Leaks Below Rooftop Units
Units on plant roofs vibrate and settle, and the flashing at their curbs cracks or slides loose. Water entering at a curb can surface far down a production line, hiding its real source.

As a Marion commercial roofing contractor, we replace TPO, EPDM, and metal roofs on plants and commercial buildings in Marion, working in sections so operations keep running.

Marion commercial roofing work often lands on plant buildings where production has to keep going under the roof. We split the roof into sections sized for one day of tear-off, so only a small area is open above the floor at any time.
Each section is dried in with new insulation and membrane and tied into the old roof before the crew leaves. Rooftop units, intakes, and exhaust runs are scheduled with your maintenance staff ahead of time.
Plant and commercial roofs in Marion tend to show the same handful of problems before a replacement. Here is what we look for first.
Units on plant roofs vibrate and settle, and the flashing at their curbs cracks or slides loose. Water entering at a curb can surface far down a production line, hiding its real source.
Slow leaks on large roofs soak insulation across whole bays before stains show inside. Cores mark the wet zones and set which sections need a full tear-off and which only need new membrane.
Aging TPO and EPDM seams let go along long runs as welds, tape, and adhesive tire. Open laps across many runs point toward new membrane in the coming phases of work.
Process exhaust and hot vents dry out membrane and sealant around stacks. Replacing that area with flashing built for heat ends the cracking that keeps reopening there after every repair.
Plant roofs with interior drains hold water when strainers clog or decks sag. Tapered insulation in the new roof steers water to the drains so it stops sitting on the seams.
Many plants add metal-roofed wings over the years. Rusted laps and loose fasteners on those sections get new panels or a retrofit, planned alongside the flat roof work.
Some Marion roofs need a curb or a few laps fixed, and some need new membrane. The table shows how repair, recover, and tear-off compare there.
| What You See | Targeted Repair | Recover | Tear-Off And Replace | What Decides It |
|---|---|---|---|---|
| Leak at one curb on an otherwise dry roof | Usually fits | Rarely | Rarely | Cores near the curb test dry. |
| Older membrane with dry insulation below | Rarely | Usually fits | Sometimes | One existing layer on the deck. |
| Wet insulation across several bays | Rarely | Sometimes | Usually fits | Core map of the wet zones. |
| Plant wing with rusted metal panels | Sometimes | Usually fits | Usually fits | Purlin condition under the metal. |
| Units being added or relocated | Sometimes | Sometimes | Usually fits | New curbs and supports needed. |
| Two layers already on the roof | Sometimes | Rarely | Usually fits | Code limits on another layer. |
Three systems cover most Marion plant and commercial roofs. Each card names where it fits.

White TPO with welded seams for large Marion plant and warehouse roofs that need a durable, repairable surface around equipment.
Kokomo TPO Roofing
EPDM rubber for flat Marion commercial roofs with simple layouts, adhered or fastened and flashed at every wall and drain.
Kokomo EPDM Roofing
Metal panels for plant wings, shops, and storage buildings in Marion, as new roofs or framed retrofits over flat sections.
Kokomo Commercial Metal RoofingWater reaching a Marion production floor or office right now? Call us and tell us where it shows so the first visit goes straight to that area.
Call UsPlanning a phased replacement on a Marion plant? Book a free inspection with cores and a section-by-section plan.
Schedule Your Free InspectionFour stages carry a Marion replacement from the first roof walk to the last flashing, each one planned around your operations.
Our first visit maps every curb, drain, and stack and takes cores across the bays. The map shows which sections need tear-off and which can take a recover instead.
Sections are matched to production schedules, crane days, and areas where overhead work has to wait. Your maintenance lead signs off on the order before the crew mobilizes.
Tear-off reaches the deck, damaged deck is fixed, and insulation and membrane go on before the crew breaks for the evening. The new section ties into the old roof watertight before evening.
Curbs, stacks, and drains get finished flashing, walkway pads lead to each unit, and the debris is hauled away. A final walk with you covers the completed sections.

Along with Marion, we replace commercial roofs in Kokomo and the four towns below.
Building somewhere else? Call us or send us a message.
Yes. We install and replace TPO on industrial and commercial buildings in Marion. Each job starts with cores to locate wet insulation, then the old roof comes off in phases, the deck is checked, and new insulation and welded TPO go on with fresh flashing at every curb and drain.
The local building department confirms permit needs before work starts.
Price follows the roof itself: square footage, how many old layers come off, how much insulation is wet, the system and membrane thickness, and the number of curbs, stacks, and drains to flash. Phasing around production, crane days, and access add to it.
A free inspection with cores turns those items into a written price for your Marion building.
Work runs in sections small enough to tear off and close in one day, so most of the building sits under a finished or untouched roof. Crane lifts, noisy tear-off, and work near intakes are timed with your staff, and each section is sealed before the crew leaves.
Debris goes out on a set path away from doors and docks.
Ask any roofer near Marion for an in-person roof walk, cores at the stains, and a written scope naming the system, membrane thickness, insulation, and flashing details. Ask how they phase work around operations and who checks permit needs.
We cover Marion from Kokomo and put those items in writing after every inspection.
The building department that covers Marion confirms whether a re-roof needs a permit, and deck repairs or moved rooftop equipment can change the answer. We check those requirements before a replacement starts, so the schedule accounts for any review time.
Send us the Marion address and what the roof is doing, and we will schedule a free inspection with cores and a phased plan.