Roof replacement on Staten Island, with up to 50-year warranties in writing
A new roof is one of the biggest checks you'll write for your home. We keep it simple: an honest inspection, a written, itemized price, a clean install by our own crew, and warranties that last decades.
- Full tear-off down to the deck, with rotted wood replaced
- Up to 50-year manufacturer and 25-year workmanship warranties
- Permits, dumpsters and cleanup included in the price
- 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.
A roof replacement on a Staten Island home typically costs $10,000–$30,000. Asphalt shingles run $3–$10 per sq ft installed, and a 1,000 sq ft flat roof $5,000–$13,000. Most homes are finished in a single day. Replace when the roof is 20+ years old, leaks in several places, or the deck is soft.
- 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
Signs it's time for a new roof
- Your roof is 20 years old or more (asphalt shingles typically last 20–30 years)
- Leaks in more than one place, or the same leak keeps coming back
- Curling, cracked or bald shingles across large areas, often on the side facing the wind
- A sagging or spongy feel, or daylight through the attic boards
- Granules piling up in gutters and downspouts
- You're selling soon and the roof is near the end of its life
If only one area is damaged, a repair may be all you need. We'll tell you which, and show you the photos.
What a new roof costs on Staten Island
Most Staten Island homes, from colonials and capes to high-ranches and two-families, have pitched roofs, and architectural asphalt shingles run $3–$10 per sq ft installed. Flat roofs over extensions and garages run $5–$14 per sq ft depending on the system. Staten Island is usually the least expensive borough for roofing because driveways and wider streets make staging and debris removal easier.
The price tables and estimator below show the ranges for your roof size. For the full breakdown, read our roof replacement cost guide.
What's included in every replacement
Full tear-off
Old shingles and underlayment removed down to the deck and hauled away.
Deck inspection
Every sheet checked; soft or rotted wood replaced. See roof sheathing explained.
Underlayment & leak barriers
Synthetic underlayment over the whole roof, with ice and water protection at eaves, valleys and penetrations.
New flashing
Fresh metal at chimneys, walls, valleys and vents. Reusing old flashing is one of the most common shortcuts in roofing.
Shingles or membrane
GAF architectural shingles for pitched roofs; TPO, EPDM or modified bitumen for flat roofs.
Cleanup & walkthrough
Magnetic nail sweep of the yard and driveway, final walkthrough with you, and your written warranties.
What homeowners worry about
Can I trust the price?
You get a written, itemized estimate after a free inspection, usually within 24 hours. Permits, dumpsters and cleanup are included in the price. If we find rotted decking, you see the photos.
What about my yard and driveway?
We cover shrubs and AC units, keep debris in the dumpster, and run a magnetic sweep for nails before we leave.
Who's actually on my roof?
Our own crew, not subcontractors. Owner Marke is part of every job and checks the work at the end.
What if something goes wrong in ten years?
You have up to 25 years on our workmanship and up to 50 years from the manufacturer, in writing. As a GAF Master Elite® contractor, we install complete GAF roofing systems and offer GAF system warranties of up to 50 years.
Choosing the right material
Architectural asphalt shingles are the best value for most Staten Island homes, and wind-rated shingles hold up better to nor'easters and coastal wind on the South and East Shores. Metal costs more but lasts much longer. Compare the options in our guide to the best roofing materials for New York homes.
Who you're hiring
Alter Phase Roofing Contracting is a family-owned roofer based on Staten Island, with 19+ years in roofing. We're BBB Accredited, licensed by NYC DCWP (#2129904-DCWP), fully insured, and rated 5.0 stars across 154 reviews, 109 of them on Google. We replace roofs across the Island, from Westerleigh and Castleton Corners to Rossville, Annadale and Prince's Bay.
Next step: call or text (929) 370-1552 for a free inspection with photos. Want the full picture first? Read our roof replacement guide on permits, costs and choosing a contractor.
What roof replacement costs on Staten Island
Averages from our own jobs. Your exact price comes in writing after a free inspection.
New asphalt shingle roof, installed · Staten Island
New flat roof, installed · Staten Island
Alter Phase Roofing Contracting job averages, updated October 26, 2026. Your exact price comes from a free on-site inspection.
- Tear-off, cleanup and disposal
- Up to 50-yr material + 25-yr workmanship warranty
- Permit filed if your job needs one
Final price depends on layers to remove, deck condition and access. We confirm it in writing after a free inspection.
Get my exact price, free or call (929) 370-1552Might only need a repair? Most roof repairs cost $300–$1,200. We'll tell you honestly. Roof repair
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!”
“I called for an estimate for a new roof. The price they quoted was way below two other estimates I received. I was also told that it would take 1-2 days to complete. Everything Alter Phase Contracting Inc promised was delivered. They gladly supplied me with their licensing and insurance information. The warranty is printed on my…”
“Just WOW! I expected that this would take several days, they got my new roof done in just 1 day. The guys did a thorough job, from set up to clean up. The price quoted was the price I paid, no gimmicks. True Staten Islanders. My roof looks great, couldn't be more happier. Would recommend to anyone who asks.”
“Marke and his team did an excellent job on replacing my roof! He and his brother came to my house, climbed up the roof to investigate the condition unlike other contractors which were only using a drone to take pictures. He gave me honest opinion and options for replacing my roof. Great communication and very easy to work with during…”
“I called a few roofers & Alter Phase was the only one that returned my call promptly & showed up the next day to give the estimate. They were very detailed in their explanation and immediately put me at ease. They showed up 3 days later and did the work in one day. Every worker on the job was courteous and friendly. My house now…”
“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…”
Roof replacement: your questions, answered
Don't see yours? Call or text and you'll talk to someone who actually works on roofs.
(929) 370-1552Roof replacement: common questions
How much does a new roof cost on Staten Island?
Most replacements cost $10,000 to $30,000. A 1,200 sq ft asphalt shingle roof is roughly $3,600 to $12,000, and a 1,000 sq ft flat roof is typically $5,000 to $13,000. Layers to remove, deck repairs, roof steepness and access change the final number.
How long does a roof replacement take?
Most homes are done in a single day: tear-off, new roof and cleanup. Larger or more complex roofs, or roofs that need major deck repairs, can take longer. Weather can shift the start date.
Do I need a permit to replace my roof?
Replacing the roof covering like-for-like on a one- or two-family home often doesn't need a DOB permit. Changing the roof type, replacing the structural deck and some full replacements do. We check this for every job and file when it's required.
Can you install a new roof over my old one?
Sometimes, but we usually don't recommend it. A full tear-off lets us inspect and fix the deck, install proper underlayment and flashing, and keeps manufacturer warranties fully valid.
What warranty comes with a new roof?
Up to 50 years on materials from the manufacturer and up to 25 years on our workmanship, both in writing.
Do I need to be home during the replacement?
No, but we'll walk the job with you before we start and after we finish. Expect noise during the tear-off; pets are usually happier elsewhere that day.
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.