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 Andover Borough homeowners. Our own crews, GAF-certified installation, and a drone inspection on every Andover Borough job, free with your estimate.



Andover Borough is a compact village on Route 206 in central Sussex County, with roots in the colonial iron forge era. Its streets hold a mix of older wood-frame houses, a handful of stone buildings, and later 20th century homes. Roofs here tend to be steep gables that shed snow well but have aged framing, older chimneys, and flashing that has been patched more than once over the decades.
Expect older two-story gabled houses alongside mid-century capes and ranches. Most carry asphalt shingles today, sometimes laid over older roofing that should come off at replacement time.
Every Andover Borough 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: Andover Township, Byram, Green
See all Sussex County roofing
Chimney reflash
Skylight
Flat roof coatingOlder Andover homes often have rafters and plank decking that predate modern codes, so a tear-off is the time to check for sagging or soft boards before new shingles go down.
Many village homes still have masonry chimneys, and worn step and counter flashing around them is a common source of attic leaks after heavy rain or snowmelt.
Central Sussex winters bring repeated freeze and thaw, so ice and water shield along eaves and valleys matters on every replacement.
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 Andover Borough 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.
Andover Borough is a borough, and roofing permits go through the construction official that serves the borough. Andover Borough is separate from Andover Township, so make sure the permit is filed with the right municipality. 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 Andover Borough are dispatched the same day. We stop the water first, photograph the cause from the air, then quote the permanent fix.
No. They are two separate municipalities with their own permit handling. We confirm which one your address falls in before filing so the roofing permit goes to the right office.
Every other Sussex 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