Expert Window Installation & Replacement
Window Repair in Long Island
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Reliable, Certified, and Trusted Window Repair Experts in Long Island
If your windows are drafty, damaged, or not functioning properly, Thermo-Seal provides trusted window repair services throughout Long Island. With over 40 years of experience and certifications from top window manufacturers like Andersen and Harvey, we deliver professional repairs that restore energy efficiency, comfort, and safety. Whether you’re dealing with foggy double-pane glass, broken locks, or sticking sashes, our expert team offers dependable, long-term solutions.
From the historic homes in Nassau County to the coastal properties of Suffolk, we provide expert window repair services across all of Long Island—tailored to fit the style and structure of your home.
No need to keep looking for window repair near me—Thermo-Seal is Long Island’s go-to team for high-quality repairs and trusted service across the Tri-State area.
Thermo-Seal window Repair in Long Island
Fixing the Problem, Restoring Your Peace of Mind in Long Island
Window issues can quietly lead to larger problems—higher energy bills, water damage, and poor insulation. Whether it’s a cracked pane or worn-out seals, our Long Island window repair service is designed to solve these problems at their source, not just cover them up.
Thermo-Seal uses materials that meet or exceed original specs, installed by our fully in-house crew. No subcontractors. No shortcuts. Just reliable repairs built to last.
What’s Included in Our Window Repair Service in Long Island?
Every window repair begins with a detailed, no-pressure inspection. Depending on what your Long Island home needs, the service may include:
✔ Replacing foggy or cracked insulated glass panels
✔ Repairing or adjusting faulty tracks, locks, and hardware
✔ Restoring or rebuilding broken sashes and damaged frames
✔ Eliminating air leaks for better energy efficiency
✔ Matching your existing window design for a seamless appearance
We make your options clear so you can confidently choose the best solution for your home and your budget.
Who Benefits Most from Our Window Repair Services in Long Island?
If your frames are still in good shape, window repair may be the smarter choice over a full replacement. For Long Island homeowners, this service is an affordable way to enhance comfort and efficiency without changing your home's original look.
Ideal for:
✔ Homeowners who want to preserve older window aesthetics
✔ Quick recovery from storm or accidental damage
✔ Reducing energy costs and improving insulation without major remodeling
How Long Do the Benefits of Window Repair in Long Island Last?
Our Long Island window repair services go deeper than surface-level fixes. We inspect and correct underlying problems like failed seals or warped frames to ensure your windows work like new. You’ll enjoy improved operation, less outside noise, and better indoor temperature control.
We work with premium products from Harvey, Andersen, and Pella—and all repairs are completed by our trained in-house professionals.
Why Homeowners Choose Thermo-Seal Over Other Window Repair Companies in Long Island
Thermo-Seal is a trusted name across Long Island for a reason. Homeowners know they can count on us for high-quality window repairs, transparent service, and professional results from start to finish.
✔ No subcontractors—only certified in-house experts
✔ Specializing in Andersen and Harvey window repair
✔ 40+ years of residential window experience
✔ A+ rated by the BBB and multiple Angi Super Service Awards
✔ Free, honest estimates with zero sales pressure
With Thermo-Seal, window repair gets done right—the first time.
Is It Cheaper to Repair a Window or Replace It in Long Island?
Repairing your windows can be significantly more affordable than replacing them, especially if your frames are still in good condition. Our Long Island specialists will evaluate the situation and provide honest advice—whether that means moving forward with a repair or discussing a replacement if needed. No pressure, just the right solution.
How Much Will It Cost to Repair My Windows in Long Island?
Every home on Long Island is different, so we customize every repair accordingly. Thermo-Seal offers free in-home evaluations, providing full transparency before any work begins. No hidden fees, no pushy tactics—just straightforward guidance. And with 0% interest financing available for qualified homeowners, we make it easy to get your windows repaired on budget.
Frequently Asked Questions About Window Repair in Long Island
How do I know if my windows need repair or replacement?
If your windows are difficult to open, leaking air or water, fogged between panes, or showing signs of frame damage, they may be eligible for repair. Our team will inspect them and let you know the best option based on performance, cost, and long-term value.
Can Thermo-Seal repair any brand of window?
We specialize in top-tier window brands such as Andersen, Harvey, and Pella, but we’re experienced with a wide range of window types and manufacturers. Our team can match materials and styles closely for a seamless result—even in older or custom homes.
How long does a window repair typically take?
Most repairs can be completed in a single visit. However, if specialized materials are needed, we’ll provide a clear timeline and keep you informed throughout the process. Our goal is to minimize disruption and maximize quality.
Will my repaired window be as energy-efficient as before?
Yes—if not more so. We use high-performance materials and proper sealing techniques to restore your window’s insulation and function. Many homeowners notice immediate improvements in energy efficiency and comfort after a repair.
Is there a warranty on your window repair work?
While exact warranties vary by product and repair type, Thermo-Seal stands behind every job with our commitment to quality and customer satisfaction. We’ll review your coverage during your estimate and ensure you understand all included protections.
Schedule Your Free Window Repair Estimate Today
Don’t let a damaged window compromise your home’s comfort, safety, or style. Call Thermo-Seal today or fill out our quick form to schedule your free in-home estimate. Discover why we’re the trusted choice for window repair near me in the Tri-State area.
📞 Call (866) 901-6808 or visit one of our offices in Rockville Centre, Rye, Stamford, or Melville to get started.
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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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