Project · Commercial roof replacement · Little Falls Township, Passaic County
Commercial roof replacement in Little Falls Township, NJ: a worn built-up roof becomes a new TPO system
4.9 stars on Google60+ reviewsFamily-owned12 years of roofing experience
In progress, October 2026
A two-story office and retail building in Little Falls Township carries a large flat roof crowded with rooftop units. The old gravel built-up roof, coated silver and patched again and again, comes off completely, and new insulation and a TPO roof system go on while the businesses inside stay open.
- Registered & insured NJ HIC Reg. #13VH12667100
- Family-owned in Paramus, NJ
- Free written estimates, no obligation
The project
What we found on this Little Falls roof
- Little Falls Township, Passaic County, NJ. Roof photographed by drone in January 2026
- Two-story office and retail building with a large flat roof and about twenty rooftop heating and cooling units
- Full tear-off of the old gravel built-up roof, down to the deck
- New polyiso insulation over the deck
- New TPO roof system with heat-welded seams; every unit, curb, pipe and edge flashed in
- The businesses in the building stay open throughout
- Contractor: ProTech Roofing & Exterior, NJ HIC Reg. #13VH12667100
Built-up roofing is the old way of making a flat roof: layers of felt mopped in hot asphalt and finished with gravel. At some point this one had been coated silver, and after that it was patched, in roof cement and in more coating, wherever it leaked. When we photographed it from the air in January 2026 the coating had worn off large areas, the surface had cracked into the pattern roofers call alligatoring, and the marks of standing water showed where the low spots were. The real trouble on a roof like this is not the open field but the edges of things. The rooftop units alone, each on its own curb or stand, plus the vents, pipes and a satellite dish, make dozens of places where water gets in once the roofing around them gives up.
A coating cannot fix a surface this far gone, and a recover over wet, crumbling layers only traps the moisture underneath. The right answer was a full tear-off: everything off down to the deck, then a new roof built up in order, with the insulation and every flashing detail planned in from the start instead of added later.
Step by step
How the new roof goes on, with the building open
- The building keeps working. Deliveries, lift time and the loudest work are planned around the tenants’ hours, entrances are kept clear and safe, and the site is cleaned up at the end of every day. Nobody inside has to close.
- Tear-off in sections. The old roof comes off section by section, and each opened section is made watertight again before the crew leaves, so the roof is not left open to an overnight storm.
- The deck, checked. With the old layers off, the deck is in plain view. Anything that needs attention is dealt with before the first board of insulation goes down.
- New insulation. Flat polyiso insulation boards go on over the deck, adding insulation value and giving the membrane a solid, even base.
- The TPO membrane. TPO is rolled out over the insulation and its seams are heat-welded, so the laps are fused rather than glued. Every rooftop unit, curb, pipe and vent is flashed in the same material, and the edges are flashed in as well.
- Finished photos to come. When the last seam is welded we photograph the finished roof and add the pictures to this page.
A commercial replacement or recover carries a 5-year workmanship warranty, plus a manufacturer system warranty of 15 to 30 years where the roof qualifies, depending on the membrane and how it is installed. The full process is on our commercial roof replacement page, and the membrane itself on the TPO roofing page.
Photos
The job in photos
Our own drone and job-site photos. Click or tap any photo to see it full size.
View this photo full size (opens in a new tab)Before, January 2026: the whole roof from above. A silver coating worn away over gravel built-up roofing, patches over patches, the marks of standing water, and about twenty rooftop units, each needing its own flashing. 
View this photo full size (opens in a new tab)Before: the building from the air. Two floors of offices and shops under one large flat roof. 
View this photo full size (opens in a new tab)October 2026, up close: the old roof with its coating worn through to the gravel, cracked and patched. Materials for the new roof are already staged at the far end. 
View this photo full size (opens in a new tab)October 2026, tear-off under way: the gravel and silver coating already scraped off the near section, showing the alligator-cracked asphalt layers that come off next, bundles of polyiso insulation standing ready at the right, and the crew working beyond the rooftop units.
Little Falls and Passaic County
Commercial roofing in Little Falls Township and the rest of Passaic County
Little Falls Township sits in southern Passaic County, bordered by Woodland Park, Totowa, Wayne and Clifton, and by Cedar Grove, Montclair, North Caldwell and Fairfield across the Essex County line. The township has its share of flat-roofed offices, shops and small industrial buildings like this one: built-up, modified bitumen or an aging single-ply membrane, with heating and cooling equipment on top. ProTech Roofing serves Little Falls and the rest of Passaic County from Paramus with commercial roof repair, replacement and recover, maintenance plans that start with an inspection, and roof coatings on commercial roofs that are still sound enough for one. Homes here, from Great Notch to Singac, get the same written estimate with photos for roof repair and roof replacement.
Reviews
What customers say about our flat and commercial roof work
Copied word for word from Google, where we cannot change a word.
“We had a great experience working with this roofer. He did an excellent job on our business property—very professional, reliable, and detail-oriented. The work was completed on time and the quality exceeded our expectations. Highly recommend him for any roofing work! Thanks Ervin.”
— Kartik P., Google review “Erwin and his crew were extremely skilled and professional. They repaired my damaged flat roof just in time before 5 days of rain. I highly recommend!”
— Megan G., Google review
Questions
Commercial roof replacement in Little Falls: common questions
Can a commercial roof be replaced while the building stays open?
Yes. On this Little Falls job the offices and shops stay open throughout. The roof comes off and goes back on in sections, deliveries and the loudest work are timed to the hours the tenants keep, entrances are kept clear, and the site is cleaned up every day.
Why tear this roof off instead of coating it or putting a new membrane over it?
A coating only works on a roof that is still sound underneath, and a recover traps whatever moisture is already in the old layers. This roof has worn through its coating, cracked across the surface and been patched many times, so the old layers come off down to the deck and the new roof is built up from there, insulation first, then the membrane.
What is a TPO roof?
TPO is a single-ply roofing membrane that is rolled out over the insulation and fastened or adhered to the roof. Its seams are joined with hot air, which fuses the sheets together rather than gluing them. The same material is used to flash every unit, pipe and edge, so the whole roof is one continuous system. It is one of the most common roofs on commercial buildings in North Jersey.
Do you handle other commercial roofs in Little Falls and Passaic County?
Yes. Repairs, replacements, recovers and maintenance plans on TPO, PVC, EPDM and modified bitumen roofs across Little Falls, Woodland Park, Totowa, Wayne, Clifton and the rest of Passaic County. Every proposal comes in writing with photos.
Flat roof on a building in Little Falls or Passaic County?
Call, or send the form and we will get back to you to arrange a time to look at your roof. You get a written proposal with photos, planned around your business hours.