01Drone Inspection
We fly the roof before quoting. You see every slope, valley and flashing on the estimate.

Full roof replacements, leak repairs, flat roofs and chimney flashing for Belvidere homeowners. Our own crews, GAF-certified installation, and a drone inspection on every Belvidere job, free with your estimate.



Belvidere, the Warren County seat, sits where the Pequest River meets the Delaware River, and it is known for its Victorian streetscape around the courthouse green. The town even holds an annual Victorian Days celebration. Many homes are 19th century, with steep roofs, decorative trim, porches, and in some cases slate. Repairs here often call for care to keep the original look.
Victorian and 19th century multi-story homes near the center, plus mid-century houses on the edges. Asphalt shingles are common, with slate on some older houses.
Every Belvidere 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: White
See all Warren County roofing
Chimney reflash
Skylight
Flat roof coatingSteep pitches, dormers, porches, and towers on Belvidere's Victorian homes create many flashing points that need careful work.
Older slate roofs often need replacement of broken pieces and new flashing rather than a full tear-off.
The Delaware River valley brings humidity and fog, which keeps shaded roof sections damp.
Full replacements and repairs. Both done by our own crews, both photographed from the air.

Full tear-off
Finished HDZ roofComplete roof tear-off and engineering replacement using heavy-duty synthetic underlayments (Stinger/FeltBuster), ice & water shields, ridge ventilation, and GAF Timberline HDZ shingles.
Full removal of existing shingles down to the wooden decking, replacing any compromised wood sheets.
Installation of Stinger & GAF FeltBuster synthetic underlayment for 5x stronger tear-resistance than old felt paper.
Applied in all valleys, eaves, and penetrations to prevent water backup from NJ winter freeze-thaw cycles.
North America's #1 selling shingle with LayerLock technology and WindProven Unlimited Wind Warranty.
Engineered attic intake and exhaust ventilation to lower summer cooling bills and prevent moisture buildup.

Pipe boot reseal
Chimney flashingFast, 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.
Using thermal/moisture detection to isolate hidden leaks around valley flashing, pipe boots, and chimney junctions.
Immediate response following heavy NJ severe weather, high winds, hail, or fallen tree limb damage.
High-grade silicone coating application over EPDM/modified bitumen flat roofs for 100% waterproof seal (as seen in our photos).
Precision lead & copper step-flashing replacement to prevent recurring water intrusion.
Matching existing shingle color and replacing damaged or rotted underlying plywood decking.

Silicone restoration over EPDM and modified bitumen.

Step flashing, crickets and counter-flashing done right.

Curb-mounted skylights, ridge vents and pipe boots.

Find it, fix it, photograph it. Same-week scheduling.
Every photo below is from a Pro Gen job site. This is the same sequence your roof goes through.
01We fly the roof before quoting. You see every slope, valley and flashing on the estimate.
02Everything comes off, down to the deck. No layering new shingles over old problems.
03Rotted plywood replaced, then ice and water shield at every eave, valley and penetration.
04Heavy-duty synthetic barrier over the whole deck. Your roof is dried-in the same day.
05GAF 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.
Most full replacements in Belvidere 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.
Belvidere is a town, and roofing permits go through the construction official that serves the town. Belvidere has a locally designated historic district, so homes inside it may need Historic Preservation Commission review before exterior changes. Pro Gen handles the application, fees, and the final inspection for you.
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.
Yes. Emergency leak and tarp calls in Belvidere are dispatched the same day. We stop the water first, photograph the cause from the air, then quote the permanent fix.
Exterior changes in the historic district may require review, especially if you are changing materials. Check with the town before work begins, and we can supply product details to support the application.
Every other Warren County town we serve. Same crew, same drone, same warranty.
Tell us the address and what you're seeing. We'll fly the roof, send you the photos, and quote it straight.
Tap a deal and it rides along with your estimate request so the office has it on file before we call you back.
Take $500 off any complete tear-off and GAF Timberline HDZ replacement.
New Pro Gen customers only. Applies to full replacements.
Thank you for your service. 10% off any repair or replacement, no cap.
Military ID, DD-214, or VA card at the estimate.
5% off any job for homeowners 65 and older. Fixed-price, no surprises.
Photo ID at the estimate. Homeowner must be on the deed.
$150 off any leak or flashing repair over $500 for first-time customers.
Repairs with a total over $500. One per address.
Send a neighbor our way. When their replacement is booked, you get a $250 credit or check.
Paid after the referred job is completed. Unlimited referrals.
Aerial inspection of every slope with a written photo report you keep, whether you hire us or not.
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