These Greenwood commercial roofing FAQ answers cover TPO, EPDM, industrial, and metal roofs, plus permits and the towns we work in.
Pick a topic in this Greenwood commercial roofing FAQ, or read straight through from the top.
Warehouses
Both are single-ply membranes that work on low-slope warehouse roofs, and the choice comes down to the building. TPO is usually white, reflects sunlight, and has heat-welded seams. EPDM is a rubber membrane, usually black, that stays flexible in cold weather and uses taped seams.
Rooftop traffic, insulation needs, and cooling load in the space below usually decide it.
Lifespan
It depends on the system and the care it gets. TPO and EPDM roofs often last 20 to 30 years, and commercial metal roofs often run longer. Poor drainage, skipped maintenance, technician foot traffic, and hail all shorten a roof's life.
Inspections after winter and after spring storms catch small problems before they turn into a full replacement.
Hiring
Pick a roofer who works on commercial systems, inspects the roof before quoting, and puts the scope in writing: the membrane or panel system, insulation, flashing details, and tear-off or recover. Ask how they keep the building operating and how they close the roof at the end of each day.
A contractor based near Greenwood can reach the building easily for follow-up visits.
Definition
Commercial roofing covers roofs on non-residential buildings: warehouses, plants, retail centers, offices, churches, and schools. Most are low-slope roofs with membranes such as TPO or EPDM, or metal panel systems. The work involves larger roof areas, rooftop equipment, commercial building codes, and coordination with tenants and operations, from strip retail to large distribution buildings.
Auto plants
Yes. Auto parts plants often have large low-slope roofs crowded with exhaust fans, rooftop units, and process penetrations. We install TPO, EPDM, or metal in sections so production lines stay covered, protect equipment below from debris, and flash every penetration to the membrane maker's details. The schedule is built around shift changes and shipping hours.
Replacement
Replacement makes sense when the membrane or panels are failing across most of the roof, the insulation is saturated, or the deck is damaged. Core cuts and a moisture survey show how much insulation is wet.
If only a few areas are affected, repairs or a recover can be enough, so we compare those options before recommending a full tear-off.
Fall checks
Yes. A fall inspection finds open seams, loose flashing, and clogged drains before snow and ice arrive. On a Greenwood retail center, that includes every rooftop unit curb, the scuppers, and the parapet caps, since those are common leak points once snow melts.
Fixing small items in fall avoids winter leaks over store floors and stock.
Freeze-thaw
Water that gets into a seam, crack, or flashing gap freezes, expands, and opens the gap wider; then it thaws and leaks. Over a Greenwood winter that cycle repeats often. Ice also forms at drains and scuppers and backs water up onto the roof. Keeping drains clear and seams tight before winter limits freeze-thaw damage.
Seam welding
TPO seams are joined with a hot-air welder that melts the overlapping sheets together, so the seam is fused rather than glued. Crews probe every seam after welding to find gaps, and they cut test welds each day to confirm the welder settings suit that day's temperature.
Welded seams are a main reason TPO holds up at laps.
Basics
TPO, thermoplastic polyolefin, is a single-ply membrane, typically white, installed over insulation on low-slope roofs. Its seams are heat-welded, and the white surface reflects sunlight. On warehouses, retail centers, and offices, TPO is mechanically attached or fully adhered depending on the deck type, wind exposure, and the layers already on the roof.
Cost
TPO cost depends on roof size, membrane thickness, insulation type and thickness, whether the old roof is torn off, how many penetrations need flashing, edge metal, and crane or lift access.
The attachment method changes labor too. Every Greenwood project is priced from a free on-site estimate, because two roofs of the same size can need very different work.
Recover
Often, yes, if the existing roof is dry, the deck is solid, and the building does not already have the maximum number of roof layers. A recover board goes over the old roof, then the TPO.
Wet insulation must come out first, so we run a moisture survey before recommending a recover. Recover avoids tear-off debris and keeps the building closed.
Rooftop units
Yes. TPO's welded seams and premade flashing pieces handle curbs, pipes, and drains well. We add walkway pads along the service paths to each unit, because technician traffic is a common source of punctures. Each tenant's unit is flashed separately, and the roof is worked in sections so stores can stay open during installation.
Winter work
It can, with limits. TPO welds in cold weather when the welder settings are adjusted and checked with test welds, but adhesives and some sealants have minimum application temperatures. Frost, ice, or snow on the deck must be cleared and the surface dry before membrane goes down.
Mechanically attached TPO is usually easier to install in winter than fully adhered.
Replacement
Replace EPDM when it has shrunk away from walls and edges, seams are opening across the roof, the membrane has turned brittle, or the insulation underneath is wet. Isolated seam failures can be repaired.
We test seams, check for wet insulation, and compare the repair and replacement scopes before recommending a full EPDM replacement on a Greenwood building.
Basics
EPDM is a synthetic rubber membrane, usually black, installed in large sheets on low-slope roofs. It is fully adhered, mechanically attached, or ballasted with stone, and its seams are joined with tape. EPDM stays flexible in cold weather, which suits Indiana winters. It is common on offices, schools, churches, and light industrial buildings.
