Penn Ohio Roofing
Commercial Roofing in Warren, OH
In-house crews out of our Sharon, PA shop.
Warren's commercial inventory reflects its history — downtown masonry buildings around Courthouse Square, institutional buildings like Packard Music Hall, and a substantial stock of former manufacturing low-slope along the Mahoning River and out toward Lordstown.
Downtown Masonry, Parapets, and Snow Load
The Courthouse Square buildings are masonry with parapets and internal drains. In a snowbelt city, parapets create drifting — snow piles against the wall and the resulting load and prolonged wetness attack the base flashing first. We scope those roofs by pulling coping and checking the drain sump, not by looking at the field membrane, because that is where they actually fail.
Industrial and Warehouse Low-Slope
The former manufacturing buildings along the river carry large built-up and modified bitumen roofs on steel deck, many with wet insulation from years of untreated leaks. We core sample on a grid before quoting. Dry cores support a TPO recover over coverboard; wet cores mean tear-off. Recovering over saturated insulation in Warren's freeze-thaw climate guarantees a repeat failure.
Drainage Is the Whole Game in the Snowbelt
Ponding water that would merely shorten a membrane's life in a mild climate becomes a freeze-thaw wedge here, working seams open every winter. On Warren commercial re-roofs we specify tapered insulation to correct deflection-caused ponding rather than laying flat over a bowl. It costs more up front and it is the difference between a 15-year roof and a 30-year one.
What Is Commercial Roofing?
Commercial roofing covers the flat and low-slope systems on Warren 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 Warren
- 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 Warren, OH 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 Warren
- •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 Warren
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 — Warren
- Do you handle commercial roofs in Warren and Trumbull County?
- Yes — TPO, EPDM, and modified bitumen on retail, office, church, institutional, and light-industrial buildings.
- Can you repair a leaking flat roof rather than replace it?
- Often. If cores show dry insulation and the failure is at seams, flashing, or a drain, targeted repair plus maintenance is the right call and we will show you the samples.
- How do you handle snow load concerns?
- Drift analysis at parapets and mechanical curbs is part of scoping in the snowbelt, and drainage correction is standard rather than optional on our Warren re-roofs.
- Do you offer maintenance contracts?
- Yes. Semiannual inspection with drain clearing and seam checks, plus a written condition report — especially important on parapet buildings downtown.
Customer Reviews
What Our Customers Are Saying in Warren, OH
Penn-Ohio did good work at a very reasonable price. Other quotes were ~30% higher. Austin got us on the calendar quickly and the team replaces our roof in 6 hours.
Penn Ohio just recently replaced my roof. Removed all the old material down to bare wood, and replaced with beautiful new shingles. Cleaned up all the trash. Everything done in one day! My roof looks great. Thanks Penn Ohio!
I needed some wood and peak repairs done. Penn Ohio was quick to come and provide an estimate. Which was a very good estimate. The work was done with care and in one day. I'm very pleased with the work. They were also very easy to communicate with. I would strongly recommend.
I called Penn Ohio for a roof repair estimate on my home recently. Gary came to my home and I could tell that he cares about doing the best for the customer. He gave me a lot options to choose from and I felt very comfortable and not like he is trying to take advantage of me like other companies. 10/10 guy.
These guys were great to work with. I've dealt with contractors that want to spend two hours of my time hitting me with a PowerPoint followed by high pressure tactics to commit immediately. They offer one price if I sign today but magically
Great company to work with. Gary and his crew were great. They did a very nice job replacing the roof and gutters. The price was aggressive and the cleanup was excellent. Definitely recommend Gary and Dustin for your roofing needs