Brentwood, Los Angeles 90049White Flat Roof in Los Angeles 90049View project New Flat Roof Installation in Los Angeles & Orange County with FlatGuard®
A new flat roof for your ADU, addition or garage.
Flat roof installation for an ADU, addition, garage or patio cover. A new modified bitumen or other low-slope roof, with the slope, drains and tie-ins planned before the first layer goes down. Part of our FlatGuard® Roof System, across Los Angeles and Orange County. Request an estimate to get started.
- Free roof evaluation
- Written price before any work
- 10-year workmanship warranty (call for details)
- CSLB #1061942
- Plans reviewed early
- Slope and drains set
- Edges and flashings built
- Tie-in to the main roof
- Photos of what gets hidden
A new flat roof is the one chance to get the slope right.
Certified with the manufacturers we install
280 Google reviews
Accredited, A+ rating
Find us on Yelp
Flat roof installation
A new flat roof is the one chance to get the slope right.
Backyard ADUs, room additions, new garages, solid patio covers and contemporary homes all grow with low-slope roofs. With no old roof to work around, the slope, the drains and the tie-ins can be planned properly, and they’re far easier to decide on paper than to correct later.
How we work
How we install a new flat roof
See the plans early.
We review your plans or visit the site, because the slope is usually built into the framing. You’ll know where water will go before the roof exists, so you’re not dealing with ponding after move-in.
- Slope and drainage direction
- Drain and scupper locations
- Walls, parapets and tie-ins
Matched to what the roof carries.
Once the deck is ready, the edges and the flashings at drains, scuppers, walls and curbs are built, and the modified bitumen or other low-slope system goes on, matched to how the roof drains and whether it carries an HVAC unit, a skylight or nothing at all.
A tie-in that sends water away.
Where the new roof meets an existing tile or shingle roof, the transition is flashed for how water actually flows across it, so it runs away from the joint, not into it.
- Sealed laps across the whole roof
- Tie-ins to tile or shingle roofs
- Vents, skylights and HVAC curbs
A record of what’s hidden.
The scope names the system, flashings and drainage details with the price before work starts, and we photograph the base layers, flashings and tie-ins as they go on. Already have a worn flat roof? Flat roof replacement is the service you’re looking for.
Featured projects
Recent roofing projects
See all projectsBrentwood, Los Angeles 90049White Flat Roof in Los Angeles 90049View project 
Hollywood Hills West, Los Angeles 90046Round Flat Roof Replacement in Hollywood Hills West 90046View project 
Mid-Wilshire, Los Angeles 90019Tile & Flat Roofing at a Multi-Family Building in Mid-Wilshire 90019View project Client stories
Roofing reviews from the people we work for
Reviews from the people we roof for, on 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 · 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 · 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 · 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 · 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
We 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 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 · GoogleQuality 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 · 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 · Google
Flat roof installation near you
QRS offers flat roof installation 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 you are, it starts the same way: a roofer looks at the roof, you get photos of what we find, and a written scope and price comes before any work.
Flat roof installation questions, answered
Straight answers about flat roof installation.
Do you pull the permits?
Yes. When your roofing project needs a building permit, we pull it for you.
When should I bring a roofer into my ADU or addition project?
Ideally while the plans are still being finalized. That’s when slope, drain locations and roof-to-wall details are easy to adjust. If framing is already underway, we can still look at it before any roofing goes on.
Can a new flat roof tie into my existing tile or shingle roof?
Yes. The transition needs careful flashing so water coming off the pitched roof lands on the flat roof without getting under either one. We plan that detail in your written scope, whether the main house has a tile roof or a shingle roof.
Do you install flat roofs on patio covers?
Yes, on solid patio covers framed and sheathed to take a roof. We check the slope and how the cover meets the house, because the joint at the wall is a common leak point on patio roofs.
Can you coordinate with my contractor?
Yes. We partner with contractors and can coordinate directly with yours on scheduling and roofing details. Learn more about our contractor partnerships.
How is the price for a new flat roof worked out?
It depends on the roof’s size, the system, the drainage details and how the roof ties into the rest of the house. Each of those items is spelled out in your written scope, with the price, before work on the roof begins. To get the process moving, request an estimate and tell us about your project.
Start here
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 flat roof installation
Tell us what’s going on with your roof. A roofer, not a salesperson, looks at it and gives you a clear next step on flat roof installation, with a written scope and price.
- CSLB licensed, bonded & insured
- 10-year workmanship warranty (call for details)
- Google customer reviews
