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Roof Warden

Roofing contractor

J&M Roofing

200 Centennial Ave, Piscataway, NJ 08854

Google average
4.7
Ratings counted
76
One and two star
5 of 76(6.6%)
New Jersey median
0%

The first three are Google’s own figures for J&M Roofing, read on 24 September 2026; the share is of every rating Google has counted, not of the review texts on this page. The median is ours — the middle figure among the New Jersey roofers we list with enough ratings to compare.

Rating breakdown

4.7
76 ratings
How the 76 ratings break down, from five stars to one
5
7193%
4
00%
3
00%
2
00%
1
57%
6.6%of these 76 ratings are one or two stars (5)

Higher than most — more than half the roofers in New Jersey have no one or two-star ratings at all. A higher share is a reason to read the critical reviews below, not a verdict.

The critical reviews

The one and two-star reviews, first. These are what a star average hides, and they are the reason this page exists.

All 5 of the one and two-star reviews we hold for J&M Roofing, most recent first.

  • 1 out of 5Ruchi Gupta2 months ago

    I am writing this to warn other homeowners about my experience with J&M Roofing Industries and their contractor, James. James demanded full payment promising the roofing project would be completed by some certain date Instead as soon as the money was exchanged, he completely stopped showing up. The roof is currently left completely unfinished, exposing my home to potential weather damage. I have attempted to call, text, and email James and the main office multiple times over the past 8 months but my messages are completely ignored. This is entirely unacceptable and unprofessional behavior.

  • 1 out of 5Gorav Aggarwal2 months ago

    James the owner took money from me and refuses to finish the work. He keeps giving excuses, that is sick or he is on vacation in Florida etc. Big harassment. All money is already paid I have signed acknowledgment from him.

    Reply from the business

    Thank you for your review. We respectfully disagree with your characterization of the project. The original scope of work was quoted and agreed upon for $10,000. Due to the urgency of the situation, we mobilized a crew of seven and completed the work within two days of receiving the signed agreement and deposit. During the project, additional work was requested that was not included in the original proposal, including gutter cleaning, cleaning roof areas outside the original scope, and removing debris left by a previous roofing contractor. Although these items were not part of our agreement, we completed them in good faith to accommodate your requests. Upon completion of the work, we requested the final payment as agreed. We were advised that payment would be provided the following day because a checkbook was unavailable. After several days of unanswered calls and follow-up attempts, a payment was eventually provided that was $1,000 less than the agreed contract amount, with the explanation that “it was what you felt the work was worth.” The leak condition that we were hired to address had been resolved. After the work was completed, the issue became a dispute regarding payment rather than workmanship. Due to the ongoing payment dispute, the repeated delays, and the unilateral reduction of the contract price after the work had already been completed, we informed you that we would not be performing any additional work beyond the original agreement. We take pride in responding quickly to emergency situations and completing the work we are hired to perform. We regret that this project ended in a disagreement, but we stand by the work completed and the documented scope that was performed.

  • 1 out of 5Trent Blissett11 months ago

    Incredibly rude over the phone. I called to ask some questions before my services and they answered me with attitude saying my questions were obvious. If your looking for a good roofing company with good service this is the LAST place I would recommend.

    Reply from the business

    Hi Trent, we take customer service very seriously, and after reviewing our records, we have absolutely no record of ever speaking with you. We believe this review may have been intended for a different company. J&M Roofing prides itself on treating every customer with respect and professionalism. If you did intend to reach us, please feel free to call our office directly at (732) 797-8646 so we can clarify and assist you.

  • 1 out of 5Gary Koguta year ago

    This company agreed to install a solar attic roof ventilation fan but never completed the work. The fan should have been plugged into a regular outlet inside my attic to run the fan after dark and this was not done, but the installer said he did. Not so. They never provided any instruction on how to set up the wifi connection or even what software to use to do it. They provided no documentation for me to be able to figure this out on my own and were entirely rude when I called to ask for this- never sent. From what I can see they also didn't reinstall the roofing completely around the new fan. Will it leak? In no way would I recommend this company.

