Repair Services
Window Repair Services on Long Island
Not every window problem requires a full replacement. Foggy glass, broken seals, cracked panes, stuck sashes, failed balancers, worn weatherstripping, and damaged hardware can often be repaired at a fraction of the cost of new windows. Our repair technicians diagnose the issue accurately and give you an honest recommendation — repair when it makes sense, replace when it does not. We service all window types and brands across Nassau and Suffolk counties.

Why Choose Us
Professional Window Repair You Can Trust
Save vs. Full Replacement
Many window problems can be fixed for $150-$400 per window. If your frames are in good condition, repairing the glass or hardware saves 50-75% compared to a full replacement.
Same-Week Service
Most repairs are completed within the same week you call. Emergency repairs for broken glass or security issues are available next-day across Long Island.
All Brands & Types
We repair double-hung, casement, sliding, bay, bow, and picture windows from every major manufacturer. If parts are available, we can fix it.
Honest Repair-or-Replace Advice
We never push replacement when a repair will solve the problem. We give you the repair cost and the replacement cost so you can make an informed decision.
One-Year Repair Warranty
All repairs carry a one-year warranty on parts and labor. If the same issue recurs within 12 months, we come back and fix it at no additional charge.
Restore Energy Efficiency
Failed seals, broken glass, and worn weatherstripping are the top causes of energy loss through windows. Repairing these issues restores your window's original thermal performance.
Our Process
How Our Repair Service Works
Phone or Online Diagnosis
Describe the issue or send us a photo. Our technicians can often identify the problem and provide a preliminary repair estimate before visiting your home.
On-Site Inspection
We inspect the window, identify the root cause, and present you with repair and replacement options with transparent pricing. No surprises, no pressure.
Same-Day or Scheduled Repair
Many repairs are completed the same visit — hardware replacement, weatherstripping, balancer repair. Glass replacements require ordering the correct IGU and are typically completed within a week.
Testing & Warranty
We test the repaired window for proper operation, seal integrity, and locking function. You receive a one-year warranty on all parts and labor.

Professional Installation
2,840+ windows installed across Long Island since 2011
Transparent Pricing
Window Repair Cost on Long Island
Per Repair
$150 – $500
Common window repairs on Long Island: foggy glass/broken seal replacement ($175-$350), sash balance repair ($100-$200), glass pane replacement ($150-$400), weatherstripping ($75-$150 per window), and hardware replacement ($100-$250).
Exact pricing depends on window size, glass options, and installation complexity. Get a precise quote for your home.
Get Your Free QuoteFrequently Asked Questions
Window Repair FAQs
Customer Reviews
What Long Island Homeowners Say
Had 6 foggy windows in our Babylon home. WCLI replaced the glass units for a fraction of what another company quoted for full replacement. The windows look brand new and the frames were in perfect shape — no need to replace them.
Thomas C.
Babylon, NY
Called on a Monday morning about a broken window from a storm. They were at our house Tuesday afternoon, boarded it up, and had the new glass installed by Friday. Fast, professional, and reasonably priced. Will use again.
Nancy A.
Lindenhurst, NY
Several windows in our ranch were stuck shut. Turned out to be failed sash balancers — the technician replaced all of them in one visit. Windows glide smooth as new. Honest company that could have tried to sell us new windows but didn't.
Frank P.
Valley Stream, NY
Free Estimate
Get a Free Window Repair Quote
Tell us about your repair needs and we'll provide a detailed estimate within 24 hours.
Call (631) 565-8126Homes Completed
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Years Experience