Suffolk County's Trusted Roofing Contractor Since 1990
Tom Jannace Roofing delivers residential roof installation, repair, replacement, and storm damage service across Smithtown, Mt Sinai, Hauppauge, Stony Brook, Nesconset, Kings Park, Saint James, and all of Suffolk County, NY. GAF certified. Licensed and insured. No subcontractors since 1990.
- Same-day callback
- No obligation
- 4.9★ from 58+ homeowners
- A+ BBB Rating
- Since 1990
- Licensed & Insured
- Free Inspections
Tom Jannace Roofing, Inc. is a GAF-certified residential roofing contractor headquartered in Stony Brook, NY and serving all of Suffolk County since 1990. We specialize in asphalt shingle roof installation, repair, replacement, storm damage response, skylight installation, and attic ventilation — across Smithtown, Mt Sinai, Hauppauge, Stony Brook, Nesconset, Kings Park, Saint James, Northport, Commack, Miller Place, Port Jefferson, and 14 additional Long Island communities. Licensed, insured, A+ BBB rated, no subcontractors. Call (631) 751-4734 for a free inspection.
Four signs it's time to replace your roof
Most roofs fail silently before homeowners notice. Here are the four most common drivers — each one linked to a detailed guide.
Visual Value & Curb Appeal
A worn roof pulls your whole home down. Refresh first impressions and protect resale value.
Storm Damage
Not all damage is obvious. Wind, hail, and water can compromise your roof long before leaks appear.
Energy Efficiency
An inefficient roof overworks your HVAC, driving bills up and comfort down — year after year.
Age & Deterioration
Roofs 15+ years old are often quietly breaking down. Know the signs before they become repairs.
Built on integrity. Earned over 35 years.
We've earned our reputation in Suffolk County the old-fashioned way — by showing up, doing the work right, and treating every roof like it's our own. Family-owned, fully licensed and insured, and honest about what your home needs (and what it doesn't).
- 35+ years serving Suffolk County, NY
- Fully licensed & insured — no subcontracting
- GAF Certified Contractor
- Free, detailed inspections and honest estimates
- Premium materials with workmanship warranty
- Family-owned, locally operated since 1990
- A+ BBB rating — reputation you can verify
Our premier roofing services
From new installations to 24/7 storm repair, every service comes with the same standard: honest work, premium materials, and a crew that shows up on time.
Residential Roof Installation
Long-lasting protection and curb appeal with expert installation, premium materials, and a workmanship warranty.
Learn MoreResidential Roof Repair & Inspection
Thorough inspections and fast, lasting repairs that find the root cause and extend your roof's lifespan.
Learn MoreStorm Damage Roof Repair
Severe weather can strike anytime — we restore your roof fast and help you navigate the insurance claim.
Learn MoreSkylight Installation & Repair
Leak-free, energy-smart skylight upgrades and repairs that bring in natural light without the headaches.
Learn MoreAttic Ventilation
A healthy attic means a longer-lasting roof and lower energy bills — we optimize airflow, temperature, and moisture.
Learn MoreTrusted roofing contractor across Suffolk County, NY
24+ Long Island towns and counting. Every location has a dedicated service-area page with local details, FAQs, and project photos — click your town for specifics.
- Smithtown, NY
- Hauppauge, NY
- Nesconset, NY
- Mount Sinai, NY
- Kings Park, NY
- Saint James, NY
- Northport, NY
- Commack, NY
- Miller Place, NY
- Greenlawn, NY
- Selden, NY
- Babylon, NY
- Coram, NY
- Sayville, NY
- Farmingville, NY
- Port Jefferson, NY
- Setauket-East Setauket, NY
- Stony Brook, NY
- Port Jefferson Station, NY
- Lake Grove, NY
- Head of Harbor, NY
- Centereach, NY
- Mt Sinai, NY
4.9★ from 58+ Suffolk County homeowners
Real reviews from real Long Island homeowners. The work holds up — so does the reputation.
“We had Tom Jannace Roofing install a new roof over 18 years ago. The roof had been problem free until recently when we noticed a small water leak coming from our skylights. We called Tom and he was so polite, accommodating, and he actually remembered us. He repaired the leak and gave us an incredibly fair price for the new repair. If you are looking for a roofing company with old school values and quality combined with a professional and kind attitude look no further. I would give 10 stars if I could.”
“Tom and his crew replaced our roof last fall. Showed up when he said he would, did the work quickly, and the site was spotless when they left. No pressure sales, fair price, and a real family business. Recommend without hesitation to anyone in Suffolk County looking for an honest roofer.”
“After a bad storm last winter we had leaks in two different spots. Tom came out the next day, walked the whole roof with us, showed us exactly what he found, and quoted a fair repair instead of pushing a full replacement. That honesty is rare. Five stars.”
Common questions about Tom Jannace Roofing
Everything Suffolk County homeowners typically ask before scheduling a free roof inspection.
Ready for a free roof inspection?
Same-day callbacks. No-obligation estimates. Tom or a member of the crew will walk your roof, document what they see, and give you honest options.