Tom Jannace Roofing, Inc. is a GAF-certified residential roofing contractor serving Mt Sinai, NY and all of Suffolk County since 1990. We offer roof repair, roof replacement, new roof installation, storm damage response, skylight installation, and attic ventilation — with free, no-obligation inspections and honest estimates. Licensed, insured, A+ BBB rated, and no subcontractors. Call (631) 751-4734.
Tom Jannace Roofing, Inc. installs new roofs and handles full roof replacements for Mt Sinai homeowners—GAF certified materials, clean professional workmanship, and no subcontractors. Serving Suffolk County since 1990.
Since 1990 Serving Suffolk County
A+ BBB Rating
GAF Certified Contractor
Licensed & Insured
Complete Roofing Services in Mt Sinai, NY
Roof Repair in Mt Sinai, NY
As a trusted roof repair contractor in Mt Sinai, NY, we diagnose the actual source of a leak — not just patch the symptom. Our Mt Sinai roof repair service covers shingle replacement, flashing repair, chimney and skylight waterproofing, valley sealant work, ridge cap repair, and storm damage restoration. We show you what we find before recommending a fix.
Roof Replacement in Mt Sinai, NY
When repair is no longer the right call, our Mt Sinai roof replacement service delivers a complete, GAF-certified replacement — full tear-off, deck inspection and repair, ice and water shield at eaves and valleys, synthetic underlayment, and architectural asphalt shingles installed to manufacturer standards. Workmanship warranty, manufacturer warranty, and a clean job site when we are done.
Roof Installation in Mt Sinai, NY
Building new in Mt Sinai or adding to an existing home? We coordinate new-construction roof installation directly with your builder — code-compliant, GAF certified, properly ventilated, and installed on schedule.
Storm Damage Roof Repair in Mt Sinai, NY
Nor'easters, summer wind events, and ice storms all leave their mark on Mt Sinai roofs. We respond quickly with thorough post-storm inspection, emergency tarping when needed, and permanent repairs using materials that match your existing roof. Insurance documentation is provided on request.
Why Mt Sinai Homeowners Choose Tom Jannace Roofing for Installation
A new roof is one of the largest investments you'll make in your home. We install it right the first time—correct underlayment, proper ventilation, quality materials, and workmanship backed by decades of local experience.
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GAF Certified Installation
As a GAF certified contractor, we install roofing systems to manufacturer standards—which means better warranties, better performance, and a finished roof that holds up under real Long Island conditions.
No Subcontractors—Ever
Your installation is handled entirely by our own crew. No day laborers, no subcontracted teams. The same people you speak with are the ones on your roof, every step of the way.
Licensed & Fully Insured
Every installation is covered by full licensing and liability insurance. You're protected throughout the entire project—from tear-off to final inspection.
Local Suffolk County Contractor
We're not a national franchise. We're a local Suffolk County roofing company that has been installing roofs in Mt Sinai and surrounding North Shore communities since 1990.
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Clear Estimates—No Surprises
We provide detailed, written estimates before any work begins. The scope, materials, and price are clearly defined so you know exactly what you're getting and what it costs.
BBB A+ Rated
Our A+ BBB rating reflects over three decades of completed installations, satisfied homeowners, and a commitment to doing the job right—every time.
Roof Installation Services for Mt Sinai Homes
Whether you're replacing an aging roof or installing on new construction, we handle every phase of the job—full tear-off, proper ventilation, and a complete roofing system built to last.
Full Roof Replacement
When your existing roof is past the point of repair, a full replacement is the right call. We remove the old system completely, inspect the deck, and install a new roof built to code and certified standards.
- Complete tear-off of existing roofing
- Roof deck inspection and repair
- New underlayment and ice & water shield
- Full shingle installation with GAF materials
Asphalt Shingle Installation
Architectural asphalt shingles are the most popular choice for Long Island homes—durable, attractive, and available in styles that complement any home. We install GAF shingle systems to certified standards.
- Architectural and dimensional shingle options
- GAF Timberline and premium product lines
- Color and style selection guidance
- Manufacturer warranty eligibility
Ventilation & Underlayment Systems
A properly installed roof is more than just shingles. Correct ventilation and underlayment are critical to preventing ice dams, moisture damage, and premature shingle failure on Long Island homes.
- Ice & water shield installation at eaves and valleys
- Synthetic underlayment throughout
- Ridge vent and soffit ventilation balancing
- Attic ventilation assessment
Flashing & Drip Edge Installation
Flashing is where most roof failures begin. Every new installation includes properly detailed flashing at all penetrations, transitions, and edges—installed correctly, not cut short.
- Chimney and step flashing installation
- Valley flashing and drip edge
- Pipe boot and vent flashing
- Skylight flashing and integration
New Construction Roofing
Building new in Mt Sinai or the surrounding area? We work with builders and homeowners on new construction roofing—fully coordinated, on schedule, and installed to the same certified standards as every project we do.
- New construction scheduling and coordination
- Code-compliant installation throughout
- GAF certified materials and workmanship
- Final inspection and documentation
Pre-Installation Inspection & Estimate
Not sure if you need a repair or a full replacement? We inspect your current roof, give you an honest assessment, and provide a clear written estimate so you can make an informed decision.
- Full roof condition inspection
- Repair vs. replace recommendation
- Detailed written estimate with scope
- Material and style options presented clearly
Roof Installations Built for Mt Sinai's North Shore Climate
Mt Sinai's location on Long Island Sound means your roof takes a beating year-round—salt air corrosion, coastal nor'easters, heavy snow loads, and freeze-thaw cycles that work at every seam and edge.
We install roofing systems with the North Shore environment in mind: enhanced ice & water shield coverage, wind-rated shingle fastening, proper ventilation to control moisture, and flashing details that hold up under coastal conditions—not just for the first year, but for decades.
- Enhanced ice & water shield for freeze-thaw protection
- Wind-rated installation for nor'easter conditions
- Balanced ventilation to control coastal humidity
- Clean job sites and professional workmanship start to finish
Free Roof Inspections
Free Installation Estimates
No Subcontractors
Local Suffolk County Team
Get Your Free Roof Installation Estimate Today
Ready to replace your aging roof or start a new construction project? Get a no-obligation inspection and clear written estimate from Tom Jannace Roofing, Inc.—Suffolk County's trusted local installer since 1990.
Free inspection and honest assessment
Detailed written estimate included
GAF certified installation
Call now: (631) 751-4734