
Windows play a vital role in both the appearance and protection of any property. Over years of exposure to harsh weather—sun, rain, wind, and fluctuating temperatures—glass, frames, and seals naturally begin to wear down. Instead of committing to a full window replacement, which can be costly and disruptive, repairing your existing windows is often the more efficient and budget‑friendly solution.
At WindowQW, we specialize in restoring and revitalizing windows for homes and businesses throughout Lake Forest, IL. Our team brings aging wood windows back to their original strength and beauty, carefully repairing everything from glass and sashes to frames and hardware.
Complete Window & Glass Restoration Solutions
Every project begins with a detailed assessment to determine the most effective repair strategy. We restore structural components, replace damaged parts, and ensure the window maintains its original style and functionality. Whether your property features modern windows or historic architectural designs, we provide reliable, long‑lasting restoration.

Our services include:
Windowsill Repair & Replacement
Deteriorating sills can lead to moisture issues, drafts, and energy loss. We repair or replace sills made of wood, vinyl, or metal to prevent further damage.
Sash Repair & Replacement
A sturdy sash is essential for proper window operation. We restore worn or broken sashes to improve stability, appearance, and ease of use.
Skylight Repair
From damaged seals to cracked glass, we address skylight issues that can cause leaks or reduced insulation.
Patio Door Repair
We fix damaged frames, malfunctioning mechanisms, and worn seals. When necessary, we also replace patio door glass.
Window Glass Replacement
Our team installs single-, double-, and triple-pane units, along with insulated, tempered, annealed, and low‑E glass options.
Glass Repair
Minor cracks and chips can often be repaired quickly, restoring safety and clarity without replacing the entire pane.
Foggy Window Restoration
We remove moisture trapped between panes to restore visibility and improve insulation.
Why Window Repair Is the Better Choice
Full window replacement can be expensive, time‑consuming, and unnecessary. Our repair services offer a practical alternative that preserves your property’s character while improving performance and efficiency.
Key advantages of repairing your windows:
- Maintains original charm: Restoring existing windows keeps the architectural style intact.
- Extends lifespan: Quality repairs can add many years of reliable use.
- Improves energy efficiency: Fixing seals, frames, and glass reduces heat loss and enhances comfort.
- Significant cost savings: Repairs can be up to 75% more affordable than full replacement.
How we work





