Window · Door · Sunroom · Deck Restoration · New Jersey

Window Repair & Restoration in New Jersey

Before you replace, see if we can fix them.

Save time and money.

Rotted frames, foggy glass, drafts, or stuck windows rarely mean you need new ones. We repair and restore them — usually in one visit, with no demolition and no moving furniture, for a fraction of the cost of replacement.

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Licensed & insured in NJ
Lead-safe (pre-1978)
5.0★ Google

Years in business

1,500+

Windows & doors restored

5.0★

Average Google rating

3 / 10 yr

Workmanship & glass warranty

Whatever it's made of

We restore the material, not just the window

Wood, glass, or aluminum — we fix what's damaged and keep what's sound.

Wood

Rotted wood

Soft, crumbling sills, frames, sashes, and thresholds rebuilt with structural epoxy that cures stronger than the original — for windows, doors, and decks.

Glass

Broken or foggy glass

Cracked panes and failed insulated units (that clouded, moisture-filled look) replaced — restoring clarity and efficiency without a new window.

Aluminum

Aluminum frames

Corroded, bent, or seized aluminum windows and doors — we restore the glass, seals, rollers, and hardware, and reseal against leaks and drafts.

Repair-first

Why repair instead of replace

A fraction of the cost

Restoration typically runs 20–30% of a new window — the same window, working like new, for far less.

Days, not weeks

Most repairs are done in a single visit — no demolition, no dust, no moving furniture out of the room.

Keep your originals

Original old-growth wood outlasts modern replacements and preserves your home's character.

What we do

Window, door & sunroom repair services in New Jersey

Four areas we restore — each with the specific work we handle.

Windows

All window services →

Doors

All door services →

Sunrooms

Sunroom Renovation Aging sunroom with foggy glass, leaks, or rotted frames? WindowServ renovates NJ sunrooms with new IGUs, frame repair,…

All sunroom services →

Decks & Fences

Wood rot repair
Post & railing restoration
Structural wood repair
Refinishing & sealing

Coming soon

Our work

Restored, not replaced — window repair projects across New Jersey

Real WindowServ projects across northern New Jersey.

Damaged window sash before wood repair in New Jersey — Damaged sash & decayed wood details

Restored window sash after WindowServ repair in New Jersey — Rebuilt, reglazed & finished

Multi-pane wood window restoration project in New Jersey

Transom window repair and restoration in New Jersey

Foggy insulated window glass repair without full replacement

Window sealing and caulking repair on a New Jersey home

View portfolio

Every brand

Window brands we repair and restore

The difference

Why homeowners choose WindowServ

Repair-first, not upsell

We price the repair first and only recommend replacement when a window truly can't be saved.

Real window craft

Reglazing, sash & balance, structural epoxy, Dutchman splice, replication — not a filler patch.

We answer & we finish

Clear communication, clean job sites, before-and-after photos. No vanishing after the estimate.

Guaranteed work

Every repair is backed by our workmanship guarantee, with an optional extended 10-year plan.

Local New Jersey team

Based in West Caldwell, serving Morris, Essex, Passaic & Union — technicians who know NJ homes.

Everyday & historic

Ordinary older-home windows or landmark historic ones — lead-safe, matched to what you have.

Reviews

What New Jersey homeowners say about WindowServ

Recent Google reviews from homeowners we serve in New Jersey.

         Posted on Google  
   
   Cari Ollo 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fast,  did a great job! Very happy! Thank you!
  
 
      Posted on Google  
   
   Maria Yiannitsarakos 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service.  We had a crack in our Pella window and did not want to replace the whole window.  They specialize in Pella Windows. They measured and order the glass  pane and within 2 weeks expertly installed it .  Also great communication
  
 
      Posted on Google  
   
   Yelena N 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very happy with the service, helped me to save a lot of money, instead of replacing the whole window they changed the foggi glass and replaced operator for my casment windows, highly recommend! Very professional.
  
 
      Posted on Google  
   
   Pushkar Bedekar 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had an amazing experience with Sergei and the crew. Our Pella window broke and Pella gave us a very expensive quote with 8 week turnaround. Sergei was able to recreate the window in a fraction of the time and cost. Work quality was impeccable and they did the job in record time.  Highly recommend for all kinds of door and window related issues.
  
 
      Posted on Google  
   
   Purvis 
 
 
 
 Trustindex verifies that the original source of the review is Google. I called multiple contractors and companies. Serge provided a quote and confirmed they could repair within a week. They were the only ones who said they could fix my broken Pella casement window from the 1990s! Everyone else including Pella recommended to change the entire three window set. They did a great job in less than half a day! Not the cheapest but I avoided changing 3 windows to fix the one broken sash and glass and didn’t have to wait for 6 weeks! Highly recommend!
  
