Lock and key resources
Plain advice on choosing locks, understanding repair work and knowing when to call a locksmith. Written for homes, drivers and businesses across the Las Vegas valley.
- Rekeying, deadbolts and door hardware
- Vehicle keys, fobs and lockouts
- Business key control and access systems
Answered day and night
A Cairn dispatcher answers every day of the year.
Licensed and insured
Employee technicians carry photo ID and a police work card.
Your price comes first
Approve the written price on a tablet before work begins.
Start with these three decisions
Learn when to rekey or replace home locks, what happens when you lose your only car key, and how a master key system controls access across business doors.
Rekey or replace: how to decide for your home
Learn when an existing cylinder can be rekeyed, when worn hardware needs replacing and why rekeying does not improve a lock's grade.
Read the guideLost your only car key? Here is what happens next
See which vehicle details and ownership documents a locksmith needs, and why replacing your only programmed key takes more work than adding a spare.
Read the guideMaster key systems explained for business owners
Understand individual keys, sub-masters and master keys, and how a business can assign access without giving every employee the same key.
Read the guide
Practical guides for locks and keys
Browse by the problem at hand, from a door that sticks in summer to an employee key that needs retiring. Each guide focuses on what to check and what to ask.
Locked out of your house: what to do first
Find out what information to gather, where to wait safely and why forcing a locked door can create more repair work.
Bought a home in Las Vegas? Rekey it before you move in
Understand construction keys, closing-day rekeying and how to establish your own set of house keys after moving in.
How to read a locksmith estimate
Learn how the service call fee, labor, parts and after-hours charges should appear in a written locksmith price.
How to choose a locksmith you can verify
Know how to check licensing, identification, business details and the written scope before authorizing work.
What a locksmith asks before opening your door
See which documents establish your connection to a home or business and how identification is handled when it is locked inside.
Deadbolt grades explained: Grade 1, 2 and 3
Compare ANSI/BHMA Grades 1, 2 and 3 and understand why a higher-grade deadbolt may suit a heavily used entry.
Why your deadbolt sticks in the summer heat
Learn how expanding metal, a misaligned strike and a dragging door can keep a deadbolt from moving freely.
Smart locks in desert heat: batteries, sun and Wi-Fi
See how direct sun, heat and door alignment affect keypad finishes, battery life and motor operation.
Keypad, Bluetooth or Wi-Fi: choosing a smart lock
Compare code entry, Bluetooth control and Wi-Fi connectivity based on how you plan to operate the lock.
High-security locks: what you are paying for
Understand higher-security cylinders, controlled key blanks and the difference between stronger hardware and key-copy restrictions.
Transponder keys and key fobs explained
Learn why a chip key needs vehicle programming and how remote head keys and proximity fobs differ from plain metal keys.
Why a spare car key costs less than a lost one
Compare adding a programmed key while one still works with replacing every lost key on a supported vehicle.
Car lockout safety in Las Vegas heat
Know when to call 911, what to tell the dispatcher and why vehicle lockouts need special care in extreme heat.
Broken key in the lock: what to do and what to leave alone
Learn what to avoid when a key snaps in a cylinder and why the condition of the lock determines the repair.
Restricted keys: how to stop unauthorized copies
See how controlled key blanks, authorized requests and issue records help businesses manage additional copies.
Rekeying after an employee leaves
Understand when to rekey affected doors, review issued keys and update access permissions after a staff departure.
Panic bars and exit devices: what owners should know
Recognize sticking exit devices and understand why fire-rated door hardware needs particular care before replacement.
Door closers: five signs yours needs attention
Identify leaking oil, slamming, poor latching, uneven closing and a door that fails to shut fully.
Keypad or card access for a small business
Learn when one-door code entry is sufficient and when card or fob management across several doors makes more sense.
Turnover rekeying for landlords and property managers
See how unit rekeying, authorization records and maintenance master keys fit into a repeatable resident turnover process.
Smart locks for vacation rentals: guests, cleaners and codes
Plan separate guest and cleaner access, code changes between stays and lock maintenance for a rental property.
Home safe basics: fire ratings and burglary ratings
A fire rating measures heat protection, while a security rating such as RSC or TL-15 describes resistance to attack.
Forgot your safe combination? How a locksmith helps
Learn how a safe technician assesses a failed lock or lost combination and why the opening price follows inspection.
Securing a sliding glass door
Review sliding door locks, secondary hardware and alignment issues that can prevent a panel from securing properly.
Mailbox locks: yours or the Postal Service?
Find out which private mailbox locks a locksmith can replace and when a USPS-owned cluster box needs Postal Service attention.
After a break-in: first steps for your locks and doors
Learn how to document damaged hardware, arrange an authorized lock replacement and assess the strike and frame afterward.
A yearly lock and door check for Las Vegas homes
Use a practical inspection list for keys, latches, deadbolts, gates and sun-exposed hardware before small problems become repairs.
Find guides for your type of property
Guides are grouped by homes for lock and door decisions, businesses for key control and hardware, and vehicles and safes for key programming, ownership checks and lock service.
Put the guidance to work on your locks
Cairn serves the Las Vegas valley with mobile locksmith service. Call for an urgent lock problem, or use the request form to describe planned repair or installation work.