Penn Ohio Roofing
Commercial Roofing in Greenville, PA
In-house crews out of our Sharon, PA shop.
Greenville commercial roofing is downtown blocks on Main and Mercer, plus the smaller light-industrial buildings on the outskirts and the Thiel College outbuildings — a mix that's smaller-scale than Sharon commercial and older than Hermitage commercial.
Downtown Greenville Commercial
The Main Street and Mercer Avenue commercial blocks are masonry buildings from the pre-WWII commercial buildout, most with a 1970s or 1980s built-up asphalt or modified bitumen roof that has been coated and re-coated to defer replacement. The correct approach at this point on most of those buildings is a full tear-off, new tapered ISO insulation, and a new 60-mil TPO or EPDM top cover with re-flashed penetrations and new ES-1 metal edge.
Coating over an old commercial roof in downtown Greenville is a last-resort measure — it defers the leak, it does not stop the underlying deck deterioration. On any building with active interior water damage we recommend against continuing to coat.
Thiel College Outbuildings and Small Manufacturing
Greenville's smaller manufacturing footprint and the Thiel campus outbuildings are single-ply low-slope buildings, most on EPDM from the 1990s or on modern TPO from replacements in the last 10-15 years. Replacement work is standard 60-mil single-ply — TPO on the newer facilities, EPDM where the building has HVAC service traffic and the deck movement supports it better.
Church Roofs on Downtown Greenville Blocks
Greenville has a concentration of older downtown churches with steep-slope slate or asphalt roofs. Those are a specialty commercial category — different from low-slope commercial, closer to a large steep-slope residential job. We install architectural asphalt or standing seam metal on those with commercial-grade warranties, plus repair work on the slate roofs that are still in serviceable condition.
What Is Commercial Roofing?
Commercial roofing covers the flat and low-slope systems on Greenville businesses, churches, apartment buildings, and light industrial properties — single-ply membrane, modified bitumen, and coating restorations. These roofs fail differently from residential shingle: the enemy is standing water, seam failure, and penetration detail, not wind uplift on a steep slope.
Low-Slope Systems We Install in Greenville
- 1TPO and PVC single-ply: heat-welded seams, high reflectivity, the default for most new low-slope work.
- 2EPDM rubber: durable and forgiving on complex roofs, seamed with tape or adhesive.
- 3Modified bitumen: torch- or cold-applied, still the right answer on many older decks.
- 4Silicone and acrylic coating restorations: extend the life of a sound but aging membrane without a tear-off and without shutting the business down.
What Matters on a Commercial Roof
- Solve the drainage. Tapered insulation and adequate drains — ponding water is what kills low-slope roofs.
- Detail every penetration, curb, and parapet properly. That is where nearly all commercial leaks originate.
- Phase the work around business hours so operations keep running.
- Set up a documented maintenance schedule; most manufacturer warranties require it.
What to Avoid
- Patching the same spot year after year instead of correcting the drainage.
- Coating over a wet, saturated substrate — it traps the moisture in.
- Crews without low-slope-specific training welding seams.
- Skipping the roof survey and moisture scan before a restoration.
Warning Signs on a Greenville, PA Home
- Ponding water still standing 48 hours after rain.
- Open, lifted, or fishmouthed seams.
- Blisters or ridges in the membrane.
- Interior ceiling tile staining, often far from the actual entry point.
- Failed sealant at curbs, drains, and rooftop units.
What Drives the Cost of Commercial Roofing in Greenville
- •Square footage and roof complexity — units, curbs, and penetrations.
- •Tear-off versus recover versus coating restoration.
- •Insulation R-value and whether tapered insulation is needed for drainage.
- •Membrane type and thickness, and the warranty term you want.
- •Access, staging, and whether work must happen after hours.
Commercial Roofing Work Near Greenville
Representative projects from our crews across the Shenango Valley and the PA/OH border.
Manufacturer credentials
- GAF Master Elite Contractor. Held by a small percentage of roofing contractors nationwide. Required to install the GAF Golden Pledge warranty — 50 years on materials, 25 years on workmanship, transferable once. GAF inspects the completed roof before issuing the warranty.
- Owens Corning Preferred Contractor.
- IKO Craftsman.
- Fully insured in Pennsylvania and Ohio. In-house crews — no subcontractors. Family-owned and operating out of Sharon, PA since 2000.
Path 1 — Insurance claim
For wind, hail, or storm-driven damage. We walk the roof with your insurance adjuster and document what we find so nothing that should be covered gets missed. We are not a public adjuster — that is a separate PA license — and we do not negotiate the settlement. We document damage, meet the adjuster, and rebuild what the carrier approves to code and to manufacturer spec.
Path 2 — Retail with financing
For roofs simply reaching the end of their life. 0% interest financing on shorter terms and long-term financing that keeps monthly payments low. Runs through a lending partner and is subject to credit approval. We walk through both paths in the free in-home estimate before you sign anything. See financing details →
Frequently Asked Questions — Greenville
- Do you handle downtown Greenville storefront commercial?
- Yes — masonry pre-WWII commercial buildings on Main and Mercer are a core part of our Greenville commercial work. Full-tear-off replacements with new insulation and single-ply top cover, or targeted repair on buildings that still have serviceable life.
- Can you re-roof a Greenville church?
- Yes — Greenville steep-slope church work is a specialty category we handle. Architectural asphalt or standing seam metal replacements with commercial-grade warranties, plus repair work on serviceable slate roofs where full replacement isn't yet warranted.
- What single-ply do you recommend for a Greenville light-industrial building?
- TPO for newer facilities and general light-industrial, EPDM where the building has HVAC service traffic. Both installed as fully-adhered 60-mil systems with 20-year manufacturer NDL warranties.
- Do you drive to Greenville for commercial work?
- Yes — Greenville is a routine commercial service area. Larger projects run their own on-site logistics; smaller repair and inspection work is scheduled to bundle Greenville visits together when possible.