    Reply from the business

    Dear Mr. Kogut Thank you for sharing your feedback. We take all customer concerns seriously and want to clarify a few points regarding your experience. Firstly, we apologize if there was any confusion regarding the installation of your solar attic roof ventilation fan. Our records show that the fan was indeed plugged into a regular outlet in your attic, as per standard installation procedures. We understand your concern and encourage you to double-check the outlet to ensure that the fan is receiving power. Regarding the setup of the Wi-Fi connection and software, the make and model of your unit were clearly stated on both the invoice and proposal we provided. This information would have allowed you to easily search for any additional instructions online. We regret that you felt unsupported in this regard and apologize if our communication came across as unhelpful. As for the roofing around the fan, our installation team adheres to strict industry standards to ensure the integrity of your roof which is covered under warranty. We strive for customer satisfaction and are sorry that your experience did not meet your expectations. Please reach out to our customer service team if you have any further questions or require additional assistance. Sincerely, Derrick Scaladetta Foreman J&M Industries

  • 1 out of 5Himelda Mejia5 years ago

    BEWARE of this contractor. I hired him to repair the roof of my two car garage. He was supposed to install a ridge vent and replace the rotten wood boards. Recently, when i had my roof exposed from the inside and discovered there was no ridgevent and he had only replaced four woodboards. James charged me for 16 woodboards. Not to mention it took him 3 weeks to have the debris removed from my driveway and left the 4 woodboards that he replaced on my property. I have tried contacting them and no one responds. I am a senior citizen and am very upset that this company took advantagw of me!

What reviewers keep mentioning

Topics Google extracted from this business’s reviews, with how many mention each. These are words that appeared in reviews, which is not the same as a service the business sells.

  • work quality8
  • leak repair6
  • polite staff5
  • flat roof repair4
  • commercial roof repair4
  • low cost3
  • timely completion3
  • easy process3
  • reliable roofer2
  • punctual crew2

Other reviews we hold

14 more of the 73 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5Adam Coluccia week ago

    James and J&M Roofing did a complete new TPO roof for us and also repaired an EPDM roof. All I can say is excellent work, excellent pricing, and excellent communication. James took the time to explain everything to us. Was responsive. Showed up when they said they would. 10/10 company. Best commercial roofer in New Jersey!

  • 5 out of 5Victor Marques6 months ago

    J&M did a commercial roof repair in Woodbridge for me highly appreciate the help

  • 5 out of 5illusion6 months ago

    James was great they did a commercial TPO roof for me highly reccomend them for new commercial roofs

  • 5 out of 5stoic11 months ago

    Good construction and hospitality. Overall satisfied with the service

    Reply from the business

    Thank you so much!

  • 5 out of 5Leonardo Cachago11 months ago

    The best

    Reply from the business

    Thank you so much!

  • 5 out of 5Jeanette Watkera year ago

    James did a great job on my roof repair

    Reply from the business

    Thank you, Jeanette! We appreciate your kind words. It was a pleasure sending James to work on your roof repair. If you ever need anything in the future, don’t hesitate to reach out!

  • 5 out of 5Freddy Sancheza year ago

    Super service, I applaud myself for choosing J&M ando working with Derrick

    Reply from the business

    Thank you so much, it was a pleasure working on your gutter project!

  • 5 out of 5Wilson Michicoja year ago

    Really appericate the quick timing in repairing the companys TPO roof

    Reply from the business

    We eat, breathe and sleep TPO Wilson! Thank you for the review

  • 5 out of 5Luis Cruz jimeneza year ago

    Great company, they did my flat roof cant Thanks James!

    Reply from the business

    Thanks Luis, it was a pleasure meeting with you. If you need anything in the future please do not hesitate to contact us (732) 797-8646!

  • 5 out of 5Humberto VergaraEdited a year ago

    Hello, good afternoon, I want to thank James and Vito who did a good job. They came to my house and repaired the whole roof and gave me a good estimate. I recommend it. It's a good company that works very well professionally and I'm grateful and happy because now my house has a new roofing

    Reply from the business

    Thank you for your kind words!

