Roofing
Certified roof replacement, new roof installation, and expert roof repair from a GAF Master Elite contractor with 40+ years of hands-on roofing experience.
Your roof carries more responsibility than any other part of your house. It manages water, defends against wind and ice, supports your attic's temperature control, and quietly influences the value of everything underneath it. That is why roofing is not a project to hand off to whoever answers the phone first. Since 1985, Thermo-Seal has built its reputation on doing roofing the demanding way: thorough inspections, premium materials, and certified installation crews who treat every roof replacement as if the home were their own. Whether you are dealing with an active leak, lifting shingles, granule loss in the gutters, or a roof that has simply reached the end of its service life, our roofing professionals can tell you exactly where you stand and what your realistic options are. No pressure, no vague answers, and no cutting corners where they cannot be seen.
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Roofing Services That Cover Every Stage of Your Roof's Life
Not every roofing problem calls for a full roof replacement, and not every roof can be saved with a patch. Our roofing services are structured so homeowners get the right solution rather than the biggest invoice.
- Roof Replacement: A complete tear-off and rebuild of your roofing system using premium materials and certified installation methods, engineered for decades of protection.
- New Roof Installation: Full roofing installation for additions, new construction, and homes converting to a different roofing material or roof type.
- Roof Repair: Targeted repairs for leaks, damaged flashing, missing or cracked shingles, and vulnerable areas that can shorten the life of an otherwise healthy roof.
- Emergency Roof Repair: Fast response from our in-house roofing team when storm damage, sudden leaks, or urgent failures put your home at immediate risk.
- Roof Inspections: Honest, detailed evaluations that tell you what condition your roof is actually in, what needs attention now, and what can reasonably wait.
The goal is always the same. Extend the life of your roof when that makes sense, and deliver a roof replacement that outlasts expectations when it does not.
Weather Resistant
Withstands wind, hail, rain, and snow.
Eco-Friendly
Often made from recycled materials and 100% recyclable.
Roof Replacement
What Your Roof Replacement Actually Includes
Homeowners are often surprised by how much happens between "we need a new roof" and the final cleanup. A roof replacement done correctly is a system, not a shingle delivery. Here is how a Thermo-Seal roofing project comes together.
It begins with a detailed inspection of your existing roof, attic ventilation, flashing, and decking so nothing gets buried under new materials. From there, we walk you through material options, roof types, and what each choice means for durability, appearance, and long-term performance. You will know what is going on your home and why before any work begins.
During installation, our certified roofing crews handle the full tear-off, inspect and address compromised decking, install underlayment and ice and water protection at vulnerable areas, rebuild flashing at chimneys, valleys, and penetrations, address ventilation where needed, and install your new roofing system to manufacturer specification. The project closes with a thorough site cleanup and a final walkthrough so you can see the finished work for yourself.
Because we are GAF Master Elite Certified, we also have access to enhanced manufacturer warranty options that most roofing contractors are not eligible to offer. Available coverage varies by project and material, and we will explain exactly what applies to your roof during your estimate.
Roof Types We Install for Every Style of Home
The right roofing material depends on your home's architecture, slope, budget, and how long you plan to stay. Our roofing experts install a wide range of roof types so you are never pushed toward the one product a company happens to stock.
- Architectural Shingles:
The most popular choice in modern roof replacement, offering dimensional depth, strong wind performance, and excellent long-term value.
- Luxury Shingles: Heavyweight roofing shingles designed to replicate the look of slate or cedar shake with the durability of modern asphalt technology.
- Cedar Shingles: A natural, timeless roofing option that delivers distinctive character and curb appeal on the right architectural style.
- Copper Roofing: A premium, exceptionally long-lasting roofing material that develops a signature patina and stands out on accents, bays, porches, and full installations.
- Tile Roofing: Durable, striking roofing built for homes where longevity and architectural presence matter.
- Flat Roofing: Specialized low-slope roofing systems for additions, porches, dormers, and full flat roof structures where standard shingles are not an option.
