Bergen County’s Roofing & Renovation Experts
From roof replacements to full home renovations, GDC Contracting Inc. brings five decades of experience to every project. We’re your trusted local contractors for roofing, siding, windows, and more—licensed, insured, and proudly family-owned.

50+ Years of Proven Excellence
Decades of trusted craftsmanship in every project.

Family-Owned & Community-Focused
Built on relationships, not just results.

Fully Licensed & Insured
Certified and covered for your peace of mind.

A+ BBB Rated
Recognized for reliability and integrity.
Our Services
Building Trust, One Project at a Time
From minor updates to major improvements, we bring decades of experience, precision, and care to every job. Whether you’re refreshing your home or taking on a full-scale project, GDC Contracting delivers results that last. Residential or commercial—no job is too big or small.

Roofing
We offer durable roofing options—metal, slate, tile, and asphalt—designed for curb appeal, performance, and year-round protection for homes and businesses.

Siding
GDC Contracting offers vinyl, wood, Hardie Board, and more—durable siding options that enhance appearance, resist wear, and suit any architectural style.

Windows
Upgrade your windows for better energy efficiency, durability, and value—choose from wood, vinyl, aluminum, or fiberglass to match your home and goals.

Remodeling
Whether for function or value, remodeling adds lasting impact. GDC Contracting handles everything from major upgrades to small improvements—start to finish.

Why Choose GDC?
We are a family owned and operated business for more than 51 years in Bergen County. When you want the job done right the first time, you call GDC contracting. We are GAF certified which means we are properly licensed, fully insured, committed to ongoing professional training and we have a proven reputation. Our priority is to ensure your total satisfaction. Your experience with GDC Contracting will be worry-free and hassle-free. We stand behind our work and craftsmanship. It is said that you get what you pay for, and with GDC Contracting, what you get is a job well done to last for years to come.
Most people think that a new roof is nothing more than just nailing up some shingles. GAF® roofing contractors know better — so we recommend the highest quality materials to prevent common problems like leaks and water damage. Choose a fully licensed and insured contractor with experience.
GDC Contracting is dedicated to providing a quality product to our customers. Our responsibility is to guide our clients and provide solutions that fit their needs. We take great pride in our craftsmanship and a quality job.
Accredited Business with the Better Business Bureau (BBB), GAF® roofing certified, AAA Affiliation, and Angie’s List. Always choose a licensed and insured contractor.
Get Started with a Free In-Home Estimate Today
GDC Contracting Inc has been Bergen County’s most trusted name in roofing, siding, replacement windows and remodeling for more than 50 years. Our company has had your trust because not only do we select premium building materials when it matters most, we care about being energy and cost efficient. We value honesty, integrity, and true craftsmanship. Our goal is to provide total customer satisfaction without compromise. GDC Contracting will take you through the steps of the remodeling or construction process, so there are no surprises. We want you to be satisfied, not only with the final product, but every step of the way. Find out how we’re different…
Kathy Kim
Rocky and his crew are awesome! Rocky is a professional who knows a lot about roofing and construction in general. His prices are very fair and competitive and quality is excellent. Rocky and his team has completed several projects for me (new roof on our home and painted cabinetry in our kitchen) and the excellent work was completed on time and communication was great all around. I would highly recommend GDC!
Caryn Mota
Rocky and his guys are true gems! They have replaced my roof, built a deck around my pool, renovated a laundry/full bathroom and did a massive kitchen renovation complete with the installation of a huge load bearing steel beam. His team is professional, clean and respectful of my home. Rocky is also super easy to work with and a straight shooter. He’s not going to try and upsell something or tell you what he thinks you want to hear. He’s going to be honest and fair. I highly recommend them!!
Linda Woodward
We had a great experience working with Rick at GDC Contracting! We have wanted to replace our picture window for several years and Rick was the first contractor who could picture our vision. The window is just beautiful, the price was reasonable and we have gotten so many compliments. Rick was a pleasure to work with, he responded quickly whenever I reached out and his team did great work! Highly recommend!!
Craig C
We hired GDC to construct a Trex deck for our backyard. Rocky and team did a fantastic job! Rocky did a great job communicating the entire job from planning to inspection. They took care of all the logistics with ordering materials and inspections with the town. The deck came out great. You can see their work product is very professionally done. I highly recommend Rocky and team!
Beverly Malabrigo
I can wholeheartedly recommend this contractor. GDC transformed our 100+ year old house with new siding , windows & gutters. The entire crew worked super hard at addressing all re-construction needs including planning , master carpentry and a highly skilled installers. Everyone was so friendly & responsive I would enthusiastically recommend them.
Kathy Kim
Rocky and his crew are awesome! Rocky is a professional who knows a lot about roofing and construction in general. His prices are very fair and competitive and quality is excellent. Rocky and his team has completed several projects for me (new roof on our home and painted cabinetry in our kitchen) and the excellent work was completed on time and communication was great all around. I would highly recommend GDC!
Caryn Mota
Rocky and his guys are true gems! They have replaced my roof, built a deck around my pool, renovated a laundry/full bathroom and did a massive kitchen renovation complete with the installation of a huge load bearing steel beam. His team is professional, clean and respectful of my home. Rocky is also super easy to work with and a straight shooter. He’s not going to try and upsell something or tell you what he thinks you want to hear. He’s going to be honest and fair. I highly recommend them!!
Linda Woodward
We had a great experience working with Rick at GDC Contracting! We have wanted to replace our picture window for several years and Rick was the first contractor who could picture our vision. The window is just beautiful, the price was reasonable and we have gotten so many compliments. Rick was a pleasure to work with, he responded quickly whenever I reached out and his team did great work! Highly recommend!!
Craig C
We hired GDC to construct a Trex deck for our backyard. Rocky and team did a fantastic job! Rocky did a great job communicating the entire job from planning to inspection. They took care of all the logistics with ordering materials and inspections with the town. The deck came out great. You can see their work product is very professionally done. I highly recommend Rocky and team!
Beverly Malabrigo
I can wholeheartedly recommend this contractor. GDC transformed our 100+ year old house with new siding , windows & gutters. The entire crew worked super hard at addressing all re-construction needs including planning , master carpentry and a highly skilled installers. Everyone was so friendly & responsive I would enthusiastically recommend them.
Kathy Kim
Rocky and his crew are awesome! Rocky is a professional who knows a lot about roofing and construction in general. His prices are very fair and competitive and quality is excellent. Rocky and his team has completed several projects for me (new roof on our home and painted cabinetry in our kitchen) and the excellent work was completed on time and communication was great all around. I would highly recommend GDC!