Glendale Quality Windows
Recommended by over 1,000 Glendale home and business owners.
Glendale Quality Windows handles over 200 window projects annually across Glendale and the greater Los Angeles. We offer complete window solutions to over 25,000 households and 1,500 business clients in the area. Our services range from annual window maintenance to complete window replacements for windows over 15 years old. We're trained on different window types: vinyl, wood, aluminum, fiberglass, casement, double-hung, and sliding windows.
We repair damaged windows and offer emergency repairs to windows affected by extreme weather, such as strong winds and intense heat. It’s a common concern among Southern California residents, where prolonged sun exposure and high temperatures can lead to energy inefficiency and material degradation. Getting your windows serviced is not just a luxury, but a necessity living in Glendale. Every project we undertake meets industry standards in adherence to Southern California's unique climate challenges. Glendale residents and business owners count on us for quick and reliable window solutions. As a committed window partner in Southern California, we also extend our services to our neighbors in Pasadena, Burbank, La Cañada Flintridge, Eagle Rock, and Atwater Village.
Why Choose Us

Local Window Contractors
We have completed over 2,500 window projects across Los Angeles, Orange, Riverside, and San Diego counties. We're knowledgeable of Southern California's unique climate, building codes, and architectural styles, from Spanish Colonial Revival to contemporary designs. Our optimal window solutions perform exceptionally in regional conditions.

Advanced Installation Methods
We only use high-quality materials from leading manufacturers and employ certified installation techniques that maximize performance. Our window installers get at least 40 hours of training yearly to keep them updated with the latest installation techniques and manufacturer warranties.
This commitment has resulted in a customer-reported defect rate of less than 0.5%, well below the industry average of 2%.