If you are unsure which roof type fits your home, our roofing team will show you real comparisons rather than a sales sheet.
The Roofing Brands Behind Every Roof We Install
A roof is only as reliable as the materials it is built from and the crew installing them. Thermo-Seal partners with manufacturers that have earned their reputation over decades, including GAF, CertainTeed, Owens Corning, IKO, TAMKO, and Carlisle SynTec for commercial-grade low-slope and flat roofing systems.
Our GAF Master Elite Certification is a distinction held by only about two percent of roofing contractors in North America. It requires ongoing training, proven installation standards, and a documented commitment to craftsmanship. For homeowners, that certification is a straightforward signal: your roof replacement is being installed by a company the manufacturer itself vouches for.
Warning Signs Your Roof May Need Replacement
Most roofing failures announce themselves long before water reaches a ceiling. Catching these signs early often means the difference between a repair and a full roof replacement.
- Curling, cracking, buckling, or missing shingles
- Granules collecting in gutters or at downspout outlets
- Dark streaks, staining, or visible sagging in the roofline
- Water stains on ceilings or attic sheathing
- Daylight visible through attic boards
- Damaged, rusted, or separating flashing around chimneys and valleys
- Rising heating and cooling costs tied to poor attic ventilation
- A roof approaching or past the typical lifespan of its material
If any of these sound familiar, an inspection is the logical next step. It costs you nothing to know the truth about your roof.
Who Benefits Most From a New Roof
Roof replacement delivers the clearest return for homeowners in a few specific situations. If your roof is nearing the end of its expected lifespan, repeated repairs have started to feel like a subscription rather than a solution. Replacing the system outright ends the cycle and restores full protection.
Homeowners preparing to sell benefit as well, since a new roof removes one of the most common negotiation points during inspection and meaningfully improves first impressions from the curb. Families dealing with recurring leaks, ice dam damage, or uncomfortable upstairs rooms often discover that the roofing system and attic ventilation are the actual source of the problem.
And for anyone who has recently been through a serious storm, a professional roofing inspection is worth doing even when nothing looks obviously wrong. Wind and hail damage frequently hides in plain sight until the next heavy rain finds it.
Why Homeowners Choose Thermo-Seal for Roofing
Plenty of companies can put shingles on a house. Far fewer can explain why they made every decision underneath them.
- Certified roofing experts. GAF Master Elite Certification places our roofing team among a small fraction of contractors nationwide.
- In-house crews, never subcontractors. Every roof replacement is completed by our own highly trained, full-time professionals, so accountability never gets handed off.
- Over four decades of experience. Operating since 1985, we have seen how roofing systems actually perform over time, not just how they look on installation day.
- Recognized reputation. An A+ BBB rating and an Angi Super Service Award reflect the standard homeowners have come to expect from us.
- Licensed and insured. Your home and your investment are protected throughout the project.
- Full exterior expertise. Because we also install windows, siding, doors, and gutters, we understand how your roof interacts with the rest of your home's exterior envelope.
Roof Replacement How-To Guides
How Much Does a New Roof Cost?
Roof replacement cost depends on several variables, and any company quoting a firm number before seeing your home is guessing. The largest factors are the size and complexity of your roof, the roofing material you choose, the pitch and number of stories, the condition of the decking underneath, and whether existing layers need to be removed. A simple gable roof with architectural shingles sits at a very different investment level than a steep, multi-valley roof finished in copper or tile.
Access, ventilation upgrades, flashing rebuilds, and skylights or chimneys also influence the final scope. This is why Thermo-Seal provides a free in-home estimate. We inspect the roof, measure accurately, identify anything hidden that could affect the work, and present clear options at different material tiers so you can make an informed decision rather than a rushed one.
Does a New Roof Increase Home Value?
A new roof consistently ranks among the exterior improvements buyers respond to most, and for practical reasons. A roof replacement removes uncertainty. Buyers know that roofing is one of the most significant expenses a home can present, so a recently installed roof eliminates a major unknown and strengthens your position during inspection and negotiation.