  • 5 out of 5Pamela Jonesa year ago

    Richie R called for roof repair on 5/1725. James from J &M Roofing was here repaired by 5/19/25. Thanks for the prompt and Great service, and attention to detail.

    Reply from the business

    We appreciate it. It was our pleasure being your roofing contractor!

  • 5 out of 5Neil HonschkeEdited a year ago

    From my first contact, through discussion on what I wanted done including advice on the best options and methods, through completion of the work James was a pleasure to work with. He is professional, informative and always working to satisfy his customer. He was always available for any questions or last minute changes. J&Ms price was very reasonable, their workers were prompt, polite and incredibly hard working. Our job started on a very very cold day. The crew showed up as scheduled at 7:00 am and got right to work and worked consistently until sundown. Even after the roof replacement, James is working to fix one small remaining, unforeseen, issue that I just mentioned to him. I can’t say enough about how hard they work to satisfy their customer. I would recommend them to anyone.

    Reply from the business

    We appreciate the kind words Neil, it was a pleasure completing your new shingled roof. Thanks!

  • 5 out of 5Tom Brinkerhoffa year ago

    J&M replaced a shed roof for us. They were excellent! They did great work, arrived early, and took extra care cleaning up. I would highly recommend them. Excellent with communication. Fair and terrific work!

    Reply from the business

    Thank you Tom and Michelle! We truly appreciate your kind words and recommendation. It was our pleasure to replace your shed roof, and we’re glad you were happy with our work, communication, and cleanup. If you ever need anything in the future, we’re always here to help!

  • 5 out of 5Ann Richardsa year ago

    J&M did a fantastic job replacing my roof. James was excellent working with me and answering all my questions. Very personable and helpful! Their quote was consistent with other companies and their customer service sealed the deal. The roof looks great, it was super easy and convenient for me, and the yard was immaculate when they were done. I highly recommend them to anyone looking for roofing services. Seethe before and after pics for yourself

    Reply from the business

    Thank you so much, Ann! We truly appreciate your kind words and are thrilled to hear that you had a great experience with J&M Roofing. James and the team take pride in making the process smooth and stress-free, and we’re glad we could deliver the service you deserved. Enjoy your new roof, and thanks again for your recommendation!

What J&M Roofing says about itself

Taken from the business’s own website. We have not checked any of it. These are quotes, not credentials — a roofer writing “licensed and insured” on their homepage is not evidence that they are.

  • Licensed

    “…in the industry, our team of licensed and insured professionals is…”

  • Insured

    “…industry, our team of licensed and insured professionals is committed to…”

  • States a founding year

    “…7-8646 J&M Roofing The New Standard Since 1987 Home Services Residential Roofing…”

  • Free estimates

    “…estimate or contact us to schedule a free consultation and inspection. Commercial Roof…”

  • Financing available

    “…Flexible Financing Options for Commercial Clients We know that…”

Other roofers in Piscataway

Ranked by how many ratings Google has counted.

Other roofers we list in Piscataway
Roofing contractor
Double D Constructionsiding, professional workers, even shingles4.9204 ratings2.9% one and two star(732) 981-0800
CJM Professional Roofing LLCsiding, gutters, gutter replacement5.0113 ratings0% one and two star(973) 755-8491
Altitude Roofing & Remodeling LLCremodeling, attention to detail, punctual crew5.0108 ratings0.9% one and two star(866) 508-8033
Hammer Exteriorssiding, friendly crew, gutter replacement5.092 ratings0% one and two star(973) 442-6637
Lema Home Improvementsgutter repair, siding, ease of process5.082 ratings0% one and two star(973) 757-7968
Carter & Sons Roofingproject, home, job4.868 ratings0% one and two star(551) 324-8900

All roofers in Piscataway →

Where this page comes from

Every figure above is Google’s, captured on 24 September 2026. The star average and the 76 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 76, of which 73 have any text — and it is not everything Google shows.

Roof Warden does not verify licenses, bonds, insurance or workers’ compensation cover, and nothing on this page should be read as though we had. Confirm those directly with the contractor and with your state or provincial licensing body before you hire anyone.