting.
- What works without Wi-Fi?Separate local entry, remote commands and backup methods.
- The sensor still says the door is openCheck the separate sensor or alarm status rather than assuming the bolt has failed.
Use the guide for your door’s construction
Choose a page matching the existing entrance. A uPVC multipoint mechanism, a sliding patio panel and an outward-opening service door should not be treated as the same installation.
Exterior and patio doors
- uPVC doors and multipoint locksReview cylinders, handles, alignment and compatible upgrades.
- French-door securityAssess the active and passive leaves, meeting point and glazing.
- Sliding-glass-door securityCheck rollers, primary locking and appropriate secondary hardware.
- French doors versus sliding doorsCompare complete replacement options rather than relying on appearance.
Other openings and layouts
- Inspect an existing outswing doorStart with normal operation, hinges, frame support and maintenance.
- Choose outswing-compatible hardwareUse the fitting checklist before ordering a guard, hinge or restraint.
- Sliding barn-door locksSeparate interior privacy from exterior security requirements.
- Garage doors and connecting entrancesReview the vehicle door, controls, side entrance and connection to the home.
Installation guides: match the existing preparation
These guides start with compatibility and the work actually required. Use the correct product instructions and obtain qualified help where the construction, required ratings or preparation are uncertain.
- Fit a compatible security strike plateCheck receiving depth, support and the completed bolt travel.
- Replace a deadbolt on a prepared doorFor an existing suitable opening—not creating a new hole.
- Add a deadbolt where no hole existsAssess construction and required preparation before cutting.
- Deadbolts in prepared steel doorsCheck the reinforcement and fittings for that assembly.
- Unprepared metal doorsReview the additional preparation and supporting-work questions.
- Fit a chain or swing-bar guardCheck support, opening clearance and normal release.
Key storage, lockers and the surrounding property
- Outdoor key safes and lockboxesCompare certification, mounting and who can retrieve the keys.
- Locker-lock typesFind appropriate hardware for personal lockers or managed facilities.
- Shed doors, hasps and padlocksCheck whether the supporting building is suitable for the proposed hardware.
- Apartment entrances and shared accessDistinguish resident improvements from building-management responsibilities.
- Accessible windows and adjacent openingsContinue the inspection beyond the main door.
Keep the decision and the repair separate
Use the home-security checklist to record the actual defect, responsible person and completion check. Our editorial policy explains the distinction between researched guidance and claims of personal product testing.