Double Hung
Windows Repair
and Replacement
in Chicago

Name: Apex Window Werks
Brand: Apex Window Werks
Rating: 4.8 (2578 reviews)

Double-hung windows are a staple of Chicago’s classic homes and historic architecture, known for their timeless look and versatile function. But when sashes stick, glass fogs, or frames begin to rot, even the most iconic windows need expert care.

At Apex Window Werks, we specialize in double-hung sash window repair and replacement, helping homeowners throughout Chicago restore function, energy efficiency, and curb appeal — without the expense of full window replacement when it’s not necessary.

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Our Double-Hung
Window Repair Services

We deliver comprehensive repair solutions for every component of your double-hung window system. Our skilled technicians understand the intricate mechanics of sash windows and provide lasting repairs that restore both beauty and function.

Sash Balance System Repair and Replacement

We fix failed spring balances, spiral balances, and cord-and-weight systems that cause sashes to fall or stick. Our precision adjustments ensure both upper and lower sashes glide smoothly and stay exactly where you position them.

Sash Cord and Chain Restoration

For vintage double-hung windows with traditional pulley systems, we replace broken cords or chains while preserving the original hardware. This maintains your window's historic character while restoring reliable operation.

Glass Replacement and Glazing Repair

We replace cracked panes, failed insulated units, and deteriorated glazing compounds. Our glass work matches your window's original specifications while improving energy efficiency and eliminating rattles.

Weatherstripping and Air Seal Upgrades

We install modern weatherstripping systems that eliminate drafts without interfering with sash movement. This dramatically reduces energy costs while maintaining the easy operation your windows were designed for.

Sash Lock and Hardware Restoration

We repair or replace worn sash locks, pulls, and meeting rail hardware. Every component is adjusted for secure closure and smooth engagement, enhancing both security and energy efficiency.

Frame and Sill Repair

We restore water-damaged sills, reinforce loose frames, and rebuild deteriorated jambs. Our repairs address structural issues while maintaining your window's original dimensions and appearance.

Emergency Double-Hung Window Repair

We provide same-day emergency window repairs across Chicago to address urgent issues fast. Whether your glass is shattered or a sash has come loose, we’ll secure and restore it quickly.

Fast Emergency Glass Replacement in Rockford, IL

Full Double-Hung Window Replacement

In cases where frames are too deteriorated or repair is no longer cost-effective, we provide complete double-hung window replacement. Our team installs modern, energy-efficient units that match your home’s architecture and meet today’s performance standards.

Your Windows Should Glide, Not Fight — Let's Fix That Today!

Stop wrestling with stuck sashes or propping windows open with sticks.
Our window repair specialists restore the effortless operation of your double-hung windows that were designed to deliver.

Schedule an Inspection

Or Call Us (847) 557-9600

Common Double Hung
Window Problems We Fix

Double-hung windows face unique mechanical challenges due to their counterbalanced design and moving parts. Our repair experts solve these issues daily:

Falling or Slamming Sashes

When balance systems fail, windows won't stay open or crash down unexpectedly. We diagnose whether it's broken springs, detached balances, or worn pulleys, then implement the right repair to restore safe, controlled movement at any height.

Painted Shut or Stuck Windows

Decades of paint buildup or swollen wood can seal windows completely shut. We carefully free stuck sashes without damage, clean paint from channels, and adjust fit to ensure smooth year-round operation regardless of humidity changes.

Drafty Meeting Rails

The junction where the upper and lower sashes meet is a prime source of air infiltration. We adjust sash alignment, install interlocking weatherstrip, and ensure proper compression to eliminate whistling winds and energy waste.

Broken or Missing Hardware

From sash locks that won't catch to missing tilt latches on newer models, hardware failures compromise security and function. We source exact replacements or suitable upgrades that restore full operability while maintaining your window's style.

Fogged or Failed Insulated Glass

Moisture between double-pane glass ruins views and indicates seal failure. We replace just the affected glass units, restoring clarity and thermal performance without disturbing frames or interior trim.

Rotten Sills and Stiles

Chicago's freeze-thaw cycles and moisture take a toll on wood components. We selectively replace or rebuild damaged sections using rot-resistant materials, preserving as much original millwork as possible.

Difficult Tilt-In Function

Modern tilt-in sashes that won't release or won't lock back properly defeat their easy-cleaning purpose. We repair or replace tilt hardware, adjust jamb liners, and ensure both sashes tilt smoothly for safe maintenance access.

Balance System Failures

Whether your windows use modern coil balances or historic weight-and-pulley systems, we have the expertise to diagnose and repair any counterbalance mechanism, eliminating the frustration of windows that won't stay put.

Professional Double Hung Window
Repair — Precision Work,
Lasting Results!

Don’t settle for windows that barely function.
Our certified technicians diagnose issues accurately and fix them right the first time, backed by our industry-leading warranty.

Schedule an Estimate

Or Call Us (847) 557-9600

Types of Double-Hung
Windows We Repair

Chicago’s diverse architecture means we encounter every style and era of double-hung windows. We’re equipped to handle them all:

Traditional Wood Double Hung Windows

Found in Chicago’s historic neighborhoods, these windows feature authentic divided lights and weight-and-pulley systems. We preserve their architectural integrity while upgrading performance through careful restoration of sashes, frames, and original hardware.

Modern Vinyl Double Hung Windows

Popular in newer construction and replacements, vinyl windows use spiral or block-and-tackle balances. We repair balance systems, replace worn tilt latches, and address common issues like sash bow and seal failure.

