
Google Reviews Door Repair & Complete Door Services
A door does not always need to be replaced because it is hard to open, will not close, does not lock properly, or has damaged hardware.
WindowFixGuru™ is an EPA Lead-Safe Certified Firm.
WindowFixGuru™ provides complete residential and commercial door repair services for many types of interior and exterior doors. We repair door hardware, locks, handles, hinges, closers, rollers, tracks, multipoint locking systems, weatherstripping, glass, screens, frames, jambs, and other door components.
We work on entry doors, interior doors, exterior doors, patio doors, sliding and gliding doors, French doors, storm doors, screen doors, European doors, wood doors, commercial doors, and specialty door systems.
We also repair rotten wood, replace damaged glass, adjust doors that rub or sag, service difficult-to-find hardware, and install new doors when repair is no longer the best option.
Our approach is simple: repair when possible, replace when necessary.
Get a Free Estimate
Tell us what's wrong and we'll recommend the right repair.
We service windows from leading manufacturers

Complete Residential Door Repair
Many door problems can be repaired without replacing the entire door.
A door that rubs against the frame may only need an adjustment. A patio door that is difficult to slide may have worn rollers. A door that will not lock may have an alignment or hardware problem. A draft around an exterior door may come from damaged weatherstripping or an improper fit.
We repair doors that:
- Will not open or close properly
- Rub against the frame
- Sag or sit unevenly
- Will not latch
- Will not lock
- Have loose or damaged hinges
- Have broken handles or locks
- Have damaged multipoint hardware
- Are difficult to slide
- Have worn rollers
- Have damaged tracks
- Have broken closers
- Slam or close too quickly
- Will not stay closed
- Have damaged weatherstripping
- Allow drafts or water around the door
- Have broken or foggy glass
- Have rotten wood
- Have damaged frames, jambs, or sills
- Have damaged screens
- Need general adjustment or maintenance
Sometimes the door itself is still in good condition and only one part has failed.
We start by finding that part.
Get an EstimateDoor Types We Repair
Different doors use different hinges, locks, rollers, tracks, handles, closers, seals, and operating systems.
WindowFixGuru™ works with a wide range of residential and commercial doors.
Entry Door Repair
Your front entry door is one of the most frequently used doors in the house.
Over time, hinges can wear, the door can sag, locks can become difficult to operate, weatherstripping can fail, and the door may stop fitting the frame correctly.
We repair entry door alignment, hinges, locks, handles, weatherstripping, glass, frames, jambs, thresholds, and other serviceable components.
Exterior Door Repair
Exterior doors are exposed to temperature changes, moisture, sunlight, and constant use.
Common problems include sticking, sagging, drafts, damaged weatherstripping, difficult locks, worn hinges, rotten wood, and frame problems.
We inspect the complete door system before deciding what needs to be repaired.
Interior Door Repair
Interior doors can develop many of the same alignment and hardware problems as exterior doors.
We repair doors that rub, sag, will not latch, will not stay closed, have loose hinges, damaged handles, broken locks, or other operating problems.
Patio Door Repair
Patio doors can be expensive to replace, and many common patio door problems can be repaired.
WindowFixGuru™ services sliding, gliding, hinged, French, and other patio door systems.
We repair:
- Patio door rollers
- Tracks
- Locks
- Handles
- Latches
- Hinges
- Multipoint locks
- Weatherstripping
- Door alignment
- Glass
- Screens
- Screen door rollers
- Screen door tracks
- Other operating hardware
A patio door that is becoming difficult to move does not necessarily need replacement.
Worn rollers, a damaged track, poor adjustment, or another mechanical problem may be responsible.
Sliding & Gliding Door Repair
A properly working sliding door should move smoothly without requiring excessive force.
If the door feels heavy, drags, jumps off the track, makes noise, or becomes difficult to lock, we can inspect the rollers, track, lock, handle, frame, and alignment.
Sliding door repair may include roller replacement, track service, lock repair, handle replacement, adjustment, weatherstripping, glass replacement, or screen repair.
The goal is to restore smooth operation while keeping the existing door whenever practical.
French Door Repair
French doors need proper alignment for both door panels to close and lock correctly.
Small changes in the hinges, frame, or door position can cause the doors to rub, create gaps, or prevent the locking system from working.
We repair and adjust French doors, including:
- Hinges
- Handles
- Locks
- Multipoint locking systems
- Flush bolts
- Astragals
- Weatherstripping
- Alignment
- Glass
- Frames and jambs
- Thresholds
We work on both traditional and modern French door systems.
Hinged Patio Door Repair
Not every patio door slides.
Many patio entrances use single or double hinged doors, including French-style patio doors.
