01Drone Inspection
We fly the roof before quoting. You see every slope, valley and flashing on the estimate.
Mercer County, New Jersey
Roofer in Trenton
Repair & Replacement
Full roof replacements, leak repairs, flat roofs and chimney flashing for Trenton homeowners. Our own crews, GAF-certified installation, and a drone inspection on every Trenton job, free with your estimate.
How a Trenton roof gets doneReal Pro Gen jobs
1Tear-off
2Dried-in
3Finished
Leak response
Same day
Drone inspection
Free with estimate
Warranty
50-yr GAF
Crew
In-house
Roofing in Trenton
Why Trenton homeowners
call Pro Gen.
Trenton is the state capital, a dense city along the Delaware River with neighborhoods like Mill Hill, Chambersburg, and the West Ward. Much of its housing is 19th and early 20th-century rowhouses, twins, and Victorian homes, many with flat or low-slope roofs. Historic districts preserve some of the city's oldest blocks.
Attached rowhouses and twins with flat or low-slope roofs, plus Victorian and early 20th-century homes with steep gables and slate or shingle.
Every Trenton estimate starts with a drone flight. You get the photos whether or not you hire us, so you know exactly what's up there before you spend a dollar.
Neighboring towns we also roof: Ewing, Hamilton, Lawrence
See all Mercer County roofing
Chimney reflash
Skylight
Flat roof coatingLocal conditions
What we check on Trenton roofs
Flat roof maintenance
Rowhouses with flat roofs need membrane systems, sound seams, and clear drains to stay watertight.
Historic districts
Trenton has locally designated historic districts, such as Mill Hill, where exterior work goes through the city's historic preservation review.
Shared walls
Attached homes need careful flashing at parapets and party walls so work on one roof does not affect the neighbor.
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 resealChimney 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.
0102Full 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.
Trenton questions
Roofing questions from Trenton
How much does a new roof cost in Trenton?
Most full replacements in Trenton land between $7,500 and $22,000 depending on roof size, pitch, layers to remove, and the shingle you choose. Repairs usually run $350 to $1,850. The drone inspection gives you an exact number, free.
Do I need a permit to replace a roof in Trenton, NJ?
Trenton is a city, and its construction office issues the roofing permit. Homes in a local historic district, such as Mill Hill, also need historic preservation review. Pro Gen handles the application, fees, and the final inspection for you.
How long does a roof replacement take in Trenton?
Most homes are torn off, dried-in and shingled in one to two days. Larger or more complex roofs can run a third day. Your roof is never left open overnight.
Can you fix a leak in Trenton today?
Yes. Emergency leak and tarp calls in Trenton are dispatched the same day. We stop the water first, photograph the cause from the air, then quote the permanent fix.
My Trenton rowhouse has a flat roof that keeps leaking. Should I recoat it or replace it?
If the membrane is mostly sound, a coating or targeted repair can extend its life. If it has multiple failures or water under the surface, a new membrane system is usually the better value. Our drone inspection will show which applies.
Mercer County
Also roofing near Trenton
Every other Mercer County town we serve. Same crew, same drone, same warranty.
Free estimate
Ready when you are,
Trenton.
Tell us the address and what you're seeing. We'll fly the roof, send you the photos, and quote it straight.
Deals & promotions
Current offers.
Claim one with your estimate.
Tap a deal and it rides along with your estimate request so the office has it on file before we call you back.
- $500 off
Full roof replacement
Take $500 off any complete tear-off and GAF Timberline HDZ replacement.
- For
- New customers
- Code
- NEWROOF500
New Pro Gen customers only. Applies to full replacements.
- 10% off
Veterans & active military
Thank you for your service. 10% off any repair or replacement, no cap.
- For
- Veterans, active duty, reserves
- Code
- VET10
Military ID, DD-214, or VA card at the estimate.
- 5% off
Senior homeowners 65+
5% off any job for homeowners 65 and older. Fixed-price, no surprises.
- For
- Homeowners age 65 and over
- Code
- SENIOR5
Photo ID at the estimate. Homeowner must be on the deed.
- $150 off
Your first repair
$150 off any leak or flashing repair over $500 for first-time customers.
- For
- First-time customers
- Code
- FIRSTFIX150
Repairs with a total over $500. One per address.
- $250 credit
Refer a neighbor
Send a neighbor our way. When their replacement is booked, you get a $250 credit or check.
- For
- Past customers
- Code
- NEIGHBOR250
Paid after the referred job is completed. Unlimited referrals.
- Free
Drone inspection & photo report
Aerial inspection of every slope with a written photo report you keep, whether you hire us or not.
- For
- Every homeowner
- Code
- FREEDRONE
Owner-occupied homes in our 13 counties.
Mention the code when we come out for the estimate. One offer per household, cannot be combined with other offers. Proof of eligibility required for veteran and senior discounts.
Questions? (862) 222-1016