Penn Ohio Roofing
Commercial Roofing in New Castle, PA
In-house crews out of our Sharon, PA shop.
New Castle's commercial inventory is mostly older low-slope — downtown storefronts around the courthouse square with built-up roofs from the 1970s, former industrial buildings along the river repurposed to warehouse, and strip retail on the US-422 corridor.
Downtown Built-Up and Modified Bitumen
The buildings around the courthouse square and along Washington Street mostly carry gravel-surfaced built-up roofs or modified bitumen laid over them. Those systems fail at the perimeter and at parapet-wall base flashing long before the field gives out. On a downtown New Castle building with a shared party wall, the first question is always whose parapet it is, and we get that resolved in writing before scoping.
TPO and EPDM Retrofits
For most New Castle low-slope work the practical answer is a mechanically attached TPO or a fully adhered EPDM over new polyiso, with tapered insulation to correct the ponding that decades of deck deflection created. We core-sample before quoting so the number accounts for saturated insulation instead of discovering it at tear-off.
Working Around an Operating Business
Retail on 422 and offices downtown cannot close for a roof. We phase by section, keep tear-off open only to what we can dry in the same day, and schedule noisy deck work outside customer hours where the tenant needs it. Roof-mounted HVAC curbs get new flashing and, where the unit is being replaced anyway, we coordinate so the curb is only opened once.
What Is Commercial Roofing?
Commercial roofing covers the flat and low-slope systems on New Castle 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 New Castle
- 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 New Castle, 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 New Castle
- •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 New Castle
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 — New Castle
- Do you work on commercial buildings in New Castle?
- Yes — low-slope TPO, EPDM, and modified bitumen on retail, office, church, and light-industrial buildings across Lawrence County.
- Can you repair rather than replace a commercial roof?
- Often, yes. If core samples show the insulation is dry and the failure is confined to seams or flashing, a targeted repair plus a maintenance program buys years. We will show you the cores.
- How long does a commercial roof last around here?
- TPO and EPDM systems in this climate typically run 20 to 30 years with maintenance. Freeze-thaw and ponding are what shorten it, which is why tapered insulation matters more here than in a dry climate.
- Do you offer maintenance agreements?
- Yes — semiannual inspection with drain clearing and seam checks. On a downtown New Castle building with parapets and internal drains it is the cheapest insurance available.