Glass Block & Window Replacement in Frankfort, IL
Since 1986, Frankfort homeowners have trusted Legacy Glass Block & Window Co. for glass block windows, vinyl replacement windows, siding, and entry doors — all backed by a lifetime warranty and zero money down.
Trusted Frankfort Window Experts
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5-Star Reviewed
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Lifetime Warranty
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40 Years of Excellence
Protecting Frankfort Homes for Over 40 Years
We respect the classic architecture found near Historic Downtown Frankfort, providing upgrades that maintain aesthetic integrity.
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Energy-Efficient Windows
We offer the highest quality windows that not only lower energy bills, but also elevate your curb appeal.
Explore Our Window Replacement Services →
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Secure Glass Block
Our heavy-duty glass block installs ensure that your basement is protected from burglars. All while allowing maximum light-transmission.
Explore Frankfort Glass Block Installation →
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Complete Siding Upgrades
Our total siding solutions will transform the entire look of your home all while preserving the historic architecture of Downtown Frankfort homes.
Explore Our Vinyl Siding Services →
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Stunning Entry & Patio Doors
Make a statement with your front door. It is the first thing people see when they enter your home.
Enhancing Modern Estates
Our modern exterior solutions perfectly complement the large, newer-built, higher-end homes found throughout Frankfort. In newer subdivisions like Prestwick and the estates near the Frankfort Square area, buyers and appraisers expect exteriors that match the quality of the home behind them — dated windows or worn siding stand out fast in this market. We install highly durable, energy-efficient products designed to withstand harsh Illinois winters while protecting the long-term value of one of Frankfort's most competitive segments of the housing market.
Browse reviews from Frankfort-area families we've worked with.
Why Frankfort Trusts Legacy
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UNMATCHED CRAFTSMANSHIP
Our unmatched craftsmanship serves as a clear testament to 40 years of unwavering dedication to exterior excellence.
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INDUSTRY-LEADING REVIEWS
Achieve the total peace of mind that comes with our industry-leading client satisfaction and verified service record.
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LIFETIME WARRANTY
Our commitment to excellence includes a guaranteed lifetime protection policy that you can trust for your home.
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PROVEN EXPERTS
Trust your home project to a proven team of experts with verified skills and decades of knowledge.
OUR REVIEWS
EASY 4-STEP PROCESS
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REQUEST AN ESTIMATE
We offer expert guidance during your complimentary local project consultation.
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CUSTOMIZED MEASURING
We carefully measure your exact openings to ensure perfect fits.
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ONE DAY UPGRADES
We guarantee your new windows are installed in one day.
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FINAL INSPECTION
We double check all the work to ensure maximum lasting quality.
SET-UP YOUR FREE QUOTE
ZERO MONEY DOWN FINANCING
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Low Monthly Payments
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No Money Down
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0% Interest Promotions
