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.

For More Information Call Today! (631) 669-6269

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.

GAF
100%
Life Time Guaranteed
100%
All jobs done in one day
100%
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