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about j. great roofing commercial
Serving Local Businesses
J. Great Roofing & Siding is a Certified roofer with GAF.
GAF is North America’s largest roofing manufacturer, with over 125 years of expertise in helping property owners and managers make their best and safest roofing choices. GAF products can deliver on any customized solutions.
J. Great Roofing & Siding stands behind GAF roofing products, you can count on consistency and the highest quality the industry has to offer.
Your Local Trust Roofing Company
Serving Suffolk & Nassau
1225+
Projects Complete
1345269
Sqft. Shingles installed
32
Active Experts
365
Days a Year
Best Values
J. Great Roofing & Siding is a Certified roofer with GAF.
GAF is North America’s largest* roofing manufacturer, with over 125 years of expertise in helping property owners and managers make their best and safest roofing choices. GAF products can deliver on any customized solutions.
J. Great Roofing & Siding stands behind GAF roofing products, you can count on consistency and the highest quality the industry has to offer.
testimonials
What Our Clients Say
Megan Reuss
Facebook Review“Such a great experience with J. Great Roofing! A friend recommended them and they did not disappoint. Great job. Great price. They cleaned up and were respectful of outdoor furniture, etc. And they even finished the job early! Highly recommend!”
Howie Frey
Google Review“J. Great replaced the back half of my roof 2 years ago. Today they returned and replaced a large flat roof section over my Garage and an added on room. As always Jose and his team did an excellent job at an affordable price.”
Pretzelnek
Google Review“My roof looks FANTASTIC! My gutters reattached to perfection! My entire house looks great!
Thank you “J.Great Roofing” (Jose and crew) for a job well done! ”
Adrienne Marzano
Google Review“Jose and his crew just installed a new roof and gutters on my home. They were a pleasure to deal with and went out of their way to make sure everything was completed correctly and in one day. Their pricing is fair and the quality of the material and workmanship is excellent.”