Commercial roof replacement on Staten Island, planned around your business
When repairs stop making sense, a new commercial roof should be a planned project, not a surprise. We give Staten Island owners a clear written scope, handle NYC permits and code rules, and install a system built to last decades.
- TPO, EPDM, PVC and modified bitumen systems
- DOB permits, cool-roof and LL92/94 checks handled
- Manufacturer system warranty + our workmanship warranty
- 5.0 from 154 reviews
GAF Master Elite®- Lic. #2129904-DCWP
Get your free roof estimate
Step 1 of 3Takes 30 seconds. A real person from our team calls you back, usually within the hour.
Replacing a commercial flat roof on Staten Island typically costs $9–$16 per sq ft depending on the system (TPO $9–$14, PVC $10–$16, modified bitumen $9–$13), insulation, layers to remove, access and permits. Replace when wet insulation is widespread, leaks keep coming back, or the roof is 20+ years old.
- Free inspection with photosYou see exactly what we see
- Written price in 24 hoursItemized, no pressure
- Most roofs done in 1 dayTear-off to cleanup
- Up to 50-yr warrantyPlus 25 yrs on workmanship
When to replace a commercial roof
- Repeated leaks in different places despite repairs
- Wet insulation over large areas (spongy spots, blisters)
- The roof is 20+ years old or past its manufacturer warranty
- Widespread seam failure, shrinkage or cracking
- You're adding solar, HVAC or a roof deck and the existing roof won't outlast them
Not sure? A commercial roof inspection with photos will show whether a repair, recover or full replacement makes sense. If a repair will buy you several good years, we'll tell you.
What a new commercial roof costs
The biggest price drivers are the system you choose, how many old layers come off, how much insulation is wet, and how easy the roof is to reach. Staten Island usually costs less than the other boroughs because streets are wider and staging is easier. The price tables below show current ranges per square foot, and our roof replacement cost guide goes into more detail. Permit costs are included in your written estimate.
Our commercial replacement process
- Inspection and scope. We document the roof, check insulation and drainage, and write a detailed scope with material options.
- Permits and compliance. DOB filing, cool-roof requirements and Local Law 92/94 review, plus the paperwork your owner or board asks for.
- Scheduling. A start date and daily plan built around your customers, tenants, deliveries and parking.
- Installation. Tear-off or recover, deck repairs, tapered insulation for drainage, membrane, flashing and edge metal, installed to manufacturer specifications.
- Closeout. Final inspection, permit sign-off, photos and warranty documents.
Systems we install
TPO
Our most common commercial system. Reflective, heat-welded seams and strong value. See the TPO roofing guide.
PVC
For restaurants and roofs exposed to grease or chemicals.
EPDM
A budget-friendly choice for smaller roofs and simpler layouts.
Modified bitumen
Where foot traffic and rooftop equipment are heavy.
Compare them all on our flat roofing page.
Why Staten Island owners hire us
Alter Phase Roofing Contracting is family-owned, based on Staten Island, with 19+ years in roofing. Owner Marke is part of every job, and our own crew does the work. We're a GAF Master Elite® contractor, BBB Accredited, licensed by NYC DCWP (#2129904-DCWP) and fully insured. Certificates of insurance are available before work starts.
Next step: call (929) 370-1552 to book an inspection. You'll usually have a written scope and price within 24 hours.
What commercial roof replacement costs on Staten Island
Averages from our own jobs. Your exact price comes in writing after a free inspection.
New flat roof, installed · Staten Island
Flat roof replacement by borough (≈1,000 sq ft)
Alter Phase Roofing Contracting job averages, updated October 26, 2026. Your exact price comes from a free on-site inspection.
From first call to finished roof.
No pushy salespeople and no surprise bills. Every job follows the same four steps.
- Fast scheduling
We inspect your roof
We climb up, scan for hidden leaks with an infrared camera, find the real cause and take photos so you see exactly what we see.
- Within 24 hours
You get a written quote
Clear options, repair or replace, with materials, cleanup and permits itemized. No pressure.
- On your schedule
Our own crew does the work
Marke is part of every job. We protect your property and clean up every day.
- Final walkthrough
Warranty in writing
Up to 50 years on materials and up to 25 years on our workmanship, handed to you.
What Staten Island customers say
“Called them up thinking I needed a new roof and gutters. They stopped by the same day, gave me an assessment of everything and it turns out the roof was repairable. They didn't try to pressure me into any unnecessary work. Just simply he gave me a couple of prices depending on what I decided to do. They were able to schedule the job quickly for a few days later and by the middle of the afternoon everything was done and it looks great!”
“10/10 would recommend! This is the second time I've used this company, and they've been excellent both times. The first time was a few years ago for a full shingle replacement. Most recently, I called them back to repair my flat roof and gutter system after a rough winter caused pooling and a leak. They came out the very next day to…”
“Alter Phase Roofing Contracting is a very good company. My new roof they installed just in one day, very professional and responsive. Clean very nice after the job and very friendly. The new roof has withstood several heavy rainstorms without any leaks. They are very respectful to come back inspected whole roof to make sure no any…”
“Quick, reliable and does OUTSTANDING work. We had a leak on our roof and made calls and left messages. They were the only company that called me back with in 10 min, they gave me an appointment the same day to come out and check out our roof. When we agreed to use them they were back here in 2 days to replace the roof and did an…”
“Marke and his team did an outstanding job replacing the roof on my 3 story house. From the quick estimate, to the finished product, they took pride, protected my house and property 100%. Marke also found a few bad spots, showed me and kept me informed as repairs were made. There were NO HIDDEN CHARGES!! I can't say enough about them.…”
“I had a great experience with this roofing construction company. The team was professional, reliable, and very knowledgeable from start to finish. They arrived on time, explained everything clearly, excellent work from beginning to end! I'm very happy with the results and would definitely recommend this roofing company to anyone who…”
Commercial roof replacement: your questions, answered
Don't see yours? Call or text and you'll talk to someone who actually works on roofs.
(929) 370-1552Commercial roof replacement: common questions
How long does a commercial roof replacement take?
It depends on size, access and weather. Small commercial roofs can take a few days; larger buildings take longer. You get a schedule with the written estimate, and we work in sections so the building is watertight every night.
Should we tear off the old roof or recover it?
A recover over the existing roof can be allowed when there's only one layer and the insulation is dry. If the insulation is wet or there are already several layers, a full tear-off is required and is the better long-term investment.
What are Local Laws 92 and 94?
They are NYC laws from 2019 that can require a sustainable roofing zone, such as solar panels or a green roof, on new roofs and certain full replacements. Whether they apply depends on the building and the scope. We check before you sign and plan for it.
Does a white TPO roof really save energy?
A reflective roof absorbs much less heat than a dark one. That helps keep top floors cooler in summer and eases the load on rooftop AC. NYC's cool-roof rules require reflective surfaces on most low-slope roofs for that reason.
Can we repair instead of replacing?
Often, yes, if the insulation is mostly dry and the problems are local. A commercial roof inspection with photos shows which situation you're in, and we'll price both when it's close.
Get an honest answer about your roof.
Free inspection, photos of what we find and a written quote. If it only needs a repair, we'll tell you.
Prefer to talk? Call or text, emergencies 24/7:
(929) 370-1552- Family-owned, Staten Island based
- Owner on every job
- Written warranties, permits handled
Get your free roof estimate
Step 1 of 3Takes 30 seconds. A real person from our team calls you back, usually within the hour.