Aluminum Double Hung Windows

Common in mid-century buildings, aluminum windows require specialized repair techniques. We fix corroded frames, replace worn pile weatherstrips, and restore smooth operation to even severely neglected units.

Composite and Fiberglass Double Hung Windows

These high-performance windows combine durability with traditional aesthetics. We service all major brands, repairing hardware, replacing glass, and maintaining their superior weather resistance.

Historic Weight-and-Pulley Systems

Chicago’s vintage homes often feature original pocket windows with cast iron weights. We’re one of the few companies still repairing these systems, replacing sash cords, servicing pulleys, and maintaining authentic operation.

Tilt-In and Tilt-Out Models

Modern convenience features require proper maintenance. We repair jamb liners, replace tilt pins and shoes, and ensure both sashes tilt safely for cleaning without binding or falling out.

Chicago's Double Hung Window Repair Experts Are Just a Call Away!

With 40,000+ successful repairs and 15+ years serving the Chicagoland, we’re the trusted choice for double-hung window repair near you. Free estimates, upfront pricing, and guaranteed satisfaction.

Window Brands
We Service in Chicago

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What Our Clients Say

Apex experts came by quickly, were professional, and finished the estimate on the spot. The office followed up with me over the next few weeks as I wasn't ready to make a decision. I then affirmed to move ahead, they scheduled within a week. The installation crew was polite, and professional and did great work. The cost was a good value for the work done. I would highly recommend it. I'm delighted to have my two windows fixed. The one I can open again and the other I can see clearly out again.

Joanne Couture, Arlington Heights, IL

Apex Window Werks replaced the foggy glass on our kitchen window. They carefully removed the old glass pane and installed a new one, ensuring precise measurements and using silicone to secure it properly. From the first person I spoke to on the phone, to the couple of gentlemen who installed the glass, everyone was easy to talk to and they were all very professional. Highly recommended!

Ofelia Miguel, Joliet, IL

Service technicians were polite and professional. They removed damaged parts of the window, cut new pieces to fit, stained the wood, and installed them nicely. The team cleaned up as if they were never there. I would recommend Apex Windows Werks for your window repair. Friends living near me ordered window repairs based on my recommendation as well.

Glenn Kaupert Chicago, IL

Had someone come out to look at a few windows I’m having issues with - none of them needed a full frame replacement at the moment but the technician was incredibly kind and informative. The technician determined that replacing the entire window frame was not necessary, which saved me both time and money. I feel confident about caring for my current windows, I know what to look for to let me know replacements are needed, and I will definitely be coming back to Apex when that is the case. Thank you!

Alyssa Nickow, Elgin, IL

I was thrilled that Apex Windows Werks had the right parts, and was able to come right out and repair my window on site. They were very prompt, and they saved me quite a bit of money over the replacement quote I got from another window company that didn’t do repairs.

Eric Hoffhines, Schaumburg, IL

Why Choose Apex Window Werks
for Double Hung Window Repair?

Masters of Mechanical Window Systems

Double hung windows aren’t just glass in a frame — they’re precision mechanical systems. Our technicians understand every type of balance mechanism, from 1890s pulleys to today’s constant-force springs, ensuring expert diagnosis and repair.

Repair-First Philosophy Saves You Money

While others profit from pushing replacements, we’ve built our reputation on honest assessments and skillful repairs. Most double-hung window issues can be fixed for a fraction of replacement cost, and we’ll always explore repair options first.

Serving All of Chicagoland Since 2008

From Lincoln Park lofts to Naperville estates, we’ve repaired thousands of double-hung windows across every Chicago neighborhood and suburb. Our deep local knowledge means we understand your specific window challenges and architectural requirements.

Same-Day Service for Window Emergencies

Stuck windows in summer heat or drafty windows in winter cold, can’t wait. We prioritize urgent repairs and stock common parts for major brands, often completing repairs in a single visit.

Guaranteed Excellence with 5-Year Warranty

We’re so confident in our repair quality that we back every job with a comprehensive 5-year warranty. When we fix your double-hung windows, they stay fixed.

Frequently Asked
Questions

Why do my double-hung windows keep falling down?

This indicates failed balance systems — either broken springs in modern windows or detached weights in older ones. We diagnose the specific balance type and repair or replace the mechanism to restore proper counterbalance.

Can you convert my old windows to tilt-in style?

While full conversion isn’t always possible, we can often install jamb liner kits in wood windows to add tilt functionality. We’ll assess your windows and discuss options that preserve appearance while adding convenience.

How much does double-hung window repair cost compared to replacement?

Repair typically costs 50-70% less than replacement. Simple balance repairs might run $200-400 per window, while full replacement can exceed $1,000. We provide exact quotes after inspection.

Do you repair windows with broken sash cords?

Absolutely! We’re one of the few Chicago companies still servicing traditional weight-and-pulley systems. We replace sash cord or chain, service pulleys, and ensure smooth operation of these classic mechanisms.

How long does double-hung sash window repair take?

Most repairs are completed in 1-3 hours per window. Complex restorations or multiple windows may take longer, but we’ll provide accurate time estimates upfront and work efficiently to minimize disruption.

Ready to Restore Your Double-Hung Windows to Perfect Working Order?

Whether you’re dealing with stubborn sashes, failed balances, or drafty frames, Apex Window Werks has the expertise to fix it right. Our skilled technicians bring your double-hung windows back to life — operating smoothly, sealing tightly, and looking great.