GJ Contracting & Roofing LLC

From a simple inspection to an entire job
we are here for all your Construction needs.
Serving all of New Jersey

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About GJ Contracting

We are a family-owned business with over 25 years of experience in the roofing industry. We tailor ourselves to our clients and aim to provide a great experience. We want to create a relationship with the customer in which you will feel glad to call us years down the line.

Who we are, honest and trustworthy

Rated Five Stars by Your Neighbors

Tyler Soto
Tyler Soto
2022-03-24
Would definitely recommend this company!! Excellent customer service and workmanship
Emilio Ruano
Emilio Ruano
2022-03-19
Joshua and his father were the best Contractors I’ve ever done business with! Very responsive and great at communicating. They made me feel sure that I was getting the best service possible and at a fair price! Very satisfied with the work done by the team. I definitely recommend them to anyone looking for help with contracting or roofing. Amazing!
Brian Rivas
Brian Rivas
2022-02-21
Aaron McGuire
Aaron McGuire
2022-02-21
Very good people
Zack Neal
Zack Neal
2022-02-21
Nicest people in the business
Alexander Ortiz
Alexander Ortiz
2022-02-01
All around great service with these guys. From start to finish I was satisfied and now me and my family can sleep well knowing we were serviced by the best roofing business in NJ!
Cindy Watson
Cindy Watson
2022-01-13
My neighbor and I both had our roofs replaced by GJ Co tracting & Roofing. We are very pleased with their workmanship, punctuality and the time that Josh took to explain everything in detail. They did a fantastic job and we highly recommend this company. Thank you Josh for your professionalism and the outstanding work that you and your team provided.
Martha P
Martha P
2021-12-22
I would highly recommend Josh and his team for anyone looking to get their entire roof replaced. I was very impressed from beginning to end, from receiving a quote quickly and doing an immediate repair on a roof leak, to getting the entire roof replaced. Josh took the time to hear all my concerns and respond to every question I asked. The workmanship, including prep and cleanup was excellent. I would absolutely hire GJ Contracting again. Thank you very much for a great job!
Neil Sulish
Neil Sulish
2021-12-13
Josh is great. These guys spend the extra time to make sure you are satisfied!!! They installed a custom door, storm door and flashed it. If you are looking for quality without any headaches they are your one call. I would definitely recommend.
Leeann Finsel
Leeann Finsel
2021-12-10
Would definitely recommend...very professional, friendly, affordable and always in contact with us. We had new gutter installed and they did all of our siding work. We are extremely happy, cant wait to call them back out when we are ready to do our stone veneer. Cant thank them enough. Don't hesitate to call them, you won't be disappointed.

Construction Services

Roofing Inspection

Recently had your roof replaced and want to make sure it was done right? We can inspect your roof for quality and provide a full written report including pictures of your roof. Make sure your investment was well worth your money

Vinyl Siding Installation

Vinyl Siding Installation

We can service any type of siding needs. We will walk you through the process and be sure that your siding will give you the protection you need from the elements while also having the curb appeal that you desire.

Gutter installation

Gutter Installation

When replacing your roof or siding, new gutters may also be a good investment. We highly recommend state of the art aluminum gutters that are rust proof and are sure to not leak. We will even provide a guarantee!

Roofing crew

Roofing Repair & Replacement

Whether it's a small leak giving you a headache or an entire roof needing replacement, we are sure to assist you. All roofing replacements also come with an installer and product warranty!

Skylight Installation

Skylight Installation

Skylights are a growing trend that has allowed for homeowners to bask in natural light and make a once dim space turn into the most lit space in your household.

window installation

Window Installation

The best way to save money in energy costs is through new windows. You could be spending hundreds a year from expenses literally going out your window in the form of heat and A/C.

Perfect Installs

Your roof is your home's main defense against the elements. Let us walk you through the best options to fit your needs and once you feel comfortable with your choice, we'll handle the complete installation.

Reliable Upgrades

If you're looking to update or upgrade your roofing and gutters, we've got you covered. Book a free consultation to discuss our six different types of roofing composition and environmentally friendly options!

Upkeep & Repair

Age and environmental factors can wreak havoc on your roof. Ignoring problems for too long can cause headaches down the road. Start with a free inspection today!

Why Hire Our Roofing Contractors In Mercer County, NJ?

If you are searching for a reliable company in Mercer County for your roofing installation and repairs, our team is ready to help. At GJ Contracting, we specialize in providing excellent service at affordable prices to all of our customers. We do that by offering high-quality materials so the installation will last longer and be easier to maintain. Combined with our highly trained technicians in Princeton, NJ, these features make us an unbeatable choice for your next project.

As full-service roofing companies, we take pride in our ability to provide solutions for any problem. We have worked with many customers over the years and have always gone the extra mile to meet their needs. Our services in Princeton, NJ, include residential and commercial roof installation, replacement, and repairs.

Why Choose GJ Contracting? 

  • 25+ years of experience 
  • Full-service contractor 
  • Free inspections & estimates
  • & More 

 

Professional Roofing Contractor in Mercer County, NJ

You will never worry about any damage or property loss during our installation and roofing repair services. Our roofing contractors in Hamilton, NJ, are fully insured and licensed so that we can protect you from any unnecessary risks. When you leave your house in our care, we promise to take the utmost care of it so that the project runs smoothly without any complications like other roofing companies.

We get results quickly so you can give your house a new look in as little time as possible. We also have friendly and helpful roofing contractors in Bucks County, PA, and New Jersey, who will work with you to meet your needs and exceed your expectations.

 

We Promise To Deliver a Final Product That You Will Love!

We Promise To Deliver a Final Product That You Will Love!

Our team of professionals is dedicated to providing excellent service at a price you can easily afford. As the best roofing company in Burlington, NJ, we understand the importance of getting value for your hard-earned money, so we make sure that we give it back to you in the form of comprehensive services. We promise to exceed your expectations to ensure you are always satisfied with our results.

Schedule An Appointment With Us Today

If you are tired of the high cost of roof replacements, call us for a free inspection and estimate. This service is available Monday through Friday from 8 AM to 5 PM EST. Our roofers in Princeton, NJ, are experts in replacing roofs or repairing them to get them back in good condition for many more years of use. You can also count on GJ Contracting for durable shingles that resist the weather and natural calamities. Stop by our office in Hamilton, NJ, so that we can discuss your specific needs.