Rotted Sill, Caught in Time
Decay cut out completely and rebuilt in real wood — no filler, no new window.
Serving North Carolina 
Restored 
Rotted Sash in less than a minute
Call (888) 887-6833
Rotten Wood Repair
Our method is surgical: decay cut out to solid, healthy wood, an exact-profile piece milled from laminated lumber, spliced in and sealed — from $375. Filler over rot is the one thing we will never sell you.
Restored Rotted Sash Real WowFix job — drag to see the difference.
★★★★★ 4.9 · Rated by 473+ homeowners*
Restored Rotted Sash Real WowFix job — drag to see the difference.
What Actually Failed
How Rot Starts, and Why It Stays at the Bottom
Rot is a fungus, and it needs one thing to live in wood: water that stays. Wood that dries out after every rain lasts for generations. Wood that stays wet starts going soft. So to understand rot, follow the water. These are the parts of a wood window it reaches:
Rain runs down, so rot starts low. Water runs off the glass and down the frame and ends up on the flat parts: the bottom rail of the sash and the sill. While the paint is whole, it runs off. When the paint cracks, the water goes into the wood and stays there. The top of the window stays dry and solid while the bottom goes soft. Watch one window age:
Paint and caulk are the only defense. Wood has no protection of its own. Every crack in the paint and every gap in a caulk line lets water in. Fresh paint over wet wood doesn't help either: it traps the water, and the rot keeps going underneath.
Clad windows hide it. On an aluminum-clad window the outside looks like metal, but there's wood underneath. The aluminum is sealed to the glass with silicone, and when that silicone lets go, water gets behind the aluminum and fills the pocket like a bathtub. The aluminum keeps it from drying out. From outside, the window looks perfect.
Why aluminum-clad wood windows rot where you can't see it Three cross-sections of the bottom of an aluminum-clad wood sash. The aluminum clad covers the outside of the wood and is sealed to the glass with silicone. One: the silicone lets go and rain runs in between the glass and the aluminum. Two: the water collects in the pocket between the aluminum and the wood and fills it up like a bathtub, the same way the desiccant fills in a sealed glass unit; the wood next to it starts to darken. Three: the tub is full, the wood sits in water, never dries and rots, while the aluminum outside still looks perfect.
Why filler fails. Filler covers the rot without removing it, and seals the moisture in. The decay keeps spreading behind it.
What we do. We cut the rot out down to solid, healthy wood, mill a new piece to the original profile, splice it in, seal it, and fix the spot where water was getting in. From $375 for a sash and $475 for a sill, against about $2,000 for a new wood window.
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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Window or door?
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Window or door?
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Window or door?
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Preliminary estimate — your final price is confirmed on-site at booking. No surprises.
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Surgery, Not Cosmetics
The Method
Why Don't Our Rot Repairs Come Back? Cut, Mill, Splice, Seal
Rot is a living process: fungus eating damp wood outward from a water source. Smearing filler over it entombs the disease — the handyman fix that fails within a year. Our method removes the disease entirely: probe to the healthy-wood boundary, cut the decay out with clean square edges, mill a replacement piece from laminated lumber copied to the original profile — every slope and drip edge — splice it in, then seal the water path that started it all. Under paint the repair disappears; under weather it outlasts the original.
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Probe first — the boundary decides everything
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Clean square cuts — no ragged gouging, no guesswork
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Laminated lumber — engineered to shrug off water
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The water source corrected, not just the symptom
Where Epoxy Fits
When Is Epoxy the Right Tool for Rot — and When Isn't It?
Structural epoxy consolidation earns its keep on small, early, honestly-probed spots — hardening the fibers next to solid wood where cutting would take more than it saves. That's the whole legitimate territory. Deep rot, the kind inspectors flag and sills crumble from, gets the full cut-and-splice. On-site, the probe decides which case yours is; wishful thinking doesn't get a vote, and neither does the invoice.
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Early shallow spots — epoxy consolidation, honestly judged
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Established rot — cut out and rebuilt, no shortcuts
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Windows from $375 · door frames from $475 · door sash $575
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Versus ~$2,000 for one new wood window
The Probe Decides
Diagnosed · Quoted · Warrantied
The Process
How Rotten Wood Repair Works
The same four moves on every rot job, every era of house.
01/Probe to Solid, Healthy Wood
The decay mapped to its true edges — you see exactly what's spent and what survives.
02/Written Price by Piece
Each section its own line: sills, sashes, jambs, thresholds — before a saw moves.
03/Cut, Mill, Splice
Decay out with clean edges; laminated replacements milled to profile and spliced in.
04/Seal & Warranty
Primed, painted, water path corrected — written 5-year warranty on the rebuild.
Transparent Pricing
How Much Does Rotten Wood Repair Cost?
Priced by the piece, mapped by the probe:
- Window sills & sashes — rebuilt from $375 (sills from $475)
- Door frames & jambs — from $475 · door sash — from $575
- Early-spot epoxy consolidation — priced per assessment
- For scale — a new wood window runs ~$2,000
- Window repair cost — rotted wood beside hardware and glass on one price list
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
Clear 
Foggy 
Clear View 
Glass Out 
New Glass 
Broken Pane Drag the handle to compare — swipe or tap a dot for more jobs.
Local Coverage
Serving NC & Surrounding Areas
Rot crews and the milling bench serve every metro we cover — pick your city below for the local page.
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.
Rotten Wood Repair — FAQ
The screwdriver test: press gently. Solid, healthy wood pushes back; rot gives like cork. Bubbling or flaking paint, dark stains after rain and a dull knock are the early postcards. If it gives — call while the soft spot is measured in inches, not feet.
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