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F.A.Q. Glass Block 

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  • How much does professional glass block window installation cost?  Costs typically range from $500–$1,200 per window (materials + labor), depending on size, pattern, thickness, and whether it's a replacement or new opening. Factors like basement vs. bathroom applications or custom designs can influence pricing. We provide free, no-obligation quotes tailored to your project for accurate Illinois-area estimates.

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  • What is the installation process for glass block windows?  We remove the old window (if replacing), prepare the opening, lay a stable base, stack and install the pre-fabricated panel ensuring a structural, watertight seal, then finish with proper anchoring and sealing. Professional installation ensures compliance with local codes, prevents leaks, and delivers a clean, long-lasting result—far superior to DIY attempts.

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  • How long does it take to install glass block windows?  Residential applications are usually finished in 1 day including removal of the old unit, installation, and cleanup. Commercial projects may span 2–5 days. We minimize disruption and leave your space cleaner than we found it.

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  • Do glass block windows provide good privacy and security? Yes—patterned or frosted blocks diffuse light beautifully while blocking direct views, making them ideal for basements, bathrooms, and ground-level areas. Their solid construction also deters break-ins better than standard glass, adding both privacy and enhanced home security.

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  • Are glass block windows suitable for basements in the Chicago area?  Absolutely—they excel in basements by allowing natural light, resisting moisture and freeze-thaw cycles common in Illinois winters, and meeting egress requirements when properly designed (we can include vented options for ventilation). Our installations are built to handle local weather and building codes.

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  • Do you offer warranties on glass block window installations? Yes, we stand behind our work with comprehensive warranties on both materials and labor (typically 10+ years, depending on the project). This covers defects, leaks, and structural integrity when installed by our certified team—giving you peace of mind for decades.

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  • Can glass block windows include ventilation or operable vents? Yes, we can incorporate vented sections or awning-style vents into many designs, allowing fresh air circulation while maintaining privacy, light, and security. This is especially popular for basement windows where code or comfort requires airflow.

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  • Will installing glass block windows increase my home's energy efficiency? Definitely—the thick glass and sealed mortar joints provide excellent thermal insulation, reducing heat loss/gain and lowering energy bills. Combined with natural daylight (reducing artificial lighting needs), they offer long-term savings and qualify for potential energy-efficient upgrades in many cases.

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  • How do I prepare for a glass block window installation? Clear the area around the window (inside and out) and ensure easy access for our crew. We'll handle old window removal, debris haul-away, and full cleanup so your day stays low-stress.

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  • Why choose Legacy Glass Block for installation instead of DIY or general contractors? We specialize exclusively in glass block with decades of experience. This means fewer callbacks, better waterproofing, and results that look stunning and last. Our satisfied customers across the region prove the difference professional expertise makes.

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