Rotted Sill, Caught in Time
Decay cut out completely and rebuilt in real wood — no filler, no new window.
Serving Cornelius and the Lake Norman Shore 
After 
Before in less than a minute
Call (704) 397-3354
Window Replacement in Cornelius, NC
Water-side windows work a harder shift — full-day sun, wind off the lake, glare on the glass. When replacement is truly due, the new windows should be specified for that exposure, not just sized for the hole. Free estimate, repair math included.
After Before Real WowFix job — drag to see the difference.
★★★★★ 4.9 · Rated by 500+ Charlotte-area homeowners
After Before Real WowFix job — drag to see the difference.
Instant Estimate
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The same price we quote on the phone. Tell us what's going on — or just snap a photo — and see your estimate instantly.
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What is it?
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Frame material
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Grids?
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Window or door?
What do you need?
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Window or door?
What do you need?
Quantity
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Window or door?
What do you need?
Quantity
1
Estimated price
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Preliminary estimate — your final price is confirmed on-site at booking. No surprises.
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Spec for the Sun You Have
Exposure Matters
Windows Facing the Water Age on an Accelerated Schedule
A west-facing window over Lake Norman takes the full afternoon sun plus the glare bouncing off the water — a double dose that cooks seals, fades interiors and turns summer rooms into greenhouses. When those windows come due, replacing them with the same builder-spec glass restarts the same clock. The right move is specifying for the exposure: Low-E coatings that reject the heat load, quality seals rated for the cycling, frames that won't chalk out in a decade. That's the difference between buying windows and buying the last windows.
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Low-E glass tuned against afternoon lake glare and heat
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Seal and frame quality chosen for sun-heavy exposures
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Interior fading slowed — the view stops costing the furniture
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Shaded-side windows honestly assessed; they may not be due
View-Grade Planning
Big View Windows Deserve More Than a Catalog Order
Cornelius buys windows for the view, and view windows punish sloppy work: a picture unit out of square shows it in every sightline, a cheap glass package hazes the sunset you paid for. Our replacements get measured to the opening, set plumb and square, flashed and sealed against wind-driven lake weather, and finished clean. And before any of it, the repair check: a fogged unit in a healthy frame is a $198 glass swap, not a replacement project — you'll hear that first, with the numbers side by side.
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Free written estimate — full scope, no install-day inflation
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Repair alternative always priced first: glass swaps from $198
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Picture, casement and double-hung units set true to the view
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Old windows hauled away, openings left clean
The View Is the Spec
Audited · Specified · Set True
The Process
How Window Replacement Works in Cornelius
Honest math first, exposure-matched windows second, careful hands throughout.
01/Exposure & Repair Audit
Every opening assessed for condition and sun load — repairable windows flagged with repair prices before replacement talk.
02/Specification & Estimate
Glass packages matched to each face of the house, the full scope in one written free estimate that holds.
03/Set True & Sealed
Openings prepped, units set plumb and square, flashed and sealed for wind-driven weather off the water.
04/View Check & Warranty
Every unit cycled and sighted through with you — backed by a written workmanship warranty.
Transparent Pricing
How Much Does Window Replacement Cost in Cornelius?
Replacement is estimated free at your home — the honest number depends on your openings and exposure:
- Free on-site estimate — written, full scope, no teaser math
- Repair alternative shown first — fogged units swap from $198
- For context — quality replacement windows run $1,000+ per opening
- 5-year workmanship warranty on installation
Estimated Free, In Writing
Why WowFix
Why Lake Norman Homeowners Choose WowFix
Backed by a Warranty
Every repair comes with a written workmanship warranty. If it's not right, we come back and make it right.
Repair, Not Replace
We fix the part that failed — glass, seal, sash or hardware — so you keep your windows and skip full-replacement cost.
Local, In-House Crews
Your repair is done by our own technicians, never subcontracted — most jobs booked within days.
Upfront, Honest Pricing
A clear quote before any work starts. No hidden fees, no upsells, no pressure to replace what we can repair.