We repair hinges, locks, handles, multipoint hardware, weatherstripping, glass, alignment, frames, and other components.
Storm Door Repair
Storm doors take a lot of abuse from weather and everyday use.
A storm door may stop closing properly, slam shut, fail to latch, rub against the frame, or develop problems with the closer, hinges, glass, screen, or handle.
We repair and service:
- Storm door closers
- Handles
- Locks
- Latches
- Hinges
- Glass
- Screens
- Frames
- Weatherstripping
- Door alignment
- Other storm door hardware
When repair is not practical, storm door replacement may also be an option.
Screen Door Repair
Screen doors should open and close easily while keeping insects outside and allowing fresh air into the home.
We repair sliding screen doors, patio screen doors, and other screen door systems.
Services may include:
- Screen mesh replacement
- Screen frame repair
- Roller replacement
- Track service
- Handles
- Latches
- Adjustment
- Custom screen doors
- Retractable screen systems
- Specialty screen materials
Retractable Door Screens
Retractable screens are a useful option for doors where a permanent screen is not desirable.
Depending on the opening and door system, retractable screens can be used with entry doors, French doors, patio doors, and other large openings.
We can help determine whether a retractable screen system is practical for the existing opening.
American & European Door Repair
WindowFixGuru™ works with both American and European door systems.
European doors often use more complicated hardware than a standard residential door.
A single handle may control several locking points around the door. The system may include a gearbox, locking strip, hooks, rollers, shoot bolts, corner components, hinges, and multiple strikers.
When one part fails or the door becomes misaligned, the complete locking system may stop working correctly.
We diagnose the hardware before recommending replacement of the entire door.
European Door & Multipoint Lock Repair
Multipoint locking systems are common on European doors and many higher-end American entry and patio doors.
When the handle is lifted or turned, several locking points engage at the same time.
Problems may include:
- Handle will not move
- Handle moves but door will not lock
- Key will not turn
- Lock is difficult to operate
- Door must be pushed or lifted to lock
- Multipoint mechanism is stuck
- Gearbox is damaged
- Hooks or locking points do not engage
- Door is out of alignment
- Hinges need adjustment
- Strikers are misaligned
The problem may be the lock mechanism, but it may also be caused by door alignment.
That is why the complete system should be checked before parts are replaced.
Door Hardware Repair & Replacement
Door hardware does a lot of work.
Handles, locks, hinges, rollers, closers, and other moving parts wear over time.
WindowFixGuru™ repairs and replaces many types of door hardware, including:
- Door handles
- Knobs
- Levers
- Locks
- Deadbolts
- Mortise locks
- Cylinders
- Latches
- Multipoint locks
- Gearboxes
- Locking strips
- Hooks
- Rollers
- Shoot bolts
- Flush bolts
- Hinges
- Pivots
- Closers
- Patio door locks
- Sliding door handles
- Storm door hardware
- Commercial door hardware
- Specialty hardware
- Discontinued hardware

Multipoint Door Lock Repair
A broken multipoint lock does not automatically mean you need a new door.
These systems can be complicated, but many problems come from a failed gearbox, lock strip, handle, cylinder, striker, or alignment issue.
We inspect how the complete system operates before deciding which component needs attention.
Proper diagnosis is especially important because installing a new lock mechanism will not solve the problem if the door itself is badly misaligned.
Mortise Lock Repair & Replacement
Mortise locks are used in many residential, traditional, high-end, and commercial doors.
Get a Free EstimateWe work with mortise locks, cylinders, handles, trim, latches, and related hardware.
Older mortise hardware may sometimes require careful matching because the original lock is no longer manufactured.

Door Hinge Repair & Adjustment
A small hinge problem can affect the entire door.
Worn, loose, bent, or improperly adjusted hinges can cause a door to sag, rub, create gaps, or stop locking properly.
We inspect the hinges along with the door position and frame.
Depending on the problem, the solution may involve adjustment, repair, reinforcement, or hinge replacement.
Get an EstimateSagging Door Repair
A sagging door may rub at the top or bottom, become difficult to close, or stop lining up with the lock.
The cause can be worn hinges, loose fasteners, movement in the frame, door weight, or another alignment problem.
Instead of simply modifying the door to make it close, we try to identify why it moved.
Get an EstimateDoor Adjustment & Alignment
Not every door problem requires a new part.
Sometimes the door and hardware are still good but no longer line up correctly.
Door adjustment can help with:
- Sticking doors
- Rubbing doors
- Sagging doors
- Uneven gaps
- Doors that will not latch
- Doors that will not lock
- Difficult multipoint locks
- Patio doors that do not close correctly
- French doors that do not line up
- Exterior doors with air gaps
Door Lock Repair
A lock can fail for several reasons.
