Westminster 92683Commercial Flat Roof Replacement in Westminster 92683View project Office Building Roofing in Los Angeles & Orange County
Protect your tenants and keep your office running.
Office building roofing that keeps your tenants working. Leak repairs to full replacement, planned around the building. Every project starts with a roof survey that traces leaks to the source, from rooftop HVAC curbs to parapets and drains. Photo-documented findings for owners and property management clients, across Los Angeles and Orange County.
- Roofer-led roof survey
- Written scope and price before any work
- Permits pulled
- CSLB #1061942
On an office roof, the first sign is usually a stained ceiling tile.
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Office building roofing
On an office roof, the first sign is usually a stained ceiling tile.
Most office roofs are low-slope and crowded with HVAC units, exhaust fans, conduit and roof hatches, often ringed by parapet walls capped with coping. Each of those details is a place water can get in, and the stain shows up in a top-floor suite.
How we work
How we roof an office building
Follow the leak from the suite to the source.
A roofer checks the areas your tenants have reported and works back to where water enters, whether that’s a failed curb flashing, a split seam or a drain backing up, and photographs it.
- Curbs and flashings at HVAC units
- Drains, scuppers and low spots
- Parapet walls and coping
Findings ownership can follow.
Is it worth repairing, or is replacement coming? What needs attention this year, and what can wait? Photos and plain-English findings answer that in a form you can take to ownership or keep with your building records.
A work plan built around tenants.
When larger work is due, the written scope and price come with a plan for roof access and material hoisting, noisy work and quiet hours, staging and tenant updates, and crews work area by area with entrances, walkways and loading areas kept clear.
Closeout, then ongoing care.
We walk the finished roof with your property manager or building engineer, share closeout photos and go over our 10-year workmanship warranty (call for details). Scheduled checks then keep drains clear and catch worn flashings early, with photos you can compare visit to visit.

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Westminster 92683Commercial Flat Roof Replacement in Westminster 92683View project Client stories
Roofing reviews from the people we work for
Reviews from the people we roof for, on Google.
Quality roofing specialist exceeded my expectations from start to finish. The crew showed up on time, explained everything clearly, and the quality of the work was outstanding. They were professional, honest, and left the property spotless when the job was done. It’s hard to find reliable contractor in LA, but these guys definitely earned my trust. I highly recommend them to anyone looking for quality roofing work. Five stars all the way!
Samuel Mcilwee2 months ago · GoogleTony was very responsive when I called. The entire process was faster than I expected. With his continuous supervision the whole project went so smoothly and professionally, the place was cleaned up completely.
I have a beautiful roof now :)Liron Yosef3 weeks ago · GoogleWe trusted Tony for a full roof replacement. They showed up early each day, worked efficiently, and kept us updated. I appreciated the patience in answering our concerns about materials and warranty. The new roof looks sharp and already makes the home feel more energy-efficient.
Angel4 months ago · GoogleWe had an awesome experience with the crew of Quality Roofing. I called around to get quotes for a roof replacement and they gave me much better quote than the other roofing companies. Definitely within the budget and did a perfect job. No mess, they cleaned everything at the end
Emilee Crowley3 months ago · GoogleTony went above and beyond my expectations!! He was available immediately to inspect the roof and gave a great deal. He definitely worked with our budget. I highly recommend Quality Roofing for any roof repair you may need:)
Cynthia Pina5 months ago · Google
I was looking to replace my shingles roof in Encino and contacted a few roofing companies in the neighborhood. Out of four roofers, Quality Roofing Specialist was the only one that worked with my budget as well as my schedule. Their work was fantastic, and we love the outcome. They exceeded my expectations. I will definitely recommend to friends.
Jose Linareza month ago · GoogleI was recommended this roofing company by a friend, and I’m really glad I went with them. I had a problem with water leaking into my attic from the flashing around the chimney, and the team was very helpful from the start. Tony was the roofer working with me, and he was always professional and friendly. He took care of resealing the flashing and chimney, which made the leak much better right away. He kept in touch with me after the work, and now we’re working on sealing the chimney even more to make sure everything is perfect. I feel confident that the team will get everything fixed up right. Based on my experience so far, I’d definitely give them five stars. Thanks to everyone there for their hard work!
Kelsey Breadmont4 months ago · GoogleWe had a great experience with Quality Roofing Specialist. Tony, the project manager, was awesome to work with. He kept us updated, answered all our questions, and made sure everything went smoothly. The crew did a great job, and the final result looks amazing. I would definitely recommend Tony and the whole team
Stella Ink LAa month ago · GoogleWe recently had our roof replaced by Quality Roofing Specialists, and the entire experience was excellent. The crew arrived on time every day, kept the property clean, and finished the project exactly as promised. The quality of the workmanship is outstanding, and the new roof looks amazing. If you’re looking for a reliable roofing contractor, I highly recommend this company.
Noam Nahori2 months ago · Google
Office building roofing near you
QRS offers office building roofing across Los Angeles County, Orange County, Riverside County, San Bernardino County and Santa Clara County, from our offices in West Hollywood, Woodland Hills, Vernon and San Jose. Not sure we reach you? Check your ZIP code on our service areas page, or call (310) 340-1643.
Wherever the building is, it starts the same way: a roofer walks the roof, you get photos of what we find, and a written scope and price comes before any work.
Office building roofing questions, answered
Straight answers about office building roofing.
Why does our office roof leak only in heavy rain?
Heavy rain tests drainage. A partly clogged drain or scupper, a low spot that holds water, or worn flashing at a parapet or curb can stay dry in a light shower and leak once water backs up. A roof survey pinpoints which one it is.
What does a roof survey cover on an office building?
A roofer walks the full roof and checks every HVAC curb, drain, scupper, parapet and roof hatch, along with the seams and surface in between. We photograph what we find, explain it in plain English and tell you what each area needs next.
Do you work on rooftop HVAC units?
We handle the roofing around them: curbs, flashings and penetrations. Servicing the units themselves is a job for your HVAC contractor, and we’re glad to coordinate with them when roof work touches the equipment.
Do you also roof apartment and condo buildings?
Yes. Our HOA & multi-family roofing service handles residential properties with the same survey-first approach. If you manage both office and residential buildings, we can cover the whole portfolio.
Do you serve office buildings outside Los Angeles?
Yes. We work across LA County and Orange County, from Burbank and Glendale to Irvine and Santa Ana. See our service area for every city we cover.
Tell us what you need.
Two minutes. A clear next step. No pressure.
Prefer to answer a few questions instead? Use the step-by-step form
Get a Straight Answer on office building roofing
Tell us about the building. A roofer, not a salesperson, walks the roof and gives you a clear next step on office building roofing, with a written scope and price.
- CSLB licensed, bonded & insured
- 10-year workmanship warranty (call for details)
- Google customer reviews









