Top-Rated Commercial Roofing Contractor NYC

Reliable, Expert Roofing Solutions for Businesses in New York City

Who We Serve

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Need a Commercial Roofer in NYC You Can Trust?

When you’re managing a business or a commercial property in New York City, the last thing you need is a failing roof disrupting your operations. At Alter Phase Roofing Contracting, we provide reliable, high-performance commercial roofing solutions tailored for NYC’s unique architecture, weather conditions, and building codes.

From small storefronts to massive industrial facilities, we’ve helped countless property owners and facility managers with commercial roof repair, replacement, and new installations throughout Manhattan, Brooklyn, Queens, The Bronx, and Staten Island.

Licensed & Insured in NYC

Fully compliant with DOB codes and requirements

NYC Flat Roof Specialists

TPO, EPDM, Modified Bitumen, Torch-Down Systems

Minimal Disruption to Business

We work fast, clean, and around your schedule

Experienced Commercial Crews

Certified, manufacturer-trained installers

Clear Proposals, Transparent Pricing

No surprises, no gimmicks, no shortcuts

Emergency Leak Repairs Available

24/7 response when you need us most

We've got the awards to back up our work!

Our Commercial Roofing Services in NYC

Commercial Roof Repairs

Leaks, storm damage, ponding water, and flashing failures. We fix it fast and correctly the first time.

Full Roof Replacements

We’ll assess your current system and install a new roof built to withstand NYC’s weather, foot traffic, and building codes.

New Commercial Roof Installations

Working with builders, architects, or directly with property owners for new construction or major expansions.

Flat Roofing Systems

TPO, EPDM, Modified Bitumen, Torch-Down Roofing

Comprehensive Services

Alter Phase Roofing offers a full suite of roofing solutions, from timely repairs to complete new installations, ensuring all your rooftop needs are covered.

Affordable Pricing

We believe quality roofing should be accessible. Alter Phase Roofing provides competitive pricing and helps you find solutions that fit your budget.

24/7 Availability

Roofing problems don't always happen on a schedule. Alter Phase Roofing offers 24/7 availability for emergency situations, so you're never left in the rain.

Guaranteed Results

We stand behind our work. Alter Phase Roofing provides warranties on both materials and workmanship, giving you confidence in your roof's long-term performance.

Fast and Efficient

Alter Phase Roofing delivers prompt project completion and efficient service, minimizing disruption to your home or business.

Convenient Scheduling

We make the process easy. Alter Phase Roofing offers flexible scheduling and clear communication, so your roofing project fits seamlessly into your life.

When Storms Strike, We Respond.

Storms can be devastating, but help is here. Alter Phase Roofing provides fast emergency tarp services, thorough damage assessments, expert repairs, and insurance claim assistance to get your business back on track.

Need emergency help?
Call right away.

SIMPLE, EFFECTIVE PROCESS

STEP 1

Free Roof Inspection: Schedule a no-obligation inspection to assess your roofing needs.

STEP 2

Customized Solutions: We'll review your roof and propose the best options.

STEP 3

Quality Execution: Our skilled team performs the agreed-upon work efficiently.

STEP 4

Enjoy Peace of Mind: Relax and enjoy the comfort of a well-maintained roof.

Our Recent Projects

With years of experience and a commitment to excellence, we're the roofing company you can trust.

We've completed hundreds of projects in NYC over the last 10 years.

PVC Roofing System Installation

Manhattan, NY

TPO Flat Roof

TPO Roofing in NYC

Flat Roof Replacement

Brooklyn, NY

EPDM Roof Install

NYC

Our customers love us (and we think you will too!)

We are proud to have earned the trust and confidence of our customers through our commitment to excellence and exceptional service.

      EXCELLENT  
   Based on 108 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   KT 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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!
  
 
      Posted on Google  
   
   Larisa Vollis 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great job. Highly recommend. Appreciate their fantastic service
  
 
      Posted on Google  
   
   Dee 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional team and would definitely recommend for roofing. They took the time to answer all my questions and gave me details on the scope of work in terms I could understand. The team arrived on time, went straight to setting up and began working. I was notified on completion for verification and they left the working area cleaner than it was originally. Thank you very much for your services.
  
 
      Posted on Google  
   
   Christy Chen 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent job! The roofing team was professional, reliable, and did a great job replacing my roof . They worked efficiently, paid attention to detail, and cleaned everything up when they were finished. Highly recommend!
  
 
      Posted on Google  
   
   Argjent Marke 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a great experience with Alter Phase Roofing. From the beginning, they were professional, courteous, and very easy to work with. They did an excellent job replacing my roof, and the quality of their work really shows.

The crew was efficient, paid attention to detail, and left the property clean when the job was completed. Their pricing was also very reasonable and fair, which I really appreciated.

I’m very happy with the finished roof and would definitely recommend Alter Phase Roofing to anyone looking for a reliable, professional, and fairly priced roofing contractor. Great job!
  
 
      Posted on Google  
   
   Yoyo Liu 
 
 
 
 Trustindex verifies that the original source of the review is Google. The roofing team performed exceptionally well, demonstrating superb craftsmanship and meticulous attention to detail throughout the process of removing the old roof and installing the new one. I sent a message and received a reply in less than five minutes. The service was top-notch, and the workmanship was excellent. I would recommend this company 100% and will certainly choose them again for any future needs.
  
 
      Posted on Google  
   
   Damien DiMaggio 
 
 
 
 Trustindex verifies that the original source of the review is Google. I just had my roof replaced and we couldn’t be happier with the result. They were very thorough and professional and got the job done right before a storm. Perfect timing! We are very pleased with the whole process, the owners took us through step-by-step on what to expect with the project. We would definitely recommend Alter Phase Roofing!
  
 
      Posted on Google  
   
   John chen 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 problem after weeks .
I am highly recommended Alter Phase Roofing Contracting.
  
 
      Posted on Google  
   
   Ariton Dika 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had a great experience with this guys. They were very professional. They did an excellent job. I’m very happy with job. I would highly recommend them.
  
 
      Posted on Google  
   
   Hysen Shtylla 
 
 
 
 Trustindex verifies that the original source of the review is Google. Highly recommend Alter Phase Roofing! They were professional, efficient, and did an exceptional job. The quality of work is outstanding.
  
 
  
  
 
 
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