The lock itself may be worn or broken, but the door may also have moved enough that the latch or locking points no longer line up with the frame.
We inspect the lock, handle, cylinder, striker, hinges, and door alignment to determine what is causing the problem.
We work with standard locks, deadbolts, mortise locks, multipoint locks, patio door locks, storm door locks, and many specialty locking systems.
Door Handle Repair & Replacement
A loose, broken, or difficult-to-operate handle can be a simple problem or a sign of an issue inside the lock mechanism.
We replace and repair many residential and commercial door handles, levers, knobs, patio door handles, and specialty hardware.
When replacing hardware, we try to match the existing configuration and finish when practical.

Door Closer Repair & Replacement
Door closers are common on storm doors, commercial doors, and some residential applications.
A damaged or poorly adjusted closer may cause a door to slam, close too slowly, remain open, or fail to latch.
Depending on the closer, it may be possible to adjust the closing speed and force. Failed units can also be replaced.
Get an EstimateDrafty Door Repair & Weatherstripping
A draft around a door does not automatically mean that the door needs replacement.
Air can enter around worn weatherstripping, an improperly adjusted door, the bottom sweep, threshold, or gaps between the door and frame.
We inspect where the air is entering before deciding what should be repaired.
Services may include:
- Weatherstripping replacement
- Door sweep replacement
- Threshold adjustment
- Door alignment
- Hinge adjustment
- Sealing
- Hardware adjustment

Door Glass Replacement
Broken or foggy door glass does not always require replacement of the entire door.
Depending on the door construction, the glass unit may be replaceable.
We work with glass in:
- Entry doors
- Patio doors
- French doors
- Sliding doors
- Storm doors
- Commercial doors
- Sidelights
- Transoms
- Fixed door panels
Glass options may include:
- Single-pane glass
- Double-pane insulated glass
- Triple-pane insulated glass where applicable
- Low-E glass
- Tempered glass
- Laminated glass
- Safety glass
- Clear glass
- Tinted glass
- Privacy glass
- Obscure glass
- Patterned glass
- Decorative glass
Foggy Patio & Door Glass
Moisture or fog between the panes of a patio or exterior door usually means that the insulated glass seal has failed.
If the door itself is still in good condition, replacing the failed insulated glass unit may be possible without replacing the complete door.
We measure the existing glass and determine the correct replacement configuration.
Sidelight Glass Replacement
Sidelights are the narrow glass sections beside an entry door.
Broken, foggy, or outdated sidelight glass may sometimes be replaced while keeping the existing door and frame.
We work with clear, insulated, tempered, laminated, privacy, decorative, and other appropriate glass options.
Rotten Wood Door Repair
Wood exterior doors and frames are exposed to moisture and weather.
Rot can develop around the bottom of the door, jamb, threshold, sill, trim, or other areas.
Depending on the extent of the damage, it may be possible to repair the affected area without replacing the complete door system.
We work with damaged:
- Door frames
- Jambs
- Exterior trim
- Threshold areas
- Wood door components
- Patio door wood components
The condition of the surrounding structure is important. We inspect the damage before deciding whether repair or replacement makes sense.
Traditional & Older Door Repair
Older doors can be difficult and expensive to replace, especially when they have custom dimensions, original trim, unusual hardware, or architectural value.
We work with many older door systems and try to preserve existing components when practical.
Repairs may involve hinges, locks, mortise hardware, handles, alignment, wood components, glass, weatherstripping, or discontinued hardware.
Sometimes keeping a well-built older door and repairing the failed components is the better solution.
Commercial Door Repair
WindowFixGuru™ also provides commercial door repair and service.
Commercial doors often use heavier hardware and see much more daily use than residential doors.
We work with commercial door problems involving:
- Aluminum doors
- Storefront doors
- Commercial glass doors
- Door closers
- Locks
- Handles
- Pivots and hinges
- Weatherstripping
- Door alignment
- Glass
- Thresholds
- Commercial hardware
Storefront Door Repair
Storefront aluminum and glass doors use specialized pivots, closers, locks, handles, thresholds, and glass.
Heavy daily use can cause these components to wear or move out of adjustment.
We service storefront doors that are difficult to open, fail to close, rub, slam, do not latch, or have damaged hardware or glass.
Door Screen & Patio Screen Service
Patio doors and other exterior doors often depend on a separate screen system.
Get a Free EstimateWe repair screen mesh, frames, rollers, tracks, handles, latches, and other screen door components.
Custom replacement screens and specialty mesh options are also available.
