24/7 Emergency Available

We're also available for emergency services.

Experts & Professionals

We are versatile, regardless of your home design, so we can help make right decision.

Total Satisfaction

We offer a quality reliable service. We strive for 100% satisfaction for residential and commercial.

Professional Inspection

We know you need professional help to get your project done the right way, that's why we're here.

Why Choose JGR?
Certified Company

Our company understand that in order to meet your needs, we must first understand your goals and maintain that focus throughout the project.

  • Preconstruction Services, Cost Estimating & Bidding
  • Construction Management
  • Project & Contract Administration
  • LEED Consultation & Implementation
  • General Contracting
Why Our Team
Reasons to Choose Us

The owner of J. Great Roofing has been in this industry for over 20 years.

J. Great Roofing has am A+ rating with The Better Business Bureau, GAF & NRCA.

We offer the best pricing for the best service.

We work with Roofing Liability Insurance and Roofing Workman’s Compensation Insurance.

Licensed with Consumer Affairs with both Nassau And Suffolk County & has an A+ rating with The Better Business Bureau.

  • No Subcontractors are ever used.
  • All Jobs are completed in One Day.
  • No Dumpsters on Jobsite.
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
85%
Brand #2
65%
Brand #3
55%
our services
What We Offer for You

Our team is well versed in project estimating, management and feasibility.

Roofing

Multiple roofing technologies and solutions for both steep and low slopes.

Maintenance

A comprehensive Preventative Maintenance Program to avoid high cost on repairs in the future.

Affordable & Reliable

Economical roofing and repair solutions. Because it's worth more a happy customer than a full pocket.

Warranty

We offer lifetime warranties on all our products.

Free Inspections

Job site inspections conducted by experienced inspectors that make sure you will get a professional job and reliable products for your home.

Trustworthiness

Don't trust the integrity of your home and roofing system to amateurs and shoddy workmanship.
our mission
Building on Trust

With over 20 years of experience under our hard hat, we partner with owners and design professionals to build high-quality projects.

J. great Roofing will install your roof with an integrated system designed with multiple parts, engineered from advanced material technology. Each part of your roofing system then plays an integral part in waterproofing and protecting your home.

Online Reviews
What Our Clients Say
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