TPO Roofing Installation & Repair in NYC
TPO is a white, single-ply membrane whose seams are welded with hot air, forming a continuous waterproof surface. It suits the flat and low-slope roofs found on NYC apartment buildings, storefronts and warehouses. East NYC Roofing, in business 20 years, installs and repairs TPO systems across the five boroughs, Nassau and Westchester.
- 20 years in business
- 10-year warranty on replacements
- Within 2 hours for leaks
- Free written estimate
Problems this solves
- Ponding water and recurring leaks on an aging flat roof
- Cracked, blistered or alligatored tar and gravel surface
- Open seams or lifted flashing at walls and curbs
- Rooftop that runs hot and drives up summer cooling load
- Leaks around vents, drains and rooftop equipment
- Punctures from foot traffic or HVAC service visits
- Wet insulation that no longer performs
- Patch after patch that never fully stops the leak
- Old membrane shrinking and pulling away from parapets
TPO Roofing explained
TPO (thermoplastic polyolefin) is a single-ply roofing membrane sold in wide rolls. Installers lay the sheets over insulation and join overlaps with a hot-air welder, so the seam fuses into one piece instead of relying on adhesive alone. The standard white surface reflects sunlight, which helps keep the roof and the top floor cooler. TPO is a strong fit for flat or low-slope roofs on apartment buildings, commercial and mixed-use properties, and warehouses, and for owners who want a clean, lighter-weight alternative to built-up tar roofs. It is less suited to roofs with heavy grease exposure or very complex shapes, where another membrane may be the better choice.
Options and materials
Mechanically attached
Sheets are secured with fasteners and plates through the seams into the deck. A common, economical method for larger roofs where the deck can accept fasteners.
Fully adhered
The membrane is bonded to the insulation or cover board with adhesive. Gives a smooth, tight finish and suits roofs with limited fastening options or high wind exposure.
Over new insulation
New tapered or flat insulation boards go down first to improve drainage and thermal performance, then the TPO membrane is installed on top.
Recover over existing roof
In some cases TPO can go over an existing roof after inspection. Only possible when the old layers are dry and the structure and local rules allow it.
Targeted TPO repair
Cutting out damaged areas and welding in new membrane, re-flashing penetrations and resealing seams when the rest of the roof is sound.
Our process
- Inspect and moisture checkWe examine the membrane, seams, drains and flashings, and check for wet insulation so the scope is based on what is actually under the surface.
- Written estimate and permitsYou receive a free written estimate. Where work requires NYC DOB filings or board approvals, we handle the roofing side of the paperwork.
- Tear-off or prepOld roofing is removed or the existing surface is prepared, damaged deck and wet insulation are replaced, and the area is protected below and around the work.
- Insulation and slopeInsulation and cover board are installed, with tapered sections where needed to move water to drains and reduce ponding.
- Membrane and welded seamsTPO is installed, then every seam is hot-air welded and probed. Walls, curbs, drains and penetrations are flashed with matching components.
- Final walkthroughWe clean the site, sweep for debris, take photos of the finished work and review the warranty terms with you.
What affects the price
Roof size and shape
Larger, simple roofs cost less per square foot than small roofs with many corners, steps and penetrations that need extra cutting and flashing labor.
Attachment method
Fully adhered systems use more material and labor than mechanically attached ones, while deck type determines which method is even allowed.
Insulation requirements
Added or tapered insulation to meet energy code and fix ponding changes material quantity and installation time.
Tear-off vs recover
Removing old layers adds labor and disposal. Recovering is cheaper up front only when the existing roof is dry and sound.
Access and logistics
Tall buildings, tight streets and hoisting needs affect crane, labor and material-handling time on NYC jobs.
Flashings and details
Parapets, drains, curbs, skylights and rooftop equipment each add flashing work that can raise or lower the total.
Getting a price
Because these factors change from roof to roof, we don't publish one-size-fits-all prices. We inspect your roof for free and give you a written, itemized estimate before any work starts.
Every tpo roofing job includes
- Free written estimate and roof moisture check
- Permit handling where required for the work
- Protection of the property, entrances and landscaping
- Hot-air welded seams, checked along their length
- New flashing at walls, drains, curbs and penetrations
- Dumpster and debris removal
- Jobsite cleanup and magnetic sweep of the surrounding area
- Photo documentation before and after
- 10-year warranty on full roof replacements; written workmanship warranty on repairs, terms on our warranty page
Written workmanship warranty on every job; full roof replacements carry our 10-year warranty. Warranty terms.