Flat Roof Repair
QRS handles flat roof repair across Los Angeles and Orange County, tracing each leak back to where water gets in and fixing the open seam, blister, split or failed flashing behind it. A ceiling stain can sit far from the actual leak, so we check the whole area and show you photos of the problem and the fix.
Overview
Water on a flat roof moves slowly and finds every weakness. The usual culprits are a seam or lap that has opened, a blister that has cracked, a split in the membrane, or flashing that has pulled away at a parapet wall, HVAC curb, vent or skylight. Clogged drains and scuppers make everything worse by letting water stand where it was never meant to. Because water can travel under the membrane before it drips, we check the whole area around a leak, not just the spot above the stain.
A targeted repair makes sense when the rest of the roof is still in reasonable shape. If the membrane is worn out across the surface, we’ll tell you plainly that more patching would only delay a flat roof replacement. Either way, you get a written scope and price before we start, along with photos of the damage and, afterward, the finished repair. If a storm just came through and you’re seeing new stains, book a free roof evaluation and we’ll show you exactly what the rain found.
Compare All Roof Repair Options →Our Process
How we repair a flat roof
Trace the leak
We inspect the roof around and upslope of the leak, checking seams, flashings, drains and penetrations until we find where water is getting in.
- Seams, laps and blisters
- Parapet caps and wall flashings
- Drains, scuppers and curbs
Photos and a repair scope
You see photos of the problem and get a written scope and price for the repair before any work begins.
Repair the problem area
We remove damaged membrane, reseal open laps and rebuild failed flashings, using materials compatible with your existing roof system.
- Cracked blisters and splits patched
- Open laps and seams resealed
- Loose or failed flashings rebuilt
Check the drainage path
We make sure nearby drains and scuppers are open, because a repair holds up better when water isn’t sitting on it.
Photos of the finished repair
You get photos of the completed work and a plain-English rundown of what caused the leak.
Why Choose QRS for Flat Roof Repair?
A flat roof repair only works if it fixes the real problem, so we take the time to find it before we pick up a tool.
Source, not symptoms
Your ceiling stain tells us where to start looking, not where to patch.
Honest repair-or-replace advice
If your roof is past repairing, we’ll say so and show you the photos that explain why.
No mystery pricing
The repair scope and price are in writing before we start, with nothing vague tucked into the fine print.
A clean job site
We clean up as we go and leave your property as tidy as we found it.
Frequently Asked Questions
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.
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.
Tell us what you need.
Two minutes. A clear next step. No pressure.
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
- Google customer reviews
