Rotted Sill, Caught in Time
Decay cut out completely and rebuilt in real wood — no filler, no new window.
Serving North Carolina 
Clear 
Foggy in less than a minute
Call (888) 887-6833
Sliding Glass Door Repair
A sliding glass door that drags, jumps the track or won't lock is riding on two worn rollers the size of a coin — not a dead door. Rollers rebuilt from $475, track and lock tuned, glass swapped from $198 — most doors gliding one-handed in a single visit.
Clear Foggy Real WowFix job — drag to see the difference.
★★★★★ 4.9 · Rated by 473+ homeowners*
Clear Foggy Real WowFix job — drag to see the difference.
What Actually Failed
Which Part of a Sliding Door Actually Breaks
A sliding glass door has very few moving parts, and they don't wear out equally. The glass and the frame rarely do. What wears out is what moves: two rollers in the bottom of the panel, the track they run on, and the lock.
Rollers wear out first. The whole panel, glass and all, rides on two small wheels. They sit at the very bottom of the door, right in the track, where rain, dirt, pollen and sand collect. The bearings rust, the balls fall out, and the wheel stops turning. Sometimes the pin that holds the wheel breaks, and the door drops onto the track. Either way, a door that used to glide now grinds and drags.
How a sliding door roller fails Three side views of a roller on its track. One: water and grit collect in the track and get into the roller, while the door still rolls. Two: the bearing rusts, its balls fall out and the wheel grinds instead of spinning. Three: the axle pin breaks, the wheel drops out of place and the bottom of the door sits on the track and drags.
The track goes next, if the rollers are left too long. A door dragged on dead rollers wears down the metal rail on the sill. It gets dents and flat spots, and then even new rollers bump over them. Caught in time, new rollers alone fix it.
The lock stops lining up when the door sags. As the rollers wear, the door sits lower, and the latch no longer meets the catch on the frame. Often the door just needs to be raised back to the right height.
What we fix, and what it costs. Rollers from $475 ($535 with new wheels), a track $475, a lock $175. Foggy door glass can be swapped on the same visit. The panel and the frame stay.
Instant Estimate
Get Your Price in Seconds
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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Window or door?
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Window or door?
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Window or door?
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Estimated price
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Preliminary estimate — your final price is confirmed on-site at booking. No surprises.
Not sure what it is?
Rollers, Not Doors
What Actually Fails
Which Part of a Sliding Glass Door Fails — the Door, or the Two Wheels Under It?
A patio slider is a 150-lb panel riding on two steel or nylon rollers the size of a quarter. Grit in the track, pollen, pool-deck damp and a decade of deck traffic grind them flat — and the whole door feels finished. It isn't. The tempered glass, the frame and the panel stay yours; the glide gets rebuilt. Locks, latches, weatherstripping and fogged glass ride along on the same visit.
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Heavy-duty rollers fitted and adjusted — from $475 ($535 with new wheels)
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Track cleaned, straightened or replaced — $475
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Sliding door lock $175 · latch $115 · weatherstripping $175
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Foggy or broken slider glass — tempered units from $198
The Replacement Pitch
They Quoted a New Slider at $2,500–$4,500 — Did You Just Need Two Wheels?
Door companies sell doors, so a dragging slider becomes a replacement conversation. The honest math: new rollers and a tuned track from $475, one visit, and the door your house came with glides like the day it was hung. Discontinued brand? Rollers are matched by wheel diameter, housing and load — not by the sticker on the frame. If a panel is truly finished, we'll say so in writing before anyone spends real money.
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Roller rebuild from $475 — against $2,500+ for a new door
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Any brand, including discontinued panels
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Written quote before work starts — no surprises
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Re-checked under load and locked before we leave
One Visit, It Glides
Diagnosed · Quoted · Warrantied
The Process
How Sliding Glass Door Repair Works
Door off, glide rebuilt, door on — checked under load.
01/Call or Send a Video
Describe the drag or send a clip — we arrive knowing the roller type to bring.
02/Door Off, Wheels Out
The panel lifts out; flat rollers and track damage show themselves immediately.
03/Rollers & Track Rebuilt
Heavy-duty rollers seated, track cleaned and straightened, lock and latch adjusted.
04/Rehung & Load-Tested
The door goes back on, glides one-handed, locks without lifting — 5-year warranty.
Transparent Pricing
How Much Does Sliding Glass Door Repair Cost?
Written numbers, not a door-sale conversation:
- Roller replacement & track tune — from $475 ($535 with wheels)
- Track repair or replacement — $475
- Sliding door lock — $175 · latch — $115 · weatherstripping — $175
- Foggy or broken slider glass — tempered units from $198
- Symptom guide: door won't slide, jumps or screams · roller replacement, step by step
- A new patio door instead — $2,500–$4,500 (the quote to walk away from)
Quoted On-Site, In Writing
Why WowFix
Why NC 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 — and most sealed glass is built the same day.
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 WowFix Repairs: Before & After
New Glass 
Broken Pane 
Clear View 
Glass Out 
Restored 
Rotted Sash Drag the handle to compare — swipe or tap a dot for more jobs.
Local Coverage
Serving NC & Surrounding Areas
Roller rebuilds run wherever our door crews do — find your city below.
Where We Work
Book your service today
Reviews
What NC 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 — this is one of our actual jobs. Watch a rotted, fogged-out window brought back to flawless, like-new glass.
Sliding Glass Door Repair — FAQ
No. Inspectors flag the symptom; the cause is worn rollers. From $475 and one visit the write-up clears without touching your closing date — and it costs less than the credit the buyer would ask for.
Before We Arrive
How to Prepare for Your WowFix Window Repair Visit
- 1
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, Made Safe & Reglazed
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: October 13, 2026