As a Merrillville commercial roofing contractor, we install and replace TPO, EPDM, industrial, and metal roofs on warehouses, retail centers, and offices in Lake County.
Merrillville commercial roofing work comes down to four systems, matched to the slope, the foot traffic, and the equipment each roof carries.
Heat-welded white membrane for low-slope roofs on retail centers and warehouses, where seams take service traffic and the white surface keeps summer heat off the deck.
Black rubber sheet that stays flexible through a Lake County winter and patches cleanly years later, set fully adhered or under ballast on low-slope decks.
Plants and distribution buildings carry fans, curbs, conduit, and daily technician traffic, so the membrane, cover board, and walkway pads are chosen around that equipment.
Standing-seam and exposed-fastener panels for pitched commercial roofs, shops, and storage buildings, or framed over a worn flat roof to add slope and drainage.
A new roof on a busy Merrillville building should change what tenants, managers, and maintenance staff deal with every season.
Work is staged by tenant space, so one storefront roof is opened, insulated, and sealed before the crew moves along the parapet to the next unit.
Each curb is stripped and reflashed with the new membrane, which closes the gaps where most low-slope leaks start around HVAC units and exhaust fans.
Tapered insulation is cut to move water toward drains and scuppers, so ponding rings that sat for days after a storm stop forming on the field.
Walkway pads run from the hatch to every serviced unit, keeping technicians off the open membrane and spreading the load of tools and parts.
Big roofs fail zone by zone. These are the five places we check first on a Merrillville warehouse or plant before talking about a new system.
Coping joints split as the parapet moves, and water runs behind the base flashing into the wall. Snow drifts against high walls make this worse every winter.
Laps on an aging membrane open where the adhesive has dried out. Thin spots and punctures cluster along the paths technicians walk to reach equipment.
Strainers clog with leaves and gravel, so meltwater backs up and ponds. A low drain sump also sags over time and holds water against the seams.
Pitch pans dry out, pipe boots crack, and curb flashing pulls loose as the membrane shrinks. Most interior stains trace back to one of these penetrations.
Wet insulation under the field crushes, rusts deck fasteners, and soaks up more water each storm. Core cuts show how far the moisture has spread.
Send the address and the rooms where tiles are wet. We will set up a roof walk and core cuts so the price fits the roof you actually have.
Get A Free EstimateEvery job starts on the roof with the owner or manager, then moves to a written scope that names each layer and each detail.
We meet the owner or manager on site, walk the full roof, and mark every wet area, open lap, and failed curb on a plan of the building.
You get a written scope listing tear-off layers, insulation thickness, the membrane or panel, and each flashing detail, with notes on what the core cuts showed.
Sections are sized to what the crew can open and close in one day, and loud tear-off is booked around patient hours, deliveries, and store openings.
Old layers come off, deck repairs go in, then insulation, membrane, and flashing. Every opened section is sealed before the crew leaves the roof.
A last walk with you checks seams, curbs, and drains, and you keep photos of each stage for the building file and future roof work.
Match what you see on your roof to the job that usually fits. Core cuts confirm the call before any price is set.
| What You See On The Roof | Repair The Section | Recover Over It | Tear Off And Replace |
|---|---|---|---|
| One leak at a curb or pipe boot, dry insulation around it | Usually Fits | Rarely | Rarely |
| Open seams across the field, insulation still dry | Sometimes | Usually Fits | Rarely |
| Ponding that sits for days after rain | Rarely | Sometimes | Usually Fits |
| Wet insulation in several areas of the roof | Rarely | Rarely | Usually Fits |
| Two roof layers already in place | Sometimes | Rarely | Usually Fits |
Positions are general guides from what an owner can see. The core cuts and deck check on the roof walk decide the final recommendation.
We take commercial roofing work in Merrillville and five towns close by. Outside them? Call us or send us a message about your building.
Home base along US 30 and I-65, with retail centers, medical offices, and distribution buildings on low-slope roofs.
County offices, shops, and warehouses where roof work is often planned around public hours and parking.
Strip centers and office buildings on long shared roofs, replaced one tenant space at a time.
Plants, shops, and warehouses carrying fans and stacks, so roofs are laid out around equipment and walkway pads.
Newer offices, shops, and storage buildings, many with pitched metal roofs beside flat sections.
Pole buildings, shops, and flat-roofed businesses where metal panels and membranes often share one property.
Figures: 2020 U.S. Census counts, census.gov QuickFacts.
For most systems, yes. Fastened TPO and EPDM and most metal panels go down in the cold, while certain adhesives wait for warmer days. Crews clear snow and frost first, open only the area they can seal by evening, and use cold-rated products, so shorter daylight stretches the schedule a little.
Ask each roofer for Town of Merrillville contractor licensing, liability and workers' compensation coverage, and experience with your system. Then compare written proposals line by line: tear-off, insulation, membrane thickness, and flashing. Manufacturer certification matters too, because many system warranties require it.
Long, low-slope retail roofs crowded with rooftop units usually get TPO or EPDM. White TPO helps cooling, and EPDM rides out cold and repairs easily. Tear-off is planned one tenant space at a time with every unit reflashed, so the stores below keep trading.
These buildings run equipment that has to stay on, so low-slope TPO or EPDM over tapered insulation is a common pick. Noisy tear-off is booked around patient hours, fresh-air intakes are covered against dust and fumes, and each section is closed before evening.
The system, membrane thickness, insulation, layers torn off, roof size, number of penetrations, and access all move the number. Small roofs and roofs crowded with units cost more per square foot. Because conditions set the price, the estimate comes after a free visit to your roof.
Price follows the number of old layers removed, the deck condition, how much insulation is wet, the system chosen, and flashing at walls, curbs, and drains. Crane access and phasing around tenants add to it, and the on-site visit turns those facts into one number.
Send the property address and what the roof is doing, or call to set up a roof walk.