Door Installation & Replacement
Some doors are worth repairing. Others have reached the point where replacement makes more sense.
WindowFixGuru™ also provides interior and exterior door installation.
We work with:
- Entry doors
- Exterior doors
- Interior doors
- Patio doors
- French doors
- Sliding doors
- Storm doors
- Specialty doors
- American door systems
- European door systems
Depending on the project, we can provide the door and installation or install a customer-supplied door.
Correct measurements, leveling, fastening, frame preparation, weatherproofing, insulation, flashing where required, sealing, hardware setup, and final adjustment all matter.
A good door will not perform correctly if it is installed poorly.
Door Materials We Work With
We service doors made from many different materials and combinations of materials, including:
- Wood
- Fiberglass
- Steel
- Aluminum
- Vinyl
- Composite materials
- Wood-clad systems
- Aluminum and glass
- Commercial storefront systems

Hard-to-Find & Discontinued Door Parts
Older doors can still be in excellent condition even when one piece of hardware fails.
The challenge is often finding the correct part.
We work with older and discontinued locks, multipoint mechanisms, handles, hinges, rollers, patio door hardware, mortise locks, and other components.
We identify parts by manufacturer markings, dimensions, shape, function, and the existing door system.
If the original part is no longer available, we look for a compatible replacement or another practical solution when possible.
Get an EstimateDoor Brands & Hardware Manufacturers
WindowFixGuru™ works on door systems and hardware from many manufacturers.
Depending on the product and available parts, we service systems associated with brands such as:
Andersen, Renewal by Andersen, Pella, Marvin, JELD-WEN, Therma-Tru, ProVia, Masonite, Simpson, Larson, EMCO, Stanley, Marvin Integrity, Truth/AmesburyTruth, Roto, Hoppe, GU, SIEGENIA, and others.
We also work on doors where the brand is unknown or the original hardware has been discontinued.
WindowFixGuru™ is an independent repair company. Brand names are used to identify products and systems we service and do not imply manufacturer affiliation unless specifically stated.
The answer depends on what is actually wrong.
If the door is in good condition but has a failed lock, hinge, roller, closer, handle, glass unit, weatherstripping, or other replaceable component, repairing it may make more sense.
The same applies to many alignment problems.
A door that will not lock does not automatically need replacement.
A patio door that is difficult to slide does not automatically need replacement.
A broken multipoint lock does not automatically mean that the entire door is bad.
If the door or frame has major structural damage, severe deterioration, or several problems that make repair impractical, replacement may be the better option.
We inspect the problem first.
Explore Our Services to Repair, Maintain, and Improve Your Existing Windows and Doors

Interior/Exterior Door Repair & Adjustments
Professional interior and exterior door repair and adjustments to correct sticking, sagging, misalignment, drafts, locking problems, and difficult everyday operation.
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Hardware Maintenance & Replacement
Professional maintenance and replacement for door handles, locks, hinges, closers, and hardware to improve security, performance, reliability, and everyday operation.
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Patio Door Repair & Maintenance
Reliable patio door repair and maintenance for rollers, tracks, locks, handles, alignment, and seals to improve smooth operation and overall reliability.
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Storm Door Repair & Maintenance
Complete storm door repair and maintenance for hinges, closers, handles, screens, alignment, and seals to restore dependable operation and lasting results.
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Interior/Exterior Door Installation
Professional interior and exterior door installation with precise fitting, proper alignment, secure hardware, effective sealing, smooth operation, and attractive results.
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Window Maintenance
Professional window maintenance keeps windows operating smoothly, prevents costly problems, improves energy efficiency, and extends the lifespan of existing systems.
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Glass Replacement
Restore safety, clarity, comfort, and energy efficiency with professional service for damaged, cracked, foggy, or broken window and door glass.
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Historical Window Repair & Maintenance
Specialized historical window repair preserves original character, restores proper operation, improves performance, and maintains the architectural integrity of older properties.
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Rotten Wood Repair & Replacement
Rotten wood repair restores damaged frames, sashes, sills, and trim while preserving usable components and preventing further serious structural deterioration.
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Low-E Glass Upgrade
Low-E glass upgrades improve insulation, reduce heat transfer, block harmful UV rays, increase comfort, and enhance year-round window energy efficiency.
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Screen Repair & Replacement
Screen repair and replacement restores airflow, visibility, and protection from insects using durable materials fitted accurately to windows and doors.
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Commercial Window Service & Repair
Commercial window service keeps business properties secure, functional, and efficient through professional repairs, maintenance, and inspections.
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Window Installation
Professional window installation ensures proper fit, sealing, operation, and energy performance while improving comfort, durability, and overall property value.
