Expert Roof Installation & Replacement
Roof Flashing
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
HOA Roofing – Durable, Code-Compliant Roofing Solutions for Community Properties
Roof flashing is one of the most essential yet often overlooked components of a durable roofing system—and it’s something Thermo-Seal does right every time. For over 40 years, homeowners across the Tri-State Area have trusted our certified team for weather-resistant, expertly installed roof flashing that protects vulnerable areas from water damage and costly repairs. Whether you're replacing a roof or dealing with leaks near your chimney, dormer, or siding joints, Thermo-Seal’s roof flashing services ensure long-term protection with materials and craftsmanship that meet the highest industry standards.
Weather Resistant
Withstands wind, hail, rain, and snow.
Eco-Friendly
Often made from recycled materials and 100% recyclable.
Recommended Roofers
What Is a Flashing on a Roof?
A roof flashing is a thin, weatherproof barrier—typically made from galvanized steel, aluminum, or copper—installed around roof edges, penetrations, and joints to direct water away from critical areas. At Thermo-Seal, we strategically install roof flashing wherever the roof meets a wall, chimney, skylight, vent pipe, or valley. Without this protective layer, water can seep beneath the roofing materials, leading to rot, mold, and structural damage.
Our flashing solutions are custom-fit and professionally sealed, helping your roof resist rain, snow, and ice—even during the harshest Tri-State winters. Every installation is handled by our in-house professionals—never subcontractors—to ensure consistency, accountability, and superior results.
How Roof Flashing Works to Protect Your Home
When installed properly, roof flashing redirects water away from the joints and seams in your roof, acting as a drainage system for areas prone to leaks. Here’s how Thermo-Seal ensures it performs flawlessly:
- We evaluate all vulnerable zones, including roof valleys, step flashings along sidewalls, and around roof protrusions.
- We use durable, corrosion-resistant metals designed to withstand the elements for decades.
- Flashing is integrated with your underlayment and shingles, not just layered over them—ensuring long-term water resistance.
- Our GAF Master Elite certification means your flashing installation is done with factory-backed standards and precision.
The result? A dry, secure home protected from hidden moisture intrusion that can lead to costly repairs and insurance claims.
Should All Roofs Have Flashing?
Yes—every roof needs flashing. Without it, even the best roofing materials will fail to keep your home dry. Roof flashing is especially critical around roof transitions and intersections, which are the first places water will exploit.
At Thermo-Seal, we emphasize proper roof flashing installation as part of every complete roofing project. If your current roof lacks adequate flashing or has old, corroded material, you're likely already vulnerable to leaks. Our team can assess your current roof condition and upgrade your flashing to meet modern building code and performance standards—without needing a full roof replacement.
Roof Flashing That Lasts—Installed by Certified Pros
Unlike many contractors, Thermo-Seal never outsources. Every flashing installation is completed by our trained, full-time team—GAF Master Elite certified, and held to the highest performance standards. We use flashing systems engineered to:
- Resist rust, corrosion, and expansion
- Integrate seamlessly with any roofing material (shingle, tile, metal, etc.)
- Blend into your roofline without compromising curb appeal
We’re not just installing
roof flashing—we’re protecting your home investment for decades to come.
Why Choose Thermo-Seal for Roof Flashing?
There’s a reason thousands of homeowners across New York and Connecticut trust Thermo-Seal with their roofs: we do the job right, from start to finish. Here's what sets our roof flashing service apart:
- Over 40 Years of Roofing Expertise: We’ve installed and repaired flashing on homes of all shapes, sizes, and ages.
- In-House Installation Team: No subcontractors. Just trained experts committed to quality and precision.
- Certified Craftsmanship: As a GAF Master Elite Contractor, our work meets the most rigorous industry benchmarks.
- Complete Roofing Integration: We don’t treat flashing as an afterthought—it's part of a complete waterproofing system.
- Transparent Estimates & Service: Free, no-obligation estimates and honest recommendations tailored to your roof’s specific needs.
Who Needs Roof Flashing?
Every homeowner needs it. But flashing becomes especially important if:
- Your roof is more than 10 years old
- You’ve experienced leaks near chimneys, dormers, or siding
- You’re replacing a roof or having siding work done
- You’re seeing signs of water damage inside your attic or ceilings
Thermo-Seal provides expert inspections and repairs to keep your home protected in every season. If you’re unsure whether your flashing is in good shape, we’ll give you a straight answer—no pressure, just trusted advice.
Long-Term Benefits of Roof Flashing
Flashing does more than stop leaks. When installed by Thermo-Seal, it provides lasting advantages that continue well beyond your roof project:
- Structural Protection: Prevents rot, mold, and foundational damage caused by hidden water entry.
- Energy Efficiency: A watertight roof helps maintain insulation and HVAC performance.
- Insurance Peace of Mind: Proper flashing can help you meet insurance requirements and avoid costly claims.
- Home Value: A professionally flashed roof adds long-term value and assurance for future buyers.
5 Common FAQs About Roof Flashing
1. How do I know if my roof flashing needs to be replaced?
If you’re seeing water stains on ceilings or walls, experiencing leaks near chimneys or skylights, or noticing rust or gaps in flashing materials, it’s likely time for an upgrade. Thermo-Seal can inspect your flashing and determine if it's still performing or putting your home at risk.
2. Can roof flashing be repaired without replacing the entire roof?
Yes, in most cases. If your shingles are still in good shape but the flashing is failing, Thermo-Seal can target and replace just the flashing components. Our expert installers know how to integrate new flashing into an existing roof without compromising its integrity.
3. What type of metal is best for roof flashing?
Thermo-Seal commonly uses aluminum, galvanized steel, or copper—each offering different benefits. Aluminum is lightweight and affordable, steel is durable and strong, while copper provides unmatched longevity and a premium appearance. The best choice depends on your roof material and aesthetic goals.
4. How long does roof flashing last?
With proper installation, roof flashing can last 20–30 years or more, especially when made from corrosion-resistant metals. However, extreme weather, poor installation, or roof settling can cause premature wear. That’s why having a certified contractor like Thermo-Seal install it matters.
5. Is roof flashing required by code?
In most regions, yes. Local building codes typically mandate flashing in specific roof areas, including chimneys, sidewalls, and valleys. As a licensed and insured contractor with deep experience in the Tri-State area, Thermo-Seal ensures your roof flashing complies with all relevant codes and performance standards.
Protect Your Roof from the Elements—Contact Thermo-Seal for Professional Roof Flashing Today
Don’t wait for leaks to damage your home. Whether you’re replacing your roof or simply upgrading outdated components, Thermo-Seal’s roof flashing solutions provide superior protection where it matters most. Our certified, in-house team is ready to assess your roof and deliver long-lasting results with honest service and unmatched professionalism.
Schedule your free, no-pressure estimate today—and discover why thousands of homeowners trust Thermo-Seal to protect what matters most.
Request A Free Estimate
Roof Flashing Top
Services We Offer:
Upgrade Your Home Now & Pay Later – Interest Free!
For a limited time, enjoy convenient financing with 0% interest for up to 25 months.
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!
CONTACT US
Send us a Message
Roof Flashing Bottom
5.0+
GOOGLE RATING