See the Difference
Real Repairs: Before & After
Clear 
Foggy 
New Glass 
Broken Pane 
Restored 
Rotted Drag the handle to compare — swipe or tap a dot for more jobs.
Local Coverage
Serving Cornelius & the Lake Norman Towns
Jetton Road to Antiquity to the Peninsula — Cornelius' mix of waterfront estates and in-town streets keeps our Lake Norman route busy year-round.
Around Cornelius
- The Peninsula
- Jetton Road
- Antiquity
- Davidson
- Huntersville
Nearby & Related
Book your service today
Reviews
What Cornelius Customers Say
Carole W.
Verified Google Review
Eugene fabricated both screens and new half double-pane windows for my home. He was professional, dedicated, and experienced. He went above and beyond to ensure the job was done right and in a timely manner. I would highly recommend WowFix for work that meets all expectations!
5
Laura P.
Verified Google Review
This is a great company. We appreciate the hard work and honesty of Eugene, who made sure our windows were fixed to our satisfaction. He completed the work on time as promised.
5
Bill D.
Verified Google Review
I had a fantastic experience with WowFix. They repaired my existing windows by cutting out rotted sashes, fashioning new ones on-site, and splicing them in. They look and work absolutely good as new!
5
Bryce K.
Verified Google Review
WowFix is a great company for repairs on doors and windows. I had two rotten double-door frames that they rebuilt. They communicate well and the pricing was fair.
5
See It For Yourself
A Real WowFix Repair — Start to Finish
No stock footage, no actors — an actual WowFix job: a rotted, fogged-out window brought back to flawless, like-new condition.
Window Replacement in Cornelius — FAQ
Depends what failed. Haze between the panes in otherwise healthy frames is a $198-per-unit glass swap — and the swap can upgrade you to Low-E glass that cuts the heat, no full replacement needed. If the frames themselves have chalked, warped or rotted from the exposure, replacement is honest — and the free estimate shows both columns so the math is yours.
Before We Arrive
How to Prepare for Your WowFix Window Repair Visit
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Photograph each problem window in daylight
Snap a clear photo of every foggy, cracked or stuck window in natural light. Morning light shows fog between the panes best and lets us quote faster — often before we arrive.
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Note what each window is doing wrong
Jot down the symptom per window — fog between the glass, won't open or stay up, draft, cracked pane, or rotted frame. It tells us whether it's a glass-only swap (from $198) or hardware/wood work.
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Clear about three feet in front of each window
Move furniture, blinds and décor back roughly three feet so our crew can measure and work safely. It keeps the visit quick and your things out of the way.
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Find any window brand or paperwork
If you have the original window brand, a sticker in the frame, or install paperwork, set it aside. It's not required, but it helps us match glass and parts on the first trip.
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Make sure we can reach the windows outside
Unlock gates, secure pets, and clear the exterior path to the windows. Most glass-unit work is done from both sides, so outside access keeps everything one visit.
Proof
Real WowFix Repairs, Up Close
The Rot Comes Out, Not the Window
We fabricate an exact-profile piece from laminated lumber and splice it in.
Shattered Pane, Same-Day Secure
New glass built to the window's exact size — frame and trim untouched.
Broken Glass on a Brick Ranch
The pane is the part that failed — so the pane is the part we replace.
Fog That Won't Wipe Off
A failed seal, not a failed window: the sealed unit is swapped, the frame stays.
Patio Door Saved from the Landfill
Rotted bottom rebuilt on-site — a fraction of the ~$10,000 a new door runs.
Real jobs, real photos — swipe for more.
Eugene Ko
Lead Window & Door Repair Specialist
This content is written by Eugene Ko, a master craftsman with 17+ years of hands-on experience in residential and commercial window repair. Eugene has personally completed over 15,000 window and door repairs across North Carolina, so every answer here is grounded in real field experience — not guesswork.
Last updated: July 2, 2026