Proven Track Record
Our portfolio shows consistent results across diverse project types, from emergency repairs to complex commercial installations. According to our 2024 client satisfaction survey, 97% of our customers rated our project management as “excellent” or “very good.”
We have successfully completed projects ranging from historic home restorations to cutting-edge smart window installations.
What Types of Windows Do We Fix?
Window Glass Issues
Cracked or broken window glass is a safety hazard that requires immediate professional attention. Our glass replacement services use high-quality materials that match original specifications while offering opportunities for upgrade. We offer specialized glass options like Low-E coatings or laminated safety glass.
Seal & Weatherproofing Issues
Leaky or broken seals around windows account for 10–20% of a building’s heat loss. Poor insulation creates thermal bridges that reduce comfort and promote indoor condensation. Modern weatherproofing reduces draft by up to 90%. Sealed and weatherproofed windows make your home more energy efficient and protected.
Broken or Faulty Window Mechanisms
15% of window-related service calls complain of broken or faulty window mechanisms. According to crime prevention studies, windows with broken locks are 3 times more likely to be targeted for break-ins. Repair or replace broke or faulty window systems. Upgrade your home's security through enhanced security features.
Window Frame Issues
25% of all residential window problems are frame-related. Frame damage is usually caused by moisture exposure, temperature fluctuations, structural settling, or material breakdown. Damaged window frame reduces the home's energy efficiency by as much as 30%. Misaligned frames create gaps up to 1/8 inches wide that allow water and air infiltration.
Hard-to-Open Windows
30% of homeowners have windows that are shut, jammed, or difficult to operate. The common causes are accumulated paint, debris buildup, hardware wear, frame distortion, or lubrication issues. Broken rollers in sliding systems can increase operational force by over 50%. We remove obstructions from the window's track, restore the hardware and finishes, and perform targeted adjustments.
Peeling or Fading Window Frames
40% of homes over 10 years old have peeling or faded window frames. Vinyl frames show signs of chalking, fading, or yellowing after 5–7 years of sun exposure. We can restore this using specialized cleaning treatments for minor discoloration. We also replace vinyl window frames in severe cases.
What Types of Window Installation Services Do We Offer?
Residential Window Installation
30% of a home’s heating and cooling energy can be lost through inefficient windows. We address this through our residential window installation services. We strive to meet the unique requirements of single-family homes, condominiums, and multi-family residential properties throughout the Glendale area.
Commercial Window Installation
Commercial buildings save 10-40% on energy costs with high-performance window systems, said the National Institute of Building Sciences. Our commercial window installation complies with local and state energy codes, while accommodating complex scheduling and coordination demands. We can adjust our installation time based on our client's needs through phased installation schedules.
Low-E Glass Window Installation
Low-E glass windows reflect up to 90% of infrared radiation, while allowing over 70% of visible light to pass through. A low-e glass installation reduces cooling costs by up to 25% in Southern California’s climate. It blocks up to 99% of harmful UV rays and minimizes fading and damage to interior furnishings. It is an excellent investment for residential and commercial properties. Our clients see a return on their investment in just 2 to 5 years through energy savings and increased property value.
Triple-Pane Window Installation
Triple-pane windows are the pinnacle of energy efficiency and noise reduction. This window type has three glass layers and insulating gas fills, typically made of argon or krypton. It delivers R-values of 5 to 9, compared to R-values of 2 to 3 for standard double-pane windows. These advanced systems reduce outside noise by up to 50% and lower heating and cooling bills by up to 30%. Although triple-pane windows typically cost 10-15% more than double-pane options, the investment is quickly recouped through energy savings and better indoor comfort.
Aluminum Frame Installation
Aluminum-framed windows are durable and low-maintenance. Its typical lifespan is 30 years, which makes it a practical choice for commercial and residential properties. Modern aluminum frames now feature thermal breaks that reduce heat transfer by up to 60% compared with older designs. Aluminum’s inherent strength allows for larger window sizes with sleeker look. It's one of the top choices for retrofit and new window installations.
Fiberglass Frame Installation
Fiberglass frames offer superior stability and thermal performance compared to traditional materials. It expands and contracts at rates nearly identical to glass. This reduces seal failure and extends the window's lifespan. Fiberglass windows can last up to 50 years with minimal maintenance. These advanced frame systems provide insulation values that are over 15% better than vinyl and up to 500 times less conductive than aluminum without thermal breaks. It is ideal for residential and commercial clients looking for optimal energy efficiency, durability, and long-term value.
What Types of Window Repair Services Do We Offer?
Window Repair Services
According to the U.S. Department of Energy, inefficient windows account for 25%–30% of residential heating and cooling energy use. Fix broken windows to lower We provide comprehensive window repair solutions that address mechanical, structural, and efficiency issues across all major window types. Repairing instead of replacing windows can save you as much as 30% in electricity use.
Sliding Window Sash Repair
Sliding windows suffer from worn-out rollers, misaligned tracks, and deteriorated seals. This causes drafts and water intrusion. To repair sliding windows, we replace rollers and install new weatherstripping. This improves the window's efficiency by at least 10%.
Locks and Latches Repair & Replacement
30% of intruders enter through unlocked or poorly secured windows, according to FBI crime statistics. We make sure that your window's locks and latches
Our services ensure that locks and latches meet modern security standards. We replace outdated or faulty hardware with durable, tamper-resistant components that give you peace of mind.
Single-Hung and Double-Hung Window Sash Repairs
We fix vertical sliding windows by repairing or replacing sash cords, adjusting counterbalance systems, and eliminating movement resistance caused by age or wear. These repairs can restore up to 95% of the window's full functionality. It reduces air infiltration by as much as 15%, which improves indoor temperature stability and energy savings without the cost of full window replacement.
Casement Window Repair
Casement windows are among the most energy-efficient window styles because of their tight seals. We repair hinges, cranks, and weatherstripping of casement windows. This restores 30% of the window's efficiency. Properly functioning casement windows reduce outside air infiltration. And, it provides optimal ventilation for the home.
Hinges Repair & Replacement
Worn hinges cause sagging, sticking, and seal failure in windows. We repair or replace these parts to restore structural support and mobility. This reduces long-term wear on other components of the window by up to 40%. Optimal hinge performance maintains the airtight seal of the home that keeps it energy efficient.
PREMIUM WINDOWS FOR YOUR GLENDALE HOME
Discover how much you could save with Energy Star-qualified windows. Get your free estimate today and join thousands of satisfied customers who've upgraded to premium window solutions.
What Special Window Installation Services
Do We Offer?
Noise Reduction Window Installation
Noise reduction windows use specialized glass configurations and frame designs that significantly reduce sound transmission from exterior sources. It's ideal for properties near busy streets, airports, or other noisy areas. Noise reduction windows use laminated glass and have increased air spaces. With its leveled-up sealing, it reduces noise by at least 30% compared to standard windows.
Acoustic Glass Installation
Acoustic glass offers the highest level of sound control through specialized laminated glass with sound-dampening interlayers. These advanced glass systems are engineered for noise control. It offers superior performance compared to standard laminated glass while maintaining optical clarity.
Bulletproof Window Installation
Bulletproof windows provide enhanced security for commercial and residential clients who need extra protection. These specialized installations utilize multi-layer glass and polycarbonate systems that meet specific threat level requirements while maintaining acceptable optical properties and integration with existing architectural elements.
Window Installation & Repair FAQs
How long does a typical window installation or replacement project take?
It takes 1 to 3 days to complete a residential window replacement. A single standard-sized window can be installed in 2 to 4 hours. Larger projects, such as a full-home replacements which involves 10 to 15 windows take at least 3 days.
Do you handle permits and inspections for window installations?
Yes, we handle permits and inspections for our clients. Our team is knowledgeable of Glendale and Los Angeles County building codes. We make sure that every installation meets or exceeds local and state requirements. In California, window replacement often triggers compliance with the Title 24 energy code. Upon completion, you’ll receive copies of all permits and inspection reports for your records, ensuring full transparency and peace of mind.
What warranties do you offer on windows and installation work?
We offer a comprehensive warranty and a 5-year labor warranty. Our window manufacturers also provide a 10 to 20-year warranty on materials and glass. This covers seal failure and hardware defects. ENERGY STAR® certified windows also get extra performance guarantees on insulation and condensation resistance.
How much can I expect to save on energy bills with new windows?
ENERGY STAR® certified windows can lower household energy bills by 12% to 15% annually, according to the U.S. Department of Energy. An average single-family home saves around $125 to $340 per year when replacing old single-pane windows. The exact savings amount varies depending on the home’s size, the number and type of windows, and your energy usage patterns.
Can you match my existing window style for historic or architectural consistency?
Absolutely. We can preserve the architectural integrity of the windows while upgrading their efficiency. We can source or custom-manufacture windows to match any style, including historic, Craftsman, Spanish Colonial, and Mid-Century Modern designs. Local preservation guidelines are observed in every project we undertake. We use modern materials that replicate traditional aesthetics while delivering superior thermal performance and durable windows.