 
      Posted on Google  
   
   caroline boutros 
 
 
 
 Trustindex verifies that the original source of the review is Google. Serg and Sasha at WindowServ were easy to communicate with, prompt and matched the glass window perfectly.  They helped to clean up all the shards of glass and made it look like nothing ever happened to my window in the first place! Would definitely recommend for your window needs!
  
 
      Posted on Google  
   
   Stephen Lloyd 
 
 
 
 Trustindex verifies that the original source of the review is Google. Did a great job. Quick and easy.
  
 
      Posted on Google  
   
   Keith Fitschen 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sergey and WindowServ NJ did a great job replacing our patio slider door Glass, as well as the mesh in our Screen slider.  He was prompt, professional and very reasonable on pricing.  We will likely be using him and his company for a future front door replacement project as well.
  
 
      Posted on Google  
   
   Feiruz Gabibov 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thanks! Great guys they gave me a consultation, and instead of replacing the entire window, I only replaced the glass. Thank you!!!
  
 
      Posted on Google  
   
   Sharon Reed 
 
 
 
 Trustindex verifies that the original source of the review is Google. Have had a great experience with WindowServ!  Replaced one broken window and two with broken seals as well as several with broken mechanisms. Very professional, reasonable prices and timely. Serge and Sasha were great to work with. Everything went so smoothly and they are really experts !
  
 
  
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Partner with WindowServ

A reliable window, door, and wood-restoration crew for the professionals who manage and sell homes across northern NJ.

Property managers & landlords — fast turnaround on repairs across a portfolio
Realtors — pre-sale window & wood fixes that add value without full replacement
General contractors — wood rot, reglazing & restoration you can white-label
Volume pricing, dependable scheduling, and one point of contact

Become a partner

Tell us about your properties or projects and we'll set up preferred pricing and a direct line for scheduling.

Start a partnership

Where we work

Serving northern New Jersey

From our West Caldwell base — across Morris, western Essex, southern Passaic, and northern Union counties.

Essex: Montclair · Livingston · West Orange · Caldwell · Verona · Cedar Grove · Fairfield

Morris: Morristown · Parsippany · Denville · Madison · Chatham · Florham Park

Passaic & Union: Wayne · Little Falls · Summit · Springfield · Berkeley Heights

See all locations

FAQ

Window repair FAQs for New Jersey homeowners

Common questions about cost, rot repair, foggy glass, timelines, and whether to repair or replace.

How much does window repair cost in New Jersey?

Most window repairs cost a fraction of full replacement — often about 20–30% of a new window — depending on the issue (foggy glass, wood rot, balances, hardware). We provide a free on-site estimate so you know the repair cost before any work begins.

Can a rotted window frame be repaired?

Yes. Soft or crumbling sills, frames, and sashes can usually be rebuilt with structural epoxy and matched woodwork, restoring strength without replacing the entire window. We only recommend replacement when the frame truly cannot be saved.

Is it better to repair or replace windows?

Repair is usually better when the window is structurally sound but has foggy glass, drafts, stuck sashes, failed balances, or localized wood rot. Replacement makes sense for severely failed units or when you want a different style or energy rating. We price the repair first and tell you honestly either way.

How long does window restoration take?

Many repairs are completed in a single visit with no demolition and no need to empty the room. Larger multi-window or historic restoration projects may take additional visits; we outline the timeline in your estimate.

Do you repair foggy double-pane windows?

Yes. Failed insulated glass units (the cloudy, moisture-filled look) can be replaced while keeping the existing frames and sashes — restoring clarity and efficiency without a full window replacement.

What window brands do you repair?

We repair and restore Andersen, Marvin, Pella, Jeld-Wen, Milgard, Kolbe, Crystal, Weather Shield, Windsor, Harvey, Simonton, and many custom or historic windows found in New Jersey homes.

Which New Jersey areas do you serve?

We are based in West Caldwell and serve Morris, western Essex, southern Passaic, and northern Union counties — including Montclair, Livingston, Morristown, Summit, Wayne, and surrounding towns.

Are window repairs covered by a warranty?

Yes. Our work includes a workmanship warranty, with optional extended coverage on glass and repairs. Details are confirmed in your written estimate before work starts.

Not sure if it's a repair or a replacement?

Get a free, honest assessment — we'll tell you straight whether we can restore it, and what it saves you versus replacement.

Get a Free Estimate Call +1 (973) 564-0958