Beyond resale, a new roofing system improves curb appeal immediately, since architectural and luxury shingles add dimension and color that dated roofs cannot match. It can also contribute to better attic ventilation and temperature regulation, which supports overall home comfort. Actual value impact varies by market, home, and materials selected, but the reduction in risk and the improvement in appearance are consistent benefits homeowners notice right away.
Protection That Continues Long After the Last Shingle Is Installed
The value of a professionally installed roof shows up quietly over the following years. Water stays outside. Attic ventilation works the way it was designed to, which supports more consistent indoor temperatures and reduces moisture buildup. The maintenance calls stop. The buckets in the hallway disappear.
You also keep documentation of a certified installation, which matters when you sell, when you file an insurance claim, or when you simply want confidence that the work was done to manufacturer standard. Our relationship does not end at cleanup either. If a question or concern comes up down the road, you are calling the same company that installed your roof, not a subcontractor who has moved on.
Schedule Your Free Roofing Estimate
Whether you need an honest opinion on a roof repair or you are ready to move forward with a full roof replacement, the first step is the same. Reach out to Thermo-Seal and our roofing experts will inspect your home, explain what we find in plain language, and lay out your options clearly.
Speak to a roofing expert and schedule your free in-home estimate today.
Serving NY, NJ, & CT
Frequently Asked Questions About Roofing
How long does a roof replacement take?
Most residential roof replacement projects are completed within a short window, often a single day to a few days, depending on the size and complexity of the roof. Steeper pitches, multiple valleys, dormers, skylights, chimneys, and premium roofing materials like tile or copper roofing require additional time and care. Weather also plays a role, since a roofing system should never be opened up when conditions put the interior of the home at risk. During your estimate, our roofing team will give you a realistic timeline based on your specific home rather than a generic average, and we will keep you informed if anything changes once the roof is opened and the decking is visible.
Can my roof be repaired instead of replaced?
In many cases, yes. Roof repair is often the right answer when the roofing system is still within its expected lifespan and the damage is isolated, such as a section of missing shingles, failed flashing around a chimney, or a leak at a single penetration point. Repairs can extend the life of a roof considerably when the underlying materials are still sound. Roof replacement becomes the better investment when the roof is aging broadly, when granule loss and shingle deterioration are widespread, or when repeated repairs are no longer holding. Our inspections are designed to give you an honest read on which situation you are actually in, because recommending unnecessary work is not how we have kept homeowners coming back since 1985.
What roofing materials do you install?
Thermo-Seal installs a full range of roof types, including architectural shingles, luxury shingles, cedar shingles, tile roofing, copper roofing, and specialized flat roof systems for low-slope areas. We work with respected manufacturers including GAF, CertainTeed, Owens Corning, IKO, TAMKO, and Carlisle SynTec, which allows us to match the roofing material to your home's architecture, slope, and long-term goals instead of steering every customer toward the same product. During your estimate, we will walk through how each option performs, how it looks on a home like yours, and what to expect from it over time.
What does GAF Master Elite Certification mean for my roofing project?
GAF Master Elite is a certification awarded to a small percentage of roofing contractors in North America, roughly two percent, and it is not something a company can simply purchase. It requires proven installation standards, ongoing training, proper licensing and insurance, and a demonstrated track record with homeowners. For your roof replacement, it means the crew installing your roofing system has been vetted by the manufacturer itself and installs to specification. It also makes us eligible to offer enhanced manufacturer warranty options that non-certified roofing contractors cannot provide, with specific coverage depending on the materials and scope of your project.
How do I know if storm damage affected my roof?
Storm damage is frequently invisible from the ground. Wind can lift and crease shingles without removing them, hail can bruise the shingle surface and accelerate granule loss, and flashing can separate just enough to allow water in during the next heavy rain. Homeowners often do not discover the problem until a ceiling stain appears months later. If your area has experienced high winds, hail, or heavy ice, a professional roof inspection is the safest course of action. Our roofing team will examine the shingles, flashing, valleys, vents, and attic for evidence of damage and give you a clear, documented assessment of what we find, whether that leads to a repair, a roof replacement, or simply peace of mind.
