Home / Services / Windows & Doors
Windows & Doors · Window RepairWindow Repair in New Jersey
Fixing the parts that fail first (seals, hardware, caulk and sills) so a sound window can keep working, and telling you honestly when it cannot.
NJ HIC #13VH12036000 | Serving homeowners across New Jersey from East Rutherford
- Free inspection & estimateNo-cost first visit
- NJ HIC #13VH12036000Registered Home Improvement Contractor
- East Rutherford headquarters168 Humboldt St
- Convenient online schedulingRequest online, then pick a time
Many window problems do not need a new window
Windows are made of parts that wear at different rates. Weatherstripping compresses, balances weaken, locks loosen and exterior caulk dries out long before a well-built frame gives up. Replacing those parts can restore smooth operation and a tighter seal without the cost of a full replacement.
Common repairs include new weatherstripping, replacement balances or cranks, re-sealing the exterior perimeter, and repairing small areas of sill or trim damage. We start by finding the cause, not just the symptom, so the same problem does not return.
When a repair is not the right answer, we tell you. A frame with rot through it, or a window that can no longer be operated safely, is usually better replaced.
Repairing a window vs. replacing a sealed glass unit
These are two different jobs. A repair fixes the hardware, seals or wood around the glass. When the seal between panes fails and the glass fogs, the fog cannot be repaired from the outside: the fix is a replacement sealed glass unit (sometimes called an insulated glass unit or IGU) made to fit the existing sash, if the window design and sash condition allow it. Otherwise the sash or whole window may need replacing. We explain which applies to your window.
Window problems that are often repairable
If your window has one of these issues, a repair may be all it needs.
Window will not lock
Misaligned or broken sash locks and keepers that no longer pull the sash tight.
Sash will not stay open
Worn balances or springs that let a double-hung sash slide down on its own.
Whistling drafts
Air leaking past flattened weatherstripping or a gap at the meeting rail.
Cracked glass
A broken pane or sealed unit from impact or stress, in an otherwise sound sash.
Gaps at the exterior
Caulk joints that have split or pulled away from the siding or trim.
Localized sill rot
A soft corner or edge of a sill, caught before the rot spreads into the frame.
When repair is enough, and when it is not
We weigh the condition of the whole window, not just the part that failed.
Good candidates for repair
- Frame and sill solid overall
- Problem limited to hardware or seals
- Glass breakage or fogging in a sash that can take a new glass unit
- Window otherwise operates well
Signs repair may not be worth it
- Rot through the frame, not just the surface
- Replacement parts no longer available
- Several failures in the same window
- Many windows with the same age-related problems
Factors that affect the decision
The window’s age and construction, availability of parts, the condition of the frame and sill, and how many windows share the same issue.
When further investigation is needed
Sometimes removing a stop or piece of trim reveals more damage than was visible. If that happens, we pause and talk with you before the scope changes.
How window repair works
Describe
Tell us what the window is doing and send photos if you can.
Diagnose
We find the cause: hardware, seals, glass or water at the exterior.
Options
We explain repair, glass unit replacement or full replacement as they apply.
Estimate
You get a written estimate for the repair you choose.
Repair
Parts are installed, joints sealed and operation adjusted.
Check
We test operation and locking with you before we leave.
Custom glass units and some hardware are ordered to size. We confirm timing with you once parts are identified.
Common window repair parts
Most repairs come down to a handful of components. Matching them to your window is the key.
Weatherstripping
Pile, bulb and foam seals that close the gaps around a closed sash.
Balances & operators
Spring or block-and-tackle balances in double-hungs and crank operators in casements.
Sealed glass units
Two or more panes with a sealed space between, made to size when the original seal has failed.
Sealants & wood repair
Exterior-grade caulk and the repair or replacement of damaged sill and trim sections.
What Our Customers Say
We have not yet received Google reviews about window repair specifically. These are genuine Google reviews about smaller repairs and our work in general.
Excerpt“Matt came out and checked the problem I was having and immediately fixed it. Such a nice and courteous and trustworthy guy.”
Excerpt“Very communicative and helps you understand where and what the problem is. Also he’s very efficient at a reasonable price.”
“Matt came to my house to give an estimate and fix a small problem I had with my roof. He was very professional and communicative; and I would definitely use him and his company again for any of my roofing needs and prepares in the future”
Quoted from our Google Business Profile. Rating and count as of October 28, 2026.
Window repair in your part of New Jersey
We handle window repairs for homeowners in all 21 counties, working out of East Rutherford. Availability can vary by area, so tell us where you are when you reach out.
Headquarters
168 Humboldt St, East Rutherford, NJ 07073
(551) 241-0470 · monarchroofingnj@gmail.com
Service availability can vary by location and schedule. See all service areas.
Window repair FAQs
Can fogged windows be repaired?
The fog itself cannot be cleared from outside the glass. The usual fix is a new sealed glass unit made for your sash, if the window allows it. If not, the sash or window may need replacing.
Is replacing a glass unit the same as replacing a window?
No. A glass unit replacement keeps your existing frame and sash and swaps only the sealed glass. Window replacement removes the unit, and sometimes the frame, and installs a new one.
My double-hung window will not stay up. Can that be fixed?
Usually. That is often a worn balance, which can be replaced if a compatible part is available for your window.
Can you repair a rotted window sill?
Small areas of rot can sometimes be repaired or a sill section replaced. If rot extends into the frame, replacement is often the better choice.
Do you repair old wood windows?
We can evaluate them. Repair options depend on the condition of the wood and whether parts and glass can be matched.
Why does my window leak only in heavy rain?
Wind-driven rain often finds gaps in exterior caulk, flashing or the head trim. We check those areas first.
Will a repair stop drafts?
New weatherstripping and properly adjusted locks often reduce drafts noticeably. Drafts through the frame or wall may need a different fix.
Is the repair estimate free?
Yes. We look at the window and give you a repair estimate at no cost.
Related window services
Also see: Exterior Wood Rot Repair.
Request a Free Window Repair Estimate
Tell us about your project, upload photos if available, and choose your preferred inspection date and time.
Please note: preferred dates and times are requests until your booking is confirmed.
Prefer to talk? Call or text (551) 241-0470 or email monarchroofingnj@gmail.com.
Need a Window Repaired in New Jersey?
Tell us what is sticking, leaking or broken. We will look at the window for free and tell you honestly whether a repair will do.