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Glass Replacement
Whenever practical, we replace only the damaged or failed glass while preserving the components that are still performing properly.
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Screen Repair & Replacement
Our goal is to restore a secure fit, clean appearance, proper airflow, reliable insect protection, and smooth operation.
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Rotten Wood Repair & Replacement
Rotten or water-damaged wood does not always mean your entire window needs to be replaced.
Learn moreMore Window & Door Services
Complete repair solutions for residential and commercial windows and doors.
Window Services
- Window Adjustment
- Window Recaulking & Sealing
- Window Reglazing
- Sash Repair & Restoration
- Window Mechanism Repair
- Balance Replacement
- Operator Repair
- Lock & Handle Replacement
- Weatherstripping
- Draft Repair
- Foggy Glass Replacement
- IGU Replacement
- Custom Glass Replacement
- Sidelight Glass Replacement
- Sunroom Window Repair
- Greenhouse Glass Repair
- Bay & Bow Window Repair
Door Services
Our Work
Frequently Asked Questions About Door Repair
Can you repair a door that will not close?
Yes. A door that will not close may have an alignment problem, worn hinges, a frame issue, damaged hardware, or another mechanical problem.
Why is my door rubbing against the frame?
The door may have sagged, the hinges may be loose or worn, or the frame may have moved. We inspect the door before deciding what adjustment is needed.
Can you repair a door that will not lock?
Yes. The problem may be the lock, handle, cylinder, striker, hinges, or door alignment.
Why do I have to lift my door to lock it?
This often indicates an alignment problem. The door and locking points may no longer line up correctly.
Can you replace a broken door handle?
Yes. We repair and replace many types of door handles, levers, knobs, and patio door handles.
Do you repair patio doors?
Yes. We repair sliding, gliding, hinged, and French-style patio doors.
Why is my sliding patio door so hard to open?
Worn rollers, damaged tracks, dirt or damage in the track, poor adjustment, or door alignment can make a sliding door difficult to move.
Do you repair storm doors?
Yes. We repair storm door closers, handles, locks, latches, hinges, glass, screens, and alignment problems.
Why does my storm door slam?
The closer may need adjustment or replacement. The door and hinges should also be checked.
Can you replace broken glass in a door?
Yes. Depending on the door construction, we can often replace the glass without replacing the entire door.
Can you repair rotten wood around my door?
Depending on the extent of the damage, yes. We can repair many damaged wood jambs, frames, trim areas, and other door components.
Can you fix a draft around my front door?
Often, yes. The cause may be weatherstripping, alignment, the threshold, door sweep, or another sealing problem.
Can you adjust my door instead of replacing it?
In many cases, yes. If the door and frame are still in good condition, adjustment may solve the problem.
Do you repair commercial doors?
Yes. We service many commercial and storefront door systems, including hardware, closers, locks, pivots, alignment, weatherstripping, and glass.
Do you install new doors?
Yes. When repair is not practical or a new door is desired, we also provide door installation.
Is it better to repair or replace my door?
It depends on the condition of the door and the problem. A failed piece of hardware, broken glass unit, worn roller, or alignment issue often does not require complete replacement. Major structural damage may be a different situation.
How do I know what part is broken?
You do not need to know. Tell us what the door is doing — for example, it will not lock, it rubs, the handle spins, or the patio door is difficult to slide. We can diagnose the problem from there.
Can I send you pictures of the door?
Yes. Photos can often help us understand the type of door, hardware, glass, or visible damage before the visit.
Can I get an estimate for door repair?
Yes. Call WindowFixGuru™ at 516-841-5048 to discuss the problem and schedule an estimate.
One Door or a Complete Property
You may have one front door that will not lock, a patio door that is difficult to slide, or several doors throughout a property that need different repairs.
WindowFixGuru™ handles both small repairs and larger projects.
We work with door hardware, alignment, locks, hinges, rollers, tracks, glass, screens, weatherstripping, rotten wood, commercial doors, and complete door installation.
You do not need to diagnose the problem yourself.
Tell us what the door is doing, and we will start from there.
Request a Door Repair Estimate
Have a door that is sticking, sagging, difficult to slide, hard to lock, drafty, damaged, or simply not working correctly?
Call WindowFixGuru™ at 516-841-5048 to schedule an estimate.
Door repair. Hardware. Adjustments. Patio doors. Storm doors. Glass. Screens. Commercial doors. Door installation. One company for the complete door system.
Serving 300+ Communities
We cover Nassau County, Suffolk County, Queens County, and New Jersey, plus Upstate New York and Connecticut, including all the listed areas:
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