Insulation
Boards beside a split seam stay dry and firm instead of soaking up water that later has to be cut out.
Flat Roof Repair
Scottsdale Flat Roof Repair
We repair flat roofs on Scottsdale offices, shops, and restaurants where water actually gets in: seams, drains, scuppers, curbs, parapet flashings, and pipe boots.
- Common SourceSeams, drains, and edges
- Roof SystemsTPO, built-up, modified bitumen
- First CheckDrains and scuppers
- Starts WithA roof walk and photos
Repair Now Or Plan A New Flat Roof?
Flat roofs leak at their details long before the open field wears out. The question is whether the layers under the membrane are still dry.
A Repair Covers It When
- Leaks trace to seams, curbs, or drains near the stain
- Insulation reads dry around each leak
- The membrane folds without cracking
- Ponding clears soon after the rain stops
- Edge metal and coping sit tight along the parapet
Plan Replacement When
- Wet insulation shows up across whole bays
- Blisters and splits cover most of the field
- Gravel is gone from a built-up roof and the felts are exposed
- Soft deck spots give underfoot
- Several roof layers already sit on the deck
What You See On A Flat Roof, And Why
On flat roofs, water almost always gets in at a transition: a seam, a drain, an edge, or a penetration.
What You See
Dark lines along a seam
Likely Cause
Laps opened by years of daily heating and cooling, letting dust and water under the edge.
What We Do
Probe the full seam run, then reweld TPO laps or reseal built-up and modified bitumen laps with matched material.
What You See
A ring of dirt around the drain
Likely Cause
Dust packed into the strainer, holding water against the drain flashing until it wears through.
What We Do
Clear and reset the strainer, check the clamping ring, and rebuild the drain flashing where the membrane has thinned.
What You See
Stains below a rooftop unit
Likely Cause
Curb sealant that dried in the sun and pulled away from the metal curb.
What We Do
Remove the old sealant and rebuild the curb flashing with a proper overlap and termination.
What You See
Water along an exterior wall
Likely Cause
Gaps under the coping cap or failed counterflashing letting water into the wall cavity.
What We Do
Reseal coping joints, rebuild the base flashing, and close stucco cracks above the roof line.
What You See
Drips near plumbing vents
Likely Cause
Pipe boots and vent collars that cracked after years of direct sun.
What We Do
Cut out the cracked boot and install a new one flashed into the membrane.
Flat Roof Repair Options In Scottsdale
Each repair is matched to the membrane on your roof, since TPO, built-up, and modified bitumen take different materials.
| Repair | What It Fixes | When It Is Enough |
|---|---|---|
| Seam reweld or reseal | Open or lifted laps along a seam run | The membrane beside the seam is still flexible |
| Drain and scupper rebuild | Worn flashing and clogged strainers | The deck under the drain is solid |
| Curb reflashing | Dried sealant and split corners at rooftop units | The curb itself is level and dry |
| Coping and base flashing repair | Water entering at the parapet | The stucco wall behind it is intact |
| Wet area cut-out and patch | A pocket of wet insulation under one leak | Moisture readings show the wet area is contained |
What A Timely Flat Roof Repair Keeps Dry
Water that gets past a flat roof seam spreads sideways before it shows up inside.
Deck Surface
A steel deck under a sealed drain stays free of the rust that spreads from standing water.
Wall Cavities
Resealed coping keeps water out of the stucco wall, where it would run down behind the membrane.
Ceilings Below
Tile and fixtures under a rebuilt curb stay clean through the next monsoon storm.
Water Collecting Around A Roof Drain?
Call with the location of the drain or the stain. A packed strainer can often be cleared on the visit when the roof is inspected.
(623) 310-0118How A Flat Roof Repair Runs
The work follows the water from the stain inside to the seam or flashing that let it in.
Step 1: Inspect Your Roof
We walk every seam run, drain, scupper, curb, and parapet, and take moisture readings at soft spots in the membrane.
Step 2: Find The Entry Point
Packed drains and dirt rings show where water sits. Seams upslope of each interior stain get probed by hand until the opening turns up.
Step 3: Seal Or Rebuild The Detail
Wet insulation under the leak gets cut out and replaced, then new membrane is welded or adhered over it and lapped onto the existing sheet.
Step 4: Hose Test And Photo Record
Each repaired seam or drain gets water run across it, and you receive photos showing every location we opened and closed.
Related Repairs For Flat Roofs
Flat roof work often overlaps with these two services.
Commercial Roof Leak Repair
When a stain inside has no obvious source on the flat roof, leak repair traces it across the deck before anything gets patched.
We Check
- Stain location inside
- Upslope seams and curbs
- Insulation moisture
We Fix
- Temporary leak control
- Permanent repair at the source
- Hose test of the repair
Industrial Roof Repair
Flat roofs over warehouses and plants carry fan curbs and process vents, which industrial roof repair plans around production.
We Check
- Exhaust and vent curbs
- Service paths and walkways
- Discharge zones near intakes
We Fix
- Reflash fan and unit curbs
- Patch traffic punctures
- Lay new walkway pads
Flat Roof Repair Questions
Where Do Flat Roofs In Scottsdale Usually Leak?
At the transitions. Seam laps split from daily heating and cooling, drains and scuppers pack with dust, curb sealant dries out, coping joints open, and pipe boots crack in the sun. The open field of the membrane is rarely the first place water gets in.
Can You Repair A TPO Roof That Has Faded?
Usually, if the membrane still welds. We test a small spot first: clean, scuff, and weld. TPO that accepts a clean weld can take seam and patch repairs. Sheet that will not weld has reached the end of its repair life.
How Do You Repair A Built-Up Roof With Gravel?
By scraping back the gravel, cutting out the damaged felts, and building new plies over the area with matching bitumen. The gravel goes back on afterward to keep the sun off the new layers.
Do Blisters Need Repair?
Some do. A small blister with intact membrane gets photographed and watched. A blister that has split, or one growing near a seam, gets cut, dried, and patched before water reaches the insulation.
Can Ponding Water Be Fixed During A Repair?
Partly. Clearing a packed drain, resetting a strainer, or opening a scupper often clears standing water. Low spots from a sagging deck or missing slope need more than a repair, and we tell you when that is the case.
How Long Does A Flat Roof Repair Take?
Most seam, drain, and curb repairs fit in one visit once the leak source is found. Cutting out wet insulation adds time for drying and rebuilding the area, and adhered materials need dry weather.
Have The Flat Roof Checked
Request a free estimate or call, and the first step is a walk of every seam and drain on your Scottsdale building.