Rooftop Unit Curbs
Units shake their curbs loose over time. Rain then runs down the inside of the curb wall and shows up over a hallway.
Leak Repair
Plainfield Commercial Roof Leak Repair Contractor
Is That Ceiling Stain Coming From The Roof Above It?
As a Plainfield commercial roof leak repair contractor, we trace stains back to the opening, then repair it in matching material.
- Stains mapped inside
- Moisture read on the roof
- Water tests section by section
- Notes for owners and tenants
Plainfield Commercial Roof Leak Repair: What The Stain Tells Us
Plainfield commercial roof leak repair starts by reading the leak itself. When and where it drips narrows down the source.
| When It Leaks | Likely Source | First Place We Check |
|---|---|---|
| Only in heavy rain | Overflowing drains or gutters | Drain strainers and scuppers |
| Days after snow | Melt backing up under laps | Parapet corners and frozen drains |
| In wind-driven storms | Open trim or wall flashing | Coping joints and rake trim |
| Any rain, same spot | A split seam or boot nearby | Curbs and seams uphill of the stain |
Commercial Roof Leak Repair Sources On Plainfield Offices
These six openings start most of the leaks we trace on office and retail roofs.
Cracked Pipe Boots
Rubber boots around vent pipes crack in the sun. The leak lands near a restroom or kitchen wall.
Open Coping Joints
Joints in the wall cap separate, and water runs down inside the parapet before reaching the ceiling.
Ice At Drains
Frozen drains hold melt water on the roof until it backs up under the nearest lap. The leak appears days after the snow stopped.
Split Seams Uphill
Water entering at a seam travels along the deck and drips several feet from the opening, often in a different room.
Ice Dams At Eaves
Snow melts on a warm roof and refreezes at the cold edge, pushing water under trim and flashing.
Commercial Roof Leak Repair Tools In Plainfield
Tracing a leak takes several methods used together.
Stain Mapping
Every stain, drip, and wet tile gets marked on a floor plan so roof work starts directly above it.
Moisture Readings
A meter run across the membrane shows where water has spread into the board below.
Controlled Water Tests
Suspect areas are wetted one at a time while someone watches the ceiling from inside.
Targeted Repairs
Only the opening that tests positive gets cut open and repaired, in the same material as the roof.
What Commercial Roof Leak Repair Fixes In Plainfield
Each row pairs a common leak source with the repair that stops it.
Shaken Curb Flashing
Loose flashing at a unit curb lets rain run inside the curb wall.
The Repair
New flashing wraps the curb and terminates under a sealed counterflashing.
Open Wall Caps
Separated coping joints let water into the wall cavity.
The Repair
Joints are resealed or the coping replaced, and base flashing is reattached below.
Snowmelt Backups
Melt water held by ice pushes under laps near drains.
The Repair
Laps near drains get sealed, and drains are cleared so the next melt runs off.
Cracked Boots
Split pipe boots drip next to plumbing walls.
The Repair
Boots are replaced and sealed to the membrane around the pipe.
Leak Showing Up After Every Storm?
A repeat leak means the source has not been found yet. Call and we will trace it.
How Commercial Roof Leak Repair Runs In Plainfield
Leak work goes back and forth between the ceiling and the roof until the source is confirmed.
- 1Around The Building
Map Every Stain
Inside, each stain and drip goes onto a sketch of the floor, with notes on when it appears.
- 2On The Roof
Search Uphill
On the roof, we start above the stain and work toward the high side, checking seams, curbs, and boots.
- 3Around The Building
Water-Test With A Spotter
A spotter inside watches the ceiling while one area at a time is wetted on the roof.
- 4On The Roof
Repair The Opening
The confirmed source gets cut open, dried, and repaired in matching material.
- 5Around The Building
Write Up The Cause
You get photos and a note naming the source, which helps owners and tenants sort out responsibility.
Repairs That Follow A Traced Leak
Once the source is known, the fix falls under one of these services.
Water standing on the roof for days
Flat Roof Repair
Membrane laps, drains, and blisters on low-slope roofs.
Typical Repairs- Welded TPO and taped EPDM patches
- Drain strainers and clamp rings reset
- Wet insulation board replaced
- Base flashing readhered at parapets
Rust streaks or drips along panel laps
Commercial Metal Roof Repair
Fasteners, laps, rusted panels, and trim on steel roofs.
Typical Repairs- Oversized fasteners with new washers
- Side and end laps resealed
- Rusted panels swapped to match
- Ridge caps and foam closures reset
Drips over a production line
Industrial Roof Repair
Curbs, drains, and decks on plant roofs.
Typical Repairs- Fan and stack curbs reflashed
- Rusted deck sections replaced
- Drains and overflow scuppers repaired
- Walkway pads to rooftop equipment
Commercial Roof Leak Repair Questions In Plainfield
Leases, snowmelt, parapets, ice dams, and tracing.
Who has landlord responsibility for roof leaks in a commercial lease?
Your lease decides it. Some put the roof on the landlord, others on the tenant, and some split the cost. Report leaks in writing quickly; our photos and notes show what failed for both sides.
Why is my roof leaking after snow melt but not in rain?
Ice at drains and parapets holds melt water on the roof until it backs up under laps and flashing. We clear those drains and seal the laps near them so the next thaw drains properly.
How do you fix a roof leak at a parapet wall?
Coping joints, counterflashing, masonry cracks, and the base flashing all get checked. Most of these leaks come from open coping joints or flashing that pulled loose, and we reseal or replace whichever failed.
How are ice dam leaks on commercial roofs repaired?
Damaged eave flashing gets replaced, laps near the edge are sealed, and gutters are cleared. Where ice dams return every winter, we look for heat escaping into the roof from below.
Why can I not find the leak above the stain?
Water travels along the deck and insulation before dripping, sometimes many feet from where it entered. That is why tracing starts at the stain and works uphill toward the high side of the roof.
How long does it take to trace a leak?
Simple leaks show up in one visit. Leaks that only appear in certain storms take water testing, and sometimes a second visit after the next rain.
Do you write up leaks for insurance or tenants?
Every traced leak gets photos and a short written note naming the source and the repair, which owners can share with tenants or adjusters.
Can a roof leak through a wall instead of the roof?
Often it does. Open coping, cracked masonry, and loose wall flashing let water in above the roof line, and it shows up like a roof leak inside.
Hire A Plainfield Commercial Roof Leak Repair Contractor
Tell us where the stain is and when it drips, and we will start tracing.