4.5 
627 *The Angi rating for Roofing companies in Williamstown, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Roofing needs.
*The HomeAdvisor rating for Roofing companies in Williamstown, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Roofing needs.
Last update on November 19, 2025
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Garden State Roofing Is the roofing company you want to hire for your roofing needs top notch we are very satisfied with our new roof how it looks and the crew is excellent."
+23
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"I contacted Done Rite Roofing after noticing missing shingles. They responded quickly and repaired the roof the same week. Solid workmanship and fair pricing."
Serving Williamstown, NJ and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Credit card accepted
"I highly recommend this company. They just finished replacing my roof - they did the roof in a timely fashion ahead of schedule and the roofer did an amazing job."
Serving Williamstown, NJ and surrounding areas
Approved
Super Service Award Winner
In business since 1952
Free estimates
Warranties offered
"J Cwanger and Jeff the owner did an amazing job on my roof. Extremely professional and masters at their craft! If you’re in need of a new roof or siding look no further than this company! 5 stars all around!"
+7
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"One of the best experiences I had with the roofing company. A few days after heavy rains, I was getting water leaking into my garage from the roof. Dan came by to assess the roof. Danâ s team was was very thorough and did a great job with my roof inspection/repair. I highly recommend this company for your roof needs."
+4
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"This experience was second to none! EVERYONE on the team was respectful, and professional throughout the entire project. The sales rep. and project manager carefully listened, and helped us decide on a roofing system that was right for our home. All materials were delivered on time, and before the project began, as promised. The supervisor arrived well before the roofing technicians. The lead technician, and technicians arrived on time, made the introductions, and immediately began the work. My home, and property were protected from the removal of roofing materials, at all times. There are often unforeseen issues that arise with construction projects, and I was consulted every step of the way, BEFORE any action was taken! My roof was completed on time. The technicians took pride in their craft, and their mastery was evident in the beauty of our new roof. The yard was left free of all roofing debris, it was if no one was ever there. My recommendation is an enthusiastic YES!"
+7
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"Had roof tare down and new roof put on. Very happy with the work and clean-up."
+22
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2012
Free estimates
Credit card accepted
"They did a phenomenal job soft washing my house. Highly recommend Roof Wizard !!"
+3
Serving Williamstown, NJ and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"if you are in the need for a new roof,....then look no further.Veteran Roofing is the BEST.They will work with you when you think there is no way to get a new roof.I'am a Vietnam Veteran, and if I hadn't found Veterab Roofing, I would have never gotten the new roof on my home.These guys are the best around.You don't have to be an Vet to get this kind of service, but if you are a Veteran then you can rest asure they will take care of you.Call them today,....you will be glad you did."
+113
Serving Williamstown, NJ and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"I recently hired Great Group Roofing and couldn?t be happier with the experience. From the initial estimate to the completed roof installation, the team was professional, punctual, and highly skilled. They kept the worksite clean, communicated clearly throughout the project, and completed the job on schedule. The quality of workmanship exceeded my expectations, and my new roof looks fantastic. If you?re looking for a reliable roofing company that delivers excellent service and quality results, I highly recommend Great Group Roofing!"
+15
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