Flat Roof Repair in Los Angeles & Orange County

Trace the leak to its source and get back to dry.

Flat roof repair services that trace each leak to the source. An open seam, a blister, a split or failed flashing: we find it and fix it. A ceiling stain can sit far from the actual leak, so we check the whole area. Photos of the problem and the fix, across Los Angeles County and Orange County.

  • Free roof evaluation
  • Written price before any work
  • 10-year workmanship warranty (call for details)
  • CSLB #1061942
  1. Start at the ceiling stain
  2. Check the whole area
  3. Find the opening, photograph it
  4. Repair it to match your roof

Water on a flat roof moves slowly and finds every weakness.

Certified with the manufacturers we install

  • Owens Corning
  • IKO
  • GAF
  • CertainTeed Master Craftsman
  • Polyglass Premio Pro

Permits Handled

We pull the building permits

280 Google Reviews

Homes & businesses

10-Year

Workmanship warranty, call for details

Roofer-Led

Inspections and estimates

Flat roof repair

Water on a flat roof moves slowly and finds every weakness.

It can travel under the membrane before it drips, so the stain on your ceiling may sit far from the opening. That’s why we check the whole area around a leak, not just the spot above the stain. As flat roofing experts in Los Angeles, we handle flat roof repairs on homes, garages, patio covers and additions across Los Angeles County and Orange County, from one open seam to a full flat roof leak repair.

How we work

How we repair a flat roof

  1. Check the whole area. Find the opening.

    A roofer works around and upslope of the leak until the cause is found, and photographs it before anything is fixed.

    • Seams, laps and blisters
    • Parapet caps and wall flashings
    • Drains, scuppers and equipment curbs
    • Vents and skylights
  2. Repair with what your roof is made of.

    Damaged membrane is cut out, open laps are resealed and failed flashings are rebuilt, with materials that work with your existing roof system.

  3. Open drains. A repair that stays dry.

    We make sure nearby drains and scuppers are clear, because a repair lasts longer when water isn’t standing on it.

  4. Patch or replace, said plainly.

    A targeted repair makes sense when the rest of the roof is in reasonable shape. If the membrane is worn out across the surface, we’ll tell you that more patching only delays a flat roof replacement. Either way, the scope and price are in writing before we start, and you get photos of the finished repair.

Completed white membrane flat roof

Where leaks start

Where flat roofs leak

Most leaks begin at details, not in the middle of an intact membrane: the drains, seams, flashings and everything that passes through the roof.

Tap a number to see where this kind of roof tends to leak.
Read: commercial roof leak repair

Client stories

Roofing reviews from the people we work for

Reviews from the people we roof for, on Google.

  • I 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 · 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 · 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 · Google
  • 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
    Emilee Crowley3 months ago · Google
  • Tony 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
  • 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 · Google
  • Tony 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 · Google
  • We 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
  • We 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

Flat roof repair near you

QRS offers flat roof repair 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 repair questions, answered

Straight answers about flat roof repair.

Why does my flat roof leak in big storms but not light rain?

Light rain may drain away before it finds a weak spot, but a heavy storm deepens the water on the roof and pushes it into open laps, cracked flashings and overflowing scuppers. Water that’s still ponding after the storm is a clue that drainage is part of the problem. A flat roof inspection shows you where the water is getting in.

Can you fix blisters on a flat roof?

Yes. Small blisters that are still intact are often left alone and watched, while cracked or growing blisters are cut out and patched. We’ll show you which ones need attention and explain why.

Are you a flat roof repair contractor in Los Angeles?

Yes. QRS is a licensed roofing contractor, and our flat roof repair service covers Los Angeles, the rest of Los Angeles County and Orange County. A roofer, not a salesperson, finds the leak, photographs it and gives you a written scope and price before any flat roof repairs start.

The leak is near a wall. Is it the roof or the wall?

It can be either. On roofs with parapets, water often gets in through cracked parapet caps, gaps in the stucco or failed wall flashings rather than the roof surface itself. We check the parapet from cap to base and tell you exactly where the water is entering.

Do you repair flat roofs on garages, patio covers and additions?

Yes. These smaller low-slope roofs leak for the same reasons as the main roof, usually at the seams, the drainage or the joint where they meet the house. They get the same photo-documented approach as any other repair.

What if you find more than one problem?

We photograph each one and list it in your written scope, so you can decide what to fix now. If the roof is sound overall but has a handful of small issues, a flat roof tune-up may cover them in one visit.

Start here

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Get a Straight Answer on flat roof repair

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 repair, with a written scope and price.

  • CSLB licensed, bonded & insured
  • 10-year workmanship warranty (call for details)
  • Google customer reviews