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Contact Info.
Phone Number:
Email Address:
Showroom:
456 Sunrise Highway, Rockville Center NY 11570 - (516) 689-7214
Rye Corporate Office:
411 Theodore Fremd Avenue, Rye NY 10580 - (914) 635-3748
Stamford Office:
263 Tresser Blvd., Stamford, CT 06901 - (203) 990-1812
Melville Office:
68 South Service Road., Melville NY 11747 - (631) 710-6937
CLIENT REVIEWS
What Our Clients Are Saying About Us
Thermo-seal Windows provides exceptional customer service alongside high-quality products. Recently, I had the majority of my home's windows replaced by Aaron's team, and their performance was nothing short of impressive. They arrived on time, maintained a tidy work area, and dedicated themselves to ensuring a perfect installation of the windows.
Aaron and his team were amazing, from start to finish! They worked with us every step of the way and Aaron was always just a call or text away to answer any questions we had. The windows are perfect and we love them. We highly recommend working with Aaron and his team. They are professional, courteous and their work is top notch!
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We Replace Roofs in New York, New Jersey and Connecticut
Thermo-Seal proudly provides Roofing Replacement throughout New York, New Jersey and Connecticut. From Nassau County, Suffolk County, Rockland, and Westchester to Bergen and Fairfield County and the greater areas of Connecticut.
Our experts are available in dozens of local communities, providing the highest level of service in the industry as we've been around for over four decades with a reputation you can trust.

Some of the Areas We Serve For Roof Replacement
New York
- Ardsley
- Armonk
- Bedford
- Briarcliff Manor
- Bronxville
- Chappaqua
- Croton-on-Hudson
- Dobbs Ferry, NY
- Eastchester
- Greenville
- Harrison
- Hastings-on-Hudson
- Irvington
- Katonah
- Larchmont
- Mamaroneck
- Mount Kisco
- New Rochelle
- Ossining, NY
- Pelham
- Pleasantville
- Pound Ridge
- Purchase, NY
- Rye
- Rye Brook
- Scarsdale
- Somers, NY
- White Plains
- Yonkers
- Yorktown, NY
- Yorktown Heights, NY
Upstate, NY
Connecticut
New Jersey
- Farmingdale
- Cedarhurst
- Lawrence
- Garden City
- Manhasset
- Massapequa
- Oyster Bay
- Rockville Centre
- Roslyn
- Westbury
- Bellmore
- Brookville
- East Meadow
- Glen Cove
- Great Neck
- Hicksville
- Jericho
- Locust Valley
- Lynbrook
- Merrick
- New Hyde Park
- Oceanside
- Port Washington
- Sea Cliff
- Wantagh
- Woodbury
- Kings Point
- Sands Point
- Old Westbury
- Muttontown
- Old Brookville
- Bayville
- Glen Head
- Syosset
- East Norwich
- Roslyn Heights
- East Williston
- Williston Park
- Mineola
- Albertson
- Levittown
- Old Bethpage
- Seaford
- Massapequa Park
- Long Beach
- Woodmere
- Malverne
- Franklin Square
- Hewlett
- East Rockaway
- Plainview
- Island Park
- Dix Hills
- Centerport
- Hauppauge
- Huntington
- Greenlawn
- East Northport
- Fort Salonga
- St. James
- Port Jefferson
- Mount Sinai
- Miller Place
- Nesconset
- Brightwaters
- East Islip
- Bayport
- Water Mill
- Amagansett
- Hampton Bays
- Cold Spring Harbor
- Lloyd Harbor
- Melville
- Smithtown
- Syosset
- Babylon
- Commack
- Kings Park
- Mattituck
- Northport
- Sagaponack
- Sayville
- Setauket
- Southold
- Stony Brook
- West Islip
- Lindenhurst
- Copiague
- Amityville
- Deer Park
- Bohemia
- Islandia
- Ronkonkoma
- Holbrook
- Holtsville
- Lake Grove
- Nissequogue









