Contra Costa County, California
Hollow Metal Doors & Frames in Concord, CA
Commercial buildings, schools, healthcare, industrial, and multifamily properties in Concord call Guardian Door LLC for hollow metal door and frame installation, including fire-rated openings and full hardware sets. Send the address and the symptoms and we’ll confirm availability.
- Licensed & insured
- Fast response
- 5.0 on Google
California CSLB #1025448
Verify on the CSLB siteFully insured
Certificate of insurance on request
Commercial & industrial only
No residential garage doors
Based in Sacramento
Northern California service area
Your Hollow Metal Doors Team in Concord
Guardian Door LLC provides hollow metal door and frame installation, including fire-rated openings and full hardware sets for Concord and nearby Contra Costa County communities. We reach Concord from Sacramento — about 51 miles southwest. It’s one of the Contra Costa County locations we cover, alongside Pleasant Hill, Walnut Creek, and Martinez. The complete breakdown is in our hollow metal doors guide.
- Hinges, closers, exit devices, and locksets
- Gasketing, coordinators, and thresholds
- Door-only replacement in sound existing frames
- Security and exterior steel doors
- Welded and knock-down hollow metal frames
- Fire-rated door and frame assemblies
Hollow metal openings we evaluate in Concord
- We start by checking the frame: whether it is plumb and sound, whether its label matches the rating the opening needs, and whether the hardware preps line up.
- That tells us if the existing frame can stay or needs replacement.
- Stock sizes and common ratings can arrive quickly; custom sizes, welded frames, and special finishes take longer.
- Lead time is part of the quote.
Doors, frames, and hardware we install
- Hollow metal doors, welded and knock-down frames, and the hardware that goes with them — hinges, closers, exit devices, locksets, coordinators, and gasketing — installed to template.
- On a rated opening the hardware is part of what makes the assembly compliant, so we specify and install it as a set.
Fire-rated openings and local requirements
- Requirements for a hollow metal opening depend on the specific opening — its fire rating, egress role, accessibility function, and the occupancy of the building.
- They are set by the building and fire authority with jurisdiction over your address, which in Concord can be a city department or the county, depending on where the property sits.
- We confirm what applies to your opening before recommending work, and we tell you when a component repair is not the same as a full compliance inspection of the assembly.
Our 5-Step Hollow Metal Doors Process
- In Concord, our work follows 5 service-specific steps, from opening survey through code verification.
- The detailed process below explains what each stage covers so you know what to expect before requesting a visit.
Recent Hollow Metal Doors Projects
Photos from Guardian Door job sites across Northern California. Explore examples of the work we offer in Concord, CA. Project locations are labeled where available.
How Hollow Metal Doors Works in Concord, CA
- 1
Opening survey
We field-measure the opening, confirm wall type and handing, and identify the required fire rating and hardware set from the existing label and use of the space.
- 2
Specification and quote
Door gauge, frame type, rating, finish, and the complete hardware schedule are quoted in writing before ordering.
- 3
Fabrication and delivery
Doors and frames are ordered with factory prep and labels for the specified rating and hardware.
- 4
Installation
Frames are set plumb, square, and anchored to the wall type; doors are hung and the full hardware set installed to template.
- 5
Code verification
Rated openings are checked for self-closing, positive latching, correct clearances, intact labels, and required gasketing.
Hollow Metal Doors in Concord, CA — FAQs
Is Concord inside your hollow metal doors service area?
Yes. Concord is inside our Northern California service area, and we dispatch to Concord and nearby Contra Costa County communities from our Sacramento base. Scheduling depends on the job, so send the address and the problem and we’ll confirm availability.
What should I have ready before the visit?
Opening location, size, and handing (or we field-measure); Required fire rating if known, or a photo of the existing frame label; Wall construction — stud, masonry, or existing frame reuse; Hardware needs — panic device, lockset, closer, card reader prep; Whether the opening must stay secured during the swap.
Do you install the hardware too?
Yes — hinges, continuous hinges, closers, exit devices, locksets, thresholds, coordinators, and gasketing, installed to template. On rated openings the hardware is part of what makes the assembly compliant, so it isn't something to leave to another trade.
How far is Concord from your base?
We dispatch from Sacramento. Concord is roughly 51 miles southwest of our base, inside our 100-mile service radius.
What is a hollow metal door?
A hollow metal door is a steel door built from face sheets over an internal core, hung in a steel frame. It's the standard for commercial back-of-house, stairwell, mechanical, and exterior service openings because it takes abuse and is available in fire-rated assemblies.
Can you replace just the door and keep the existing frame?
Often yes, when the frame is plumb, sound, and its label is intact and matches the required rating. We verify frame condition and hardware prep locations first — a new door hung in a racked or unrated frame doesn't give you a compliant opening.
Explore more
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