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Crenshaw Lock

Door Closer Repair in Monrovia · 24/7 mobile

Door Closer Repair in Monrovia, California

Crenshaw Lock Company provides mobile door closer repair, adjustment and replacement for commercial doors throughout Monrovia, California. We are available 24/7 and come to your shop, restaurant or office. For a door that slams, drifts open or won't latch, call (323) 997-8867.

  • Mobile to your Monrovia location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Hydraulic door closer mounted at the top of a commercial door
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A door closer is easy to ignore until it fails. Then the door slams on a customer, hangs open overnight, or stops short of the latch so the lock never engages. On a commercial door that is more than an annoyance. An unlatched door is an open invitation, and a slamming one can hurt someone or wear out the frame. Our repair work covers hydraulic closers on storefront, office and back-of-house doors.

Monrovia has a mix of building types that puts different demands on closers. Along Myrtle Avenue in Old Town, small shops and restaurants swing their doors all day, often in older frames that have shifted over decades. Toward Foothill Boulevard and Huntington Drive, offices and service businesses depend on doors that close and latch on their own. Wind funneling down from the foothills can also push on exterior doors, so a closer that was set loosely years ago may no longer hold up.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are fully mobile, with no storefront to visit. We bring the tools to your door, diagnose what is actually wrong, and tell you plainly whether a quick adjustment will do or whether the closer should be replaced.

How it works in Monrovia

  1. 1

    Call and describe the door

    Phone us at (323) 997-8867 any hour and tell us what the door is doing: slamming, closing too slowly, not latching, leaking oil, or hanging open. Mention whether it is an interior, exterior, glass or wood door, and we will plan what to bring.

  2. 2

    We come to you

    Because we are fully mobile, a technician drives to your Monrovia location with common closer types and mounting hardware. There is no shop drop-off, and you do not need to take the door off or leave your business unattended.

  3. 3

    Inspect the closer, door and frame

    A closer is often blamed for problems that come from elsewhere. We check for oil leaks, a bent arm, loose mounting screws, a sagging hinge, a warped door, and a latch that binds. Finding the real cause keeps you from paying for a part you did not need.

  4. 4

    Adjust, repair or replace

    If the closer is sound, we tune the sweep speed, latch speed and backcheck so the door closes smoothly and latches firmly. If it is leaking or worn out, we recommend a replacement sized and rated for the door and install it on the existing mounting pattern where possible.

  5. 5

    Test and walk through the result

    We cycle the door several times, confirm it latches without a slam, and check that it opens with reasonable effort. We show you the adjustment points so your staff understand what was changed.

Need door closer repair in Monrovia?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • Whether the closer only needs adjustment or has failed internally and needs replacement.
  • The type and size of closer the door requires, including door weight, width and whether it is interior or exterior.
  • Whether the mounting holes and bracket match the old unit or the door needs new drilling or a different arm configuration.
  • Underlying problems found during inspection, such as sagging hinges, a misaligned strike or a warped door.
  • The number of doors being serviced during one visit.
  • The time of day or night, since we work around the clock and after-hours calls are handled differently from scheduled visits.

Why Monrovia chooses us

  • Fully mobile service, so repairs happen at your door without moving the door or closing the business.
  • Open since 1987, with decades of experience on older frames in places like Old Town Monrovia.
  • We diagnose the whole door, not just the closer, so you are not sold parts that will not fix the problem.
  • Closer work and lock work in one visit. If the latch needs rekeying or the lock is worn, we handle that too.
  • Straight answers on adjust versus replace, with the reasoning explained.
  • Available 24/7, which matters when a door will not latch and the building has to be secured tonight.

Door Closer Repair across Monrovia

Monrovia's business districts are close-knit, and the doors tell the story. In Old Town Monrovia, the shops and restaurants along Myrtle Avenue near Library Park and the Aztec Hotel often sit in older buildings with doors that have been rehung and repainted over the years. A door that has settled slightly in its frame puts extra strain on a closer, and we see that wear often. Heavy foot traffic from the Metro A Line station and weekend visitors means those doors cycle constantly.

Beyond Old Town, businesses in Mayflower Village and along Huntington Drive and Foothill Boulevard depend on closers to keep exterior and back doors secure. In North Monrovia, closer to the foothills and Monrovia Canyon Park, wind and sun exposure can dry out seals and change how a closer behaves from season to season. We serve addresses throughout ZIP codes 91016 and 91017, reaching you from I-210, Mountain Avenue or wherever the day's work has us.

If your closer is failing, call (323) 997-8867. We will talk through the symptoms and come out to take a look, whether you run a Myrtle Avenue restaurant or an office off Huntington Drive.

Locked out or need a locksmith now?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

Other Monrovia locksmith services

See all of our Monrovia services, or our citywide door closer repair page.

Door Closer Repair in Monrovia — FAQs

How do I know if my door closer needs repair or replacement?
Oil leaking from the body, a door that slams or will not latch no matter how it is adjusted, and a visibly bent arm usually mean replacement. Simple speed problems are often fixable with adjustment. Call (323) 997-8867 and we can help sort it out.
Can you fix a door closer in Monrovia after hours?
Yes. We are available 24/7 and fully mobile. If a door will not latch and you need the building secured, call (323) 997-8867 at any hour.
Why does my door slam shut?
The sweep or latch speed valve is usually set too fast, or the closer is losing hydraulic fluid. Wind pressure on an exterior door can also contribute. Adjusting the valves often solves it if the unit is healthy.
Why does my door not latch completely?
Often the latch speed is set too slow, or the door and frame are out of alignment. Sagging hinges and a misplaced strike plate are common culprits in older Old Town buildings. We check all of these.
Will a new closer fit my existing door?
In many cases yes, because we can match the mounting pattern of the old unit. Door width, weight and exposure determine the right size. If the old holes do not line up, we explain the options before we start.
Do you service glass storefront doors?
Yes. We work on closers for many commercial door types, including aluminum storefront doors common on Myrtle Avenue. Tell us what you have when you call (323) 997-8867.
Do I need to be on site during the repair?
Someone authorized should be there to give us access to the door. We are mobile, so the repair is done where the door is, and we will review the result with you.
How is the cost determined?
It depends on whether the closer needs adjustment or replacement, the type of unit, any problems with the door or frame, how many doors are involved, and the time of the call. We explain what applies to your door before work begins.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7