Cost
EPDM cost depends on roof area, membrane thickness, attachment method, insulation, removal of old layers, the number of penetrations, and wall and edge flashing. Ballasted systems need a structure that can carry the stone. We price every Greenwood EPDM roof through a free on-site estimate after measuring the roof and checking what is underneath.
Seam repair
Yes. Open EPDM seams are cleaned, primed, and covered with seam tape or a cover strip that bonds to the rubber when installed correctly. Older seams often fail because the original adhesive dried out. If seams are failing across the whole warehouse roof rather than in a few spots, replacement becomes the more practical path.
Call and describe what you see on the roof or the ceiling. We answer what we can on the phone and set a roof walk for the rest.
Hiring
Look for a roofer who has worked over active production floors and plans around them: phased sections, debris control, protection for equipment and product, and coordination with the plant's safety staff.
Ask how they handle process exhaust, heavy rooftop equipment, and fall protection. A written scope and a schedule tied to shifts matter as much as the roof system.
Basics
Industrial roofing is roofing for factories, plants, warehouses, and processing buildings. These roofs are usually large and low-slope, carry heavy mechanical equipment, and can face heat, grease, or chemical exhaust from processes inside. Systems include TPO, EPDM, and metal. The work often happens over operating floors, so planning and safety are part of every job.
Cost
The main factors are roof size, system choice, insulation, tear-off versus recover, the number and size of penetrations and curbs, equipment that must be lifted or worked around, and phasing to keep production running.
Chemical or heat exposure may call for a specific membrane. Each Greenwood facility gets a free on-site estimate that sets the price.
Live plants
We work in sections, opening only what can be closed before the end of the day, and protect lines and products below with dust and debris controls. Hot work and crane lifts are scheduled with the plant's safety staff.
We map exhaust stacks, intake vents, and process penetrations first, so membrane and flashing choices fit what comes out of the roof.
Retrofit
Often, yes. A retrofit metal roof uses light framing over the old roof to create slope or a flat plane, then standing-seam or ribbed panels go on top. The old roof stays in place, which avoids tear-off and keeps the building closed.
The structure must carry the added weight, so an engineer's review is part of the plan.
Cost
Cost per square foot depends on panel type and gauge, standing seam versus exposed fastener, roof slope and size, retrofit framing, insulation, trim and flashing, and tear-off. Complex roofs with many penetrations cost more per foot than plain rectangles. We do not quote per-foot figures sight unseen; a free on-site estimate sets the Greenwood price.
Lifespan
Commercial metal roofs often last 30 to 50 years when panels, fasteners, and flashing are maintained. Standing-seam systems with concealed clips tend to outlast exposed-fastener panels, whose screws need periodic attention. Freeze-thaw movement and hail are the main stresses on Greenwood metal roofs, so fastener checks and inspections after storms matter.
Snow load
Snow load is set by the building code and the structural design of each building rather than by the roof panels. When a Greenwood building gets a new metal roof or retrofit framing, an engineer confirms the structure can carry the design snow plus the added weight.
Snow guards may be added where sliding snow could drop over doors or walkways.
Greenwood permits
Ask before the job is scheduled: a full replacement changes more than a repair, and permit needs follow the scope. In Greenwood, building permit applications go through the city's Community Development Services.
Statewide, the Fire Prevention and Building Safety Commission sets commercial construction rules in the Indiana Building Code, 675 IAC 13. Tear-off, structural work, and new rooftop units all matter.
Franklin
Yes. We install TPO, EPDM, and metal roofs on manufacturing and commercial buildings in Franklin. Plant roofs there get the same planning as our Greenwood work: sectioned installs, protection for production areas, and flashing details matched to exhaust and process penetrations. Owners get a written scope before any material is ordered.
Shelbyville
Yes. We install and replace TPO and EPDM roofs on warehouses, offices, and retail buildings in Shelbyville. The choice between the two depends on the building's cooling load, rooftop traffic, and existing layers. We check the deck and insulation first, so the new membrane goes over a dry, solid base.
Bargersville
Yes. We install commercial metal roofs on shops, ag businesses, and light commercial buildings in Bargersville. Options include standing-seam panels and retrofit metal over an existing low-slope roof. The structure is checked for added weight and snow load, and trim, ridge, and penetration flashing are detailed before panels go up.
New Whiteland
Yes. We replace roofs on retail and office buildings in New Whiteland with TPO, EPDM, or metal, depending on the roof's slope and condition. Work is phased so tenants can stay open, with debris chutes and protection over entrances. Rooftop units are flashed to the new membrane before each section is closed.
Whiteland
Yes. We roof distribution and warehouse buildings in Whiteland, where large low-slope roofs are common. TPO is often used for its reflective surface, and EPDM where cold-weather flexibility matters. We plan staging around truck courts and dock doors, and we work in sections so the building stays dry throughout.
Ask us directly. We walk your roof, answer questions on the spot, and send a written estimate for the work it needs.