01Drone Inspection
We fly the roof before quoting. You see every slope, valley and flashing on the estimate.
Roofing in Mercer County
Mercer County
Roof Repair & Replacement
Historic Princeton homes, Hamilton and Ewing developments, and Trenton row houses. Flashing and chimney repairs, flat roof coatings, and full replacements. Pro Gen Construction serves all 12 Mercer County towns with in-house crews, GAF-certified installation, and a drone inspection on every job.
Mercer County at a glance
- County seat
- Trenton
- Population
- 387,000+
- Towns served
- 12
- Leak response
- Same day
Princeton & Hamilton ServiceHistoric & Slate-to-Shingle Work
Mercer County
Every Mercer County town we roof
Each town has its own page with local details, photos from nearby jobs, and a direct line to the crew.
Why homeowners here call us
Built for
Mercer County roofs.
Historic Princeton homes, Hamilton and Ewing developments, and Trenton row houses. Flashing and chimney repairs, flat roof coatings, and full replacements.
Local crews
We're on roofs in Mercer County every week, so scheduling and emergency response are quick.
Drone inspection
Every estimate starts with a flight. You see every slope and flashing in the photos before you decide.
GAF Certified Contractor
Factory-certified installation qualifies full replacements for the GAF System Plus 50-year warranty.
No subcontractors
Our own foreman and crew from tear-off to cleanup. One company accountable for the whole job.
What we do
Two jobs.
Done properly.
Full replacements and repairs. Both done by our own crews, both photographed from the air.
Pro Gen job site
Dried-in, day one
Full tear-off
Finished HDZ roof50-Year Non-Prorated Warranty50-Year GAF Material + 10-Year Workmanship
Complete Roof Replacement System
Complete roof tear-off and engineering replacement using heavy-duty synthetic underlayments (Stinger/FeltBuster), ice & water shields, ridge ventilation, and GAF Timberline HDZ shingles.
01
Complete 100% Tear-Off & Deck Inspection
Full removal of existing shingles down to the wooden decking, replacing any compromised wood sheets.
02
Synthetic Underlayment Protection
Installation of Stinger & GAF FeltBuster synthetic underlayment for 5x stronger tear-resistance than old felt paper.
03
GAF WeatherWatch Ice & Water Shield
Applied in all valleys, eaves, and penetrations to prevent water backup from NJ winter freeze-thaw cycles.
04
GAF Timberline HDZ Architectural Shingles
North America's #1 selling shingle with LayerLock technology and WindProven Unlimited Wind Warranty.
05
Cobra Ridge Ventilation & Soffit Airflow
Engineered attic intake and exhaust ventilation to lower summer cooling bills and prevent moisture buildup.
Typical range
$7,500 - $22,000+
On site
1 - 2 Days Complete
Pro Gen job site
Leak repair, aerial check
Pipe boot reseal
Chimney flashingFast 1-2 Hr Dispatch10-Year Workmanship Guarantee
Roof Repair & Emergency Leak Service
Fast, reliable roof leak diagnostics and structural repair across all North New Jersey towns. Available 24/7 for storm damage, emergency tarping, flashing leaks, and flat roof repairs.
01
Active Leak Diagnostic & Repair
Using thermal/moisture detection to isolate hidden leaks around valley flashing, pipe boots, and chimney junctions.
02
24/7 Emergency Storm Tarping
Immediate response following heavy NJ severe weather, high winds, hail, or fallen tree limb damage.
03
Flat Roof Coating & Sealing
High-grade silicone coating application over EPDM/modified bitumen flat roofs for 100% waterproof seal (as seen in our photos).
04
Chimney Cricket & Flashing Repair
Precision lead & copper step-flashing replacement to prevent recurring water intrusion.
05
Single Shingle & Plywood Deck Repair
Matching existing shingle color and replacing damaged or rotted underlying plywood decking.
Typical range
$350 - $1,850
On site
2 - 6 Hours
Also on every truck
Flat Roof Coating
Silicone restoration over EPDM and modified bitumen.
Chimney & Flashing
Step flashing, crickets and counter-flashing done right.
Skylights & Vents
Curb-mounted skylights, ridge vents and pipe boots.
Leak Repair
Find it, fix it, photograph it. Same-week scheduling.
How a Pro Gen roof gets built
Five steps. One crew.
Zero shortcuts.
Every photo below is from a Pro Gen job site. This is the same sequence your roof goes through.
01
02Full Tear-Off
Everything comes off, down to the deck. No layering new shingles over old problems.
03Deck & Ice Shield
Rotted plywood replaced, then ice and water shield at every eave, valley and penetration.
04Synthetic Underlayment
Heavy-duty synthetic barrier over the whole deck. Your roof is dried-in the same day.
05Shingles & Final Flight
GAF architectural shingles, ridge vent, cleanup, then a final drone pass you get to keep.
Most residential replacements are torn off, dried-in and shingled within one to two days.
Common questions
Mercer County roofing questions
Do you cover every town in Mercer County?
Yes. All 12 municipalities in Mercer County, from East Windsor to West Windsor. Pick your town below for its own page.
How fast can you get to a leak in Mercer County?
Emergency leak and tarp calls are dispatched the same day, usually within one to two hours depending on where our crews are working. Call the number at the top of the page.
Who pulls the roofing permit?
We do. Permit requirements vary by town in Mercer County, and our office handles the application, fees, and inspection scheduling so you don't have to.
Do you use subcontractors?
No. The crew on your roof works for Pro Gen Construction, and the same foreman runs the job from tear-off to cleanup.
Free estimate
Ready when you are,
Mercer County.
Tell us the address and what you're seeing. We'll fly the roof, send you the photos, and quote it straight.