Most commercial buildings in Chambersburg and North Trenton still sit on old built-up roofs that crack when summers hit ninety plus and winters drop below freezing. The daily expansion and contraction opens seams fast. We switch those to TPO sheets with welded laps because the material holds up better under UV and ice. Cheap crews skip the insulation layer and that leads to code fails on Mercer permits.
A common mistake we see is crews using residential shingles on low-slope commercial decks. Water sits and finds every nail hole within two seasons. We always check for proper slope and add tapered insulation where needed. Buildings near Cadwalader Park get extra wind clips because gusts off the river tear edges loose.
Flat roof drains clog with leaves and tar balls every spring. When that happens water ponds and pushes through the membrane at the seams. We replace the drains with cast iron ones that tie into the existing leaders and add strainers. This stops most callbacks on jobs in South Trenton and East Trenton.
Call 609-555-0199 for a same-day look at any commercial leak. We show up with a lift and give straight numbers on the spot. No guesswork after we cut test holes.
Commercial Roofing Services We Offer
✓Emergency Commercial Roof Repair Trenton NJ
We patch active leaks on flat roofs the same day using reinforced TPO patches that hold through the next storm.
✓TPO Roof Installation Commercial Buildings
Full TPO membrane replacement takes three to five days on most Trenton shops and keeps heat out during summer peaks.
✓EPDM Roof Replacement Mercer County
We tear off old rubber and lay new sixty mil EPDM with ballasted edges on larger office roofs in under a week.
✓Commercial Roof Leak Inspection Trenton NJ
Core samples and infrared scans locate hidden moisture on decks near the Trenton Battle Monument before it spreads.
✓ADA Compliant Roof Access Hatch Install
We cut in code-rated hatches with safety rails on commercial buildings so crews can reach equipment without ladders.
Commercial Roofing Cost in Trenton, NJ
| Service | Typical Range | What Affects It |
|---|---|---|
| Repair commercial roof leak | $650–$1,800 | Size of patch and whether deck needs repair |
| Install TPO on 5,000 sq ft building | $9–$13 per sq ft | Higher when old insulation stays in place |
| Full EPDM replacement on flat roof | $8–$12 per sq ft | Depends on tear-off layers and access |
| Add tapered insulation and new drains | $3–$5 per sq ft | Extra for custom cricket layouts |
| Free commercial roof estimate | Free | Call to schedule a same-day visit |
Ranges are typical for Trenton, NJ and confirmed with an exact written quote before any work starts.
How it works
- 1
Site visit and core test
We walk the roof same day, cut test holes, and check deck condition in under two hours.
- 2
Written scope and material pick
You get a one-page list with TPO or EPDM options and a start date inside forty-eight hours.
- 3
Tear off and prep
Old layers come off down to deck, rotted boards get swapped, and we install new insulation boards.
- 4
Membrane weld and flash
Sheets weld in place, all penetrations get boots, and edges receive termination bars.
- 5
Final walk and drain test
We flood the roof, check every seam, and hand over photos before we leave.
Pricing
Most jobs land between eight and fifteen dollars per square foot. Bigger roofs and thicker insulation push the high end.