Get expert basement window repair and replacement in Chicago from Apex Window Werks. With over 15 years of experience, our technicians specialize in basement window systems and prioritize honest assessments and affordable solutions. We restore function, security, and energy efficiency, aiming to preserve your investment and avoid unnecessary full replacements.
Basement Window Replacement and Repair Services
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Top Rated Window Repair Contractors in Chicago, IL
Happy Clients
11 283
Years in Business
15+
Jobs Completed
14 428
Average Ratings
4.8
Basement Window
Repair Services We Offer
Basement windows face unique challenges from ground-level moisture, pressure, and accessibility issues. Our team specializes in below-grade repairs that stand up to Chicago weather.
Building codes require proper emergency exits from basement bedrooms. We install compliant egress windows with correctly sized wells, safe opening mechanisms, and proper drainage. Our installations pass inspection while improving natural light and ventilation.
Foggy or cracked glass doesn't always mean you need a new window. We replace failed insulated glass units (IGUs) while preserving your existing frames. This restores thermal efficiency, eliminates condensation, and improves the look of your basement at a fraction of the replacement cost.
A functional basement window starts with a proper well. We repair rusted or detached wells, improve drainage systems to prevent pooling, and install custom-fit covers. Our services ensure that water and debris stay away from your window frames and foundation.
We apply high-grade, weather-resistant caulking to the exterior perimeter where the window frame meets your home’s foundation. This critical seal prevents water from seeping into your basement walls and protects your home from the damaging effects of Chicago’s freeze-thaw cycles.
Seal and Weatherstrip Replacement
Basement windows are highly susceptible to drafts and moisture. We install high-performance seals and professional-grade weatherstripping specifically designed for below-grade applications. This prevents water infiltration and helps regulate your home's temperature.
Ground-level windows are critical for home security. We repair or upgrade heavy-duty locks, hinges, and latches that have become stiff or corroded. Our hardware solutions ensure your windows close tightly and stay secure against intruders.
Whether it’s rotted wood, rusted steel, or warped vinyl, we restore the structural integrity of your basement window frames. We address issues caused by soil pressure and moisture, ensuring the frame is square, stable, and ready to protect your home.
Basement Window Leaking During Storms?
We eliminate water entry with proper well drainage, upgraded seals, and moisture barriers designed for
Chicago’s below-grade challenges and heavy rainfall patterns.
Schedule an Inspection
Or Call Us
(847) 557-9600
Basement Window Issues
We Can Help You With
Chicago basements face moisture, temperature swings, and settling that create specific window challenges:
Condensation between glass panes is a sign of a failed seal. We replace the glass unit to restore clarity and energy efficiency, preventing the "cloudy" look common in older basement windows.
Gaps around basement windows are a major source of energy loss. We identify air leaks and apply precision caulking and weatherstripping to stop cold Chicago winters from driving up your heating bills.
Water Leaks and Flooding During Storms
Chicago’s heavy rains can quickly overwhelm poorly sealed basement windows. We trace water entry points, fix improper slopes, and reinforce seals to keep your basement dry and prevent mold growth.
Stuck or Difficult-to-Open Sashes
Foundation settling and moisture can cause basement windows to bind or seize. We realign frames and service hardware to restore smooth operation, ensuring you can easily open your windows for ventilation or in an emergency.
Non-Compliant Emergency Exits
If your basement includes a bedroom or living space, it must meet specific egress codes. We evaluate your current windows and provide the necessary upgrades to ensure your home is safe and legally compliant.
Rusted or Corroded Components
Constant exposure to ground moisture is tough on metal frames and hardware. We treat surface rust, replace corroded parts, and apply protective coatings to extend the life of your windows in damp environments.
Basement Window Problems Getting Worse?
Don’t let basement window problems lead to water damage, energy loss, or safety hazards. Water damage spreads fast in basements —
act now to protect your foundation, belongings, and indoor air quality with professional repairs.
Schedule an Inspection
Or Call Us
(847) 557-9600
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We Repair in Chicago
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What Our Clients Say
Trusted Chicago Basement Window
Repair & Replacement Company
Below-Grade Specialists Since 2008
Basement windows require a different approach than standard house windows. With over 15 years of experience in the Chicagoland area, we understand the unique challenges of soil pressure, drainage, and local egress codes.
The "Repair First" Philosophy
Many contractors will push for a total basement window replacement at the first sign of a leak. At Apex, we prioritize restoration. If we can save your window through expert repair, we will — saving you money and construction mess.
Chicago Weather-Tested Solutions
From frozen ground in winter to torrential summer rains, our repairs are designed to withstand Chicago’s extreme climate. We use premium materials that resist rust, rot, and moisture better than standard builder-grade options.
Fast, Reliable, and Guaranteed
We know a broken basement window can be a security and flooding risk. Our mobile teams are equipped to handle most repairs on the spot, and every job is backed by our industry-leading 5-year workmanship warranty.
Frequently Asked Questions About
Basement Window Repair
When should I repair versus replace my basement window?
Repair makes sense for functional frames with isolated issues like broken glass, failed hardware, or worn seals. Replace when frames are severely rotted, windows don’t meet current codes, or chronic moisture has caused extensive damage. We assess structural integrity, operation quality, and energy performance to recommend the most practical path forward.
What causes basement windows to leak?
Common causes include improperly sloped window wells that trap water, deteriorated caulking around frames, and failed weather stripping. Foundation settling creates gaps, while high water tables push moisture through concrete. We identify your specific cause and implement targeted solutions rather than guessing.
Do I need egress windows in my basement?
Chicago requires egress windows for any basement bedroom with minimum opening dimensions of 5.7 square feet and sill height no more than 44 inches from floor. Finished basements without bedrooms don’t legally require egress, but they add safety and property value.
How do I stop condensation on basement windows?
Install insulated dual-pane glass units and improve basement ventilation with fans or dehumidifiers. Seal air leaks that bring humid air to windows and maintain consistent temperature. We evaluate your moisture source and recommend appropriate fixes.
Can window well covers prevent problems?
Quality covers prevent debris and precipitation from filling wells, reducing maintenance and moisture issues. However, covers trap humidity if wells lack drainage, potentially worsening condensation. We install covers with proper ventilation paired with adequate drainage for best results.
Get Your Basement Window Fixed Fast!
Our expert technicians in Chicago provide quick and reliable basement window repair, often completing the job in a single visit. From minor hardware fixes to complete window well installation, our skilled team prioritizes your windows’ performance and your home’s safety. Contact us today to schedule your free estimate!
