Top-Rated Commercial Roofing Contractor NYC

Name: Contractor
Brand: Alter Phase Roofing Contracting
Rating: 4.9 (247 reviews)

Reliable, Expert Roofing Solutions for Businesses in New York City

Who We Serve

Apartment buildings & multi-family properties
Office buildings & retail centers
Warehouses, factories & industrial spaces
Schools, houses of worship & public buildings
New developments and construction firms

Year of Experience

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Projects Completed

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Service Locations

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Schedule a Commercial Estimate

Completely FREE Quotes, No Obligation

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 94 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Larisa Rudnik 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wonderful team arrived right on time and did an excellent job. They're professionals as I can judge from work what they did! Very satisfied with their services.
  
 
      Posted on Google  
   
   Mandy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quick, reliable and does OUTSTANDING work. 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 amazing job. They were  friendly, knowledgeable and answered every question we had with confidence. Needless to say I would recommend to anyone who maybe need their roof done !Very hard workers on time too
  
 
      Posted on Google  
   
   Denise Lambert 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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 receipt. My entire new roof was done in one day!  They left the property spotless. The owner was courteous, professional and upfront about the project from beginning to end.  I would gladly recommend this company to anyone. I’m loving my new roof!
  
 
      Posted on Google  
   
   April Odrechowski 
 
 
 
 Trustindex verifies that the original source of the review is Google. The amount of professionalism, sense of urgency, and thoroughness showed by this team is OUTSTANDING! They went above and beyond to assist in storm damage to my Mother’s home. I whole heartedly recommend them!! Pricing is fair, communication is strong, and their work is neat and of the highest quality. Trust them to meet your needs!
  
 
      Posted on Google  
   
   jinchai dong 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mark and his team replaced my roof . They were professional and they cleaned up everything in one day. Highly recommend this company
  
 
      Posted on Google  
   
   Sergio 
 
 
 
 Trustindex verifies that the original source of the review is Google. Awesome service, highly recommended. They are my go to for roof related repairs (have needed them twice, once for gutters another for siding). Best price I've found and the quality of the repairs is great. Always reply fast, easy to get a quote texting them pictures, and super easy to work with and schedule. They have also been careful with my landscaping
  
 
      Posted on Google  
   
   Biao Huang 
 
 
 
 Trustindex verifies that the original source of the review is Google. During this period, I was worried about how to find a roof company. I happened to find this company. After inquiry and understanding, I decided that this company would help me complete all the roof projects. After completion, I felt that I was very satisfied with the service and quality. If I had a chance, I would definitely introduce this company to my friends.
  
 
      Posted on Google  
   
   Mishel Y 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very reliable company, always responds on all questions and does a great job.
  
 
      Posted on Google  
   
   Andrey Klimov 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
  
  
 
 
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