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Serving North Carolina

Window Balance Repair

A window that slams shut didn't fail — a small plastic part inside the frame did: the pivot shoe that holds the sash to its balance. Balances and shoes replaced from $175 a window, any brand, one visit.

The same window after a balance repair, the lower sash holding halfway open on its own Holds on its own
White vinyl double-hung window with the lower sash propped open by a book because it will not stay up Propped with a book

Illustration: the same window before and after a balance repair. Drag to compare.

★★★★★ 4.9 · Rated by 473+ homeowners*
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What Actually Failed

Why Your Window Won't Stay Up: What Actually Breaks

A double-hung window doesn't hold itself up. On each side of the sash, hidden in the side channel, a balance carries its weight. At the bottom of the balance sits a pivot shoe: a small plastic block that rides in the channel and holds the sash's pivot pin, a cast-metal pin on the corner of the sash.

Why a window won't stay up: the sash balances wear out A double-hung window, with a close-up of the bottom corner of the lower sash. Balances in the side channels carry the sash's weight through a plastic pivot shoe that holds the sash's cast-metal pivot pin. After years of trips up and down the plastic shoe dries out and cracks where the balance hooks on, the hook breaks off, the balance flies up and the sash drops and slams. New pivot shoes and balances go in for $175 and the sash stays where it is left again. balance pivot shoe plastic pivot pin cast metal the bottom corner of the sash, up close New shoes · $175 It stays where you leave it The balance holds the sash through a plastic pivot shoe. Thousands of trips Up and down, day after day, year after year. The plastic dries out The pivot shoe turns brittle. Cracks start where the balance hooks on. The shoe breaks The hook snaps off, the balance lets go, the sash drops. We replace the pivot shoes New shoes and balances, $175. It stays where you leave it again. stays trips dries out breaks new shoes
Almost every time, it's a small plastic part that broke, not the window.

Almost every time, it's the pivot shoe. The shoe is plastic. Over the years the plastic dries out and turns brittle, and the part the balance hooks into breaks off. The balance lets go, nothing holds the sash anymore, and it drops the moment you let go of it.

The other common break is the pivot pin. When a sash runs tight and someone forces it up or down, the cast-metal pin snaps. Same symptom, same visit.

What it isn't: the glass, the frame, or the "age of the window". It's a small part. We replace the balances and their pivot shoes (and a snapped pin if there is one), from $175 a window, and the sash stays wherever you leave it again. More on the part itself: sash balancer replacement.

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HOT NEWS
Real estate market update · 30yr rate 7.4% · Oct 19
WWAYTV3

Real Estate Market Trends in Charlotte, NC: Prices Fall - Realtor.com

With prices falling in the Charlotte market, sellers have less room to negotiate and need their homes to be in top shape. A home inspector will often flag foggy sealed glass units, which we can replace starting from $198, or sash balancers for $175 to avoid expensive repair credits. Fixing a rotted sill from $475 or sliding door rollers from $475 now prevents buyers from demanding a new patio door, which costs about $10,000. We provide a 5-year written warranty on our work and book visits based on our crew's schedule.

Window Repair in Charlotte →
Carolina Journal

Charlotte ZIP code ranks as North Carolina’s strongest buyer’s housing market - WWAYTV3

With some Charlotte ZIP codes now ranking as the strongest buyer's markets in the state, you have more leverage when inspecting a potential new home. During your walkthrough, look for specific issues like sash balancers for windows that won't stay up at $175 or sliding door rollers starting from $475, rather than assuming you need a new patio door at about $10,000. Most problems are just failed parts, such as a window latch or lock for $115, which is far more affordable than a new vinyl window at $1,000+. We can help you price these repairs honestly in your offer, providing a 5-year written warranty on our work.

Stacker

NC’s population is booming. Our housing market is not. - Carolina Journal

With North Carolina's population growing faster than the housing supply, Charlotte buyers and sellers are facing a tight market. Home inspectors often flag soft or rotted wood on window sills or sashes, which sellers frequently underestimate as a minor cosmetic issue. We can rebuild a rotted sash from $375 or a sill or frame from $475, which is a fraction of the cost of a new vinyl window at $1,000+ or a new wood window at about $2,000.

Rotten Wood Repair in Charlotte →

Questions homeowners ask us about windows and doors →

Illustration: a cracked, yellowed plastic pivot shoe next to a new white one in a gloved hand
A Part, Not a Window
The Part That Gave Out

Slams Shut or Won't Stay Open? Is That Really a $175 Part?

Inside every double-hung frame, a balance carries the weight of the sash through a small plastic pivot shoe. After ten or twenty years the plastic dries out, the shoe breaks where the balance hooks on, and the window guillotines shut the moment you let go. The glass is fine. The frame is fine. The part that failed is a catalog item — and it swaps out from $175.

  • Balance and pivot shoe replacement — from $175 per window

  • Both sides replaced so the sash rides level

  • Whole-house visits: every tired window in one trip

  • Until we arrive: keep failed windows latched shut

Discontinued ≠ Unrepairable

Do Window Balance Parts Really "Not Exist" Anymore?

Balances are matched by sash weight and length — not by brand logo. Discontinued manufacturer? We measure, match and fit the right balance anyway. The replacement pitch prices your "obsolete" windows at $1,000+ each; the honest fix is $175 and an hour.

  • Matched by size and weight rating, brand irrelevant

  • Discontinued brands repaired weekly — Andersen, Pella, Simonton and more

  • Tilt-in sashes serviced from inside — no ladders on your lawn

  • Written per-window pricing before work starts

Illustration: a new channel balance going into the side jamb of a double-hung window, sash out
Matched, Not Marketed
Sash balance ready to go in during a window balance repair
Diagnosed · Quoted · Warrantied
The Process

How Window Balance Repair Works

Sash out, balances swapped, sash back — holds anywhere you leave it.

01/Count the Droppers

Tell us how many windows slam or slide — we bring balances for the whole list.

02/Sash Out

The sash tilts or lifts out from inside the room — furniture stays, lawn stays.

03/Balances Swapped

Both balances and their pivot shoes replaced, tensioned to the sash weight — from $175 a window.

04/Glide Check

The window stops wherever you leave it — smooth up, smooth down, 5-year warranty.

Transparent Pricing

What Does a Window That Won't Stay Up Cost to Fix?

Per window, in writing:

Double-hung windows in a North Carolina home, seen from inside
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.

Local Coverage

Serving NC & Surrounding Areas

Balance swaps run wherever our window crews do — your city is likely below.

WOWFIX Windows and Doors

North Carolina — Charlotte, Triad & Triangle metros

(888) 887-6833

Metros We Cover

  • Charlotte Metro
  • The Triad
  • The Triangle

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Testimonial
Reviews

What NC Customers Say

Carole W.
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.
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.
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.
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
Modern home with large clear windows and a clean front door at golden hour
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.

Foggy Glass — Clarity Back · 1 / 2

Windows That Won't Stay Up — FAQ

False — and that advice costs $20,000. Fifteen years is exactly when balances retire on schedule. We replace them from $175 a window in one visit, and your windows go back to holding themselves up like they did in year one.
Before We Arrive

How to Prepare for Your WowFix Window Repair Visit

  1. 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.

  2. 2

    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.

  3. 3

    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.

  4. 4

    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.

  5. 5

    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.

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.

Call (888) 887-6833

Last updated: October 12, 2026

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