Roof Contractor in Harrison, NJ | Gaby Roofing
Family-owned roofing contractor serving Harrison, NJ for 23+ years from our Union City shop — 15 minutes up the road. Modified bitumen torch down, Tri-Built 985 silicone coatings, Owens Corning shingle work — written warranties, free evaluations, and real work you can see in Harrison right now.
Roofing Services in Harrison
Harrison packs century-old rowhomes, converted industrial buildings, and brand-new PATH-side towers into 1.3 square miles — and almost all of it lives under a flat or low-slope roof. That is the exact roof type we have specialized in for 23+ years.
Flat Roofing
Modified bitumen torch-down and Tri-Built 985 silicone coatings — the systems built for Harrison’s rowhome and multi-family flat roofs.
Learn more →Shingle Roofing
Owens Corning architectural shingles for the pitched roofs on Harrison’s single-family streets and the Kearny blocks next door.
Learn more →Exterior Siding
Hardie board, vinyl, and full façade replacements — paired with roofing for whole-exterior projects.
Learn more →Why Flat Roofs Dominate Harrison
Harrison is Hudson County at its most concentrated. Between the Passaic River and the Kearny line, block after block of attached two- and three-family frame homes went up for the factory workers of the early 1900s — nearly all of them under flat or low-slope roofs, many carrying several generations of old roofing layers. Add the new residential buildings around Harrison PATH and Red Bull Arena, and you have a town where flat-roof expertise is not optional.
Full flat roof replacement in Harrison — complete tear-off and new modified bitumen system on a multi-family rowhome.
Rowhome Blocks, Party Walls, and Layered Roofs in Harrison
Harrison’s blocks are tight. Attached frame homes share party walls, roof access often means going straight up the front of the building, and staging happens on narrow streets where every parking spot matters. We plan tear-offs around that reality — protection for the neighbors’ rooflines on both sides, debris chuted to a single curb position, and materials loaded the same day they go on the roof.
What unifies Harrison’s older roofs is layering. Many of these homes have been re-roofed three or four times since the 1920s without a single tear-off, which adds dead weight, traps moisture between membranes, and lets leaks wander far from where they show up inside. Our default on a failing layered roof is a full tear-off down to the deck — the only way to fix the substrate and properly reset the clock.
Drainage follows the same logic. Harrison flat roofs typically drain to rear scuppers or interior drains that clog with decades of gravel and debris, and low spots from settled framing pond water long before the membrane fails. Every replacement we do corrects pitch with tapered insulation and rebuilds the drainage path — water that leaves the roof can’t leak through it.
Most layered rowhome roofs we open up show moisture trapped between old membranes — damage that never shows in a surface inspection. It’s why we quote from the roof, not from the sidewalk.
Harrison Roofing Permits, Inspections & The Construction Code Office
Roof replacements in Harrison run through the Town’s Construction Code Office at Town Hall, and we handle that paperwork as part of the job — permits filed, inspections scheduled, final sign-offs documented for your records.
- Scopes that document decking, flashing, and existing layer count — what inspectors actually want to see on Harrison’s older rowhomes
- Permits for Harrison’s attached two- and three-family frame homes as well as detached properties
- Filings for mixed-use and converted industrial buildings between the PATH station and the redevelopment waterfront
- Coordination on occupied multi-family buildings — tenants stay dry and doorways stay clear while we work overhead
Town Hall · 318 Harrison Ave, Harrison, NJ 07029
The 25% Rule in Harrison
Harrison’s older flat roofs carry decades of patches, and patches add up. New Jersey’s roofing code draws a hard line: repair more than a quarter of the roof within a year, and the entire roof must be brought up to current code.
The regulation works like this: total up the roof area you repair or replace over any 12-month period, and if it passes 25%, the project is a replacement in the eyes of the code. The full roof then has to meet today’s standards — ice-and-water shield, drip edge, proper underlayment — and layer limits can force a complete tear-off besides. A Harrison homeowner chasing leaks that travel between old roofing layers can cross that 25% line faster than expected — each patch counts toward the total. Our estimates state plainly where your roof sits relative to the threshold and what each path costs: patch it, coat it with silicone, or replace it right. Crossing the line unknowingly is how owners end up with failed finals and resale problems.
For Harrison homeowners this matters because patchwork on an aging, layered flat roof spends money twice — you pay for repairs that can’t last, then pay again for the replacement the code was always going to require. We’ll tell you honestly which side of the 25% line your roof is on before you spend a dollar.
Why it matters: doing this wrong opens you up to permit revocation, failed inspections, and insurance issues at sale time.
Local Roofing Company Minutes from Harrison
Gaby Roofing is based at 4404 Kennedy Blvd in Union City — about 15 minutes from any address in Harrison or East Newark. That matters when a membrane splits in a February freeze or a scupper backs up in a summer downpour: we’re close enough to show up the same day, and local enough that you’ll see our trucks on the same blocks year after year.
Gaby Roofing is family-owned, 23 years in, licensed, bonded, and insured under NJ HIC #13VH11705800. Damian is on every job — the person who quotes your roof is the person on it. We serve Harrison, East Newark, and Kearny alongside our core Hudson County towns. Hablamos español — atendemos a las familias de Harrison en su idioma.
What Our Clients Say
Recent Google reviews from homeowners and property managers across Hudson County.
“It’s always a pleasure to work with Damian and his crew. This is our third project with Gaby Roofing because they offer competitive prices and excellent work.”
“Julio and his crew were incredible. We called after noticing a leak in our roof and Julio sent his guys over the following week. They were on time and professional.”
“Highly recommend Gaby Roofing. They were professional, responsive, and respectful of my property as well as my neighbors. Provided pictures throughout the process.”
Roofing FAQ — Harrison
Get a Free Harrison Roof Inspection
Layered old roofs don’t announce their problems — an inspection does. Gaby Roofing will check your membrane, flashing, drains, and scuppers, and give you a straight answer on repair versus replacement. Free, and usually within the week.