New Flat Roof Installation in Los Angeles & Orange County — A new flat roof for your ADU, addition or garage.
- Free roof evaluation
- Written price before any work
- 10-year workmanship warranty (call for details)
- CSLB #1061942
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.
Recent flat roof projects
Brentwood, Los Angeles 90049
White Flat Roof
White flat roof in Los Angeles 90049: a bright, reflective flat roof on a mid-century home, with every skylight, vent and the chimney detailed.
Hollywood Hills West, Los Angeles 90046
Round Flat Roof Replacement
Flat roof replacement in Hollywood Hills West 90046: a torch-down roof with a white reflective cap sheet, custom-cut for a round, 12-sided home.
Mid-Wilshire, Los Angeles 90019
Tile & Flat Roofing at a Multi-Family Building
A multi-family building in Mid-Wilshire with new clay tile on its pitched roof and a reflective flat roof system over the rooftop terrace.
What people say after the job
269 reviews from the people we roof for, on Google.
Jose Linarez
Read it on Google · a month ago“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.”
Angel
Read it on Google · 4 months ago“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.”
Emilee Crowley
Read it on Google · 3 months ago“We 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”
Frequently Asked Questions
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.
Show 2 more questions
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.
Tell us what you need.
Two minutes. A clear next step. No pressure.
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