Energy Efficient. Beautiful. Built to Last. Installed by Cornerstone Restoration.

 

Cornerstone Restoration provides professional window and patio door replacement for homeowners in Schaumburg, IL and the surrounding communities. We work with the most trusted brands in the industry — Pella®, Andersen®, Marvin®, Quaker®, and Midway Windows — offering premium vinyl, fiberglass, and wood windows to match every home design, energy-efficiency need, and budget.

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Every installation is performed to manufacturer specifications for long-term durability, weather protection, and thermal performance. Whether you’re replacing outdated windows, upgrading to improve comfort, or boosting your home’s value, we deliver results built to last.

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🎥 Watch: Start-to-Finish Window Installation

 

Watch our team replace a window step-by-step so you know exactly what to expect during your project:

📽️ Full Window Installation Process (Start to Finish)
 

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This video walks you through:
✅ Full removal of the old window
✅ Inspection for hidden damage
✅ Frame preparation & insulation
✅ Proper flashing techniques
✅ Window setting, leveling & fastening
✅ Exterior sealing & interior trim work
✅ Final quality checks for airtight, energy-efficient performance

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Homeowners love this video because it shows the exact installation standards we bring to every project in Schaumburg.

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⚡ Energy Savings You Can Expect

 

Replacing old windows is one of the highest-ROI upgrades for homes in Illinois.
Modern windows can reduce energy loss by up to 30%, depending on:

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✅ Your current window age
✅ Draftiness and seal failure
✅ Number of panes
✅ UV/low-E coatings
✅ Insulated frame material

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Homeowners typically experience:

• Lower heating costs in winter (critical in the Chicago climate)

• Reduced cooling costs in summer

• Less outdoor noise

• Better comfort near windows

• More consistent indoor temperatures

 

Vinyl and fiberglass tend to offer the highest insulation, while wood offers excellent performance with premium aesthetics.

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🧰 Types of Windows We Offer

 

🪟 Vinyl Windows

Affordable, energy-efficient, and low-maintenance.

Vinyl is the best choice when you want:

• A cost-effective solution

• Great insulation

• No painting or staining

• Strong performance in Schaumburg's temperature swings

 

Best for: Budget-friendly replacement, long-term energy savings, low-maintenance lifestyles.

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🛡️ Fiberglass Windows

Stronger than vinyl and built to handle extreme temperature fluctuations without warping. Fiberglass frames offer:

• Superior energy performance

• Slimmer frame profiles (more glass area)

• Long-lasting structural rigidity

• A premium, modern look

 

Best for: Homes that need maximum durability, strength, and insulation — especially in harsh Illinois seasons.

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🌲 Wood Windows

Timeless, warm, and architecturally stunning. Wood offers:

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• Premium aesthetic appeal

• Natural insulation

• Customizable stains and paints

• Perfect match for historic or high-end homes

 

Best for: Homeowners who prioritize beauty, customization, and authentic material over maintenance requirements.

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🎨 Interior & Exterior Color Options

 

Modern windows completely transform the look of your home.

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Interior Options

• Natural wood grains

• White, almond, tan

• Stains and custom finishes

• Designer color palettes for modern interiors

 

Exterior Options

• Classic white

• Bronze, black, brown

• Custom color matches (depending on brand)

• Factory-applied finishes for maximum weather protection

 

These colors allow you to refresh both curb appeal and interior style in one upgrade.

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📊 Choosing the Right Material

 

Choose Vinyl if you want:
✅ Low cost
✅ Great energy efficiency
✅ Zero-maintenance
✅ Fast ROI

 

Choose Fiberglass if you want:
✅ Best long-term durability
✅ Highest strength
✅ Premium performance
✅ A modern, sleek look

 

Choose Wood if you want:
✅ Timeless beauty
✅ Perfect color/stain customization
✅ A luxury appeal for historic or premium homes

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🏗️ Window Replacement Options

 

🔨 Full-Frame Window Replacement

A full-frame replacement removes the entire old window — frame, sash, and trim — down to the rough opening.

 

Choose full-frame when:
✅ You want to fix hidden rot or moisture issues
✅ Your old frames are damaged or out of square
✅ You want a clean “new construction” look
✅ You want to change window sizes or styles
✅ You want maximum energy efficiency

 

Important Note About Siding & Trim

Full-frame installations often require removing or loosening exterior siding or trim around the window for proper access and waterproofing.

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We handle this carefully — whether you have vinyl siding or premium James Hardie Fiber Cement.

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You can learn more here:
👉 Vinyl Siding: 
👉 James Hardie Siding:

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We reinstall everything cleanly and seal all transitions for a watertight finish.

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🪛 Pocket (Insert) Window Replacement

A pocket replacement keeps the existing frame and installs a new unit inside it.

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Choose pocket windows when:
✅ Your existing frames are in good shape
✅ You want a faster, less invasive installation
✅ You want to preserve interior & exterior trim
✅ You want a cost-friendly replacement

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Pocket replacements don’t allow size changes, but they are excellent for cost-effective upgrades.

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🚪 Patio Doors & Sliding Doors

 

We install high-performance patio doors from Pella, Andersen, Marvin, Quaker, and Midway Windows.

 

Available options:

• Sliding patio doors

• Hinged patio doors

• French swinging doors

• Fiberglass, vinyl, and wood options

 

✅ Upgrade: Sliding Door → French Swinging Door

If you want a more premium aesthetic or wider opening, we can convert your existing sliding door into a beautiful French swinging door system.

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🌤️ Want More Natural Light? Add a Skylight.

 

Homeowners often choose to brighten dark kitchens, hallways, or bathrooms by adding a skylight.

We install Velux skylights, which offer leak-free performance and excellent energy efficiency.

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👉 Learn more about skylights: 

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🔥 Custom Copper Roofs for Bay & Bow Windows

A premium upgrade option — we can install custom hand-crafted copper roofing over bay or bow windows.

 

This adds:

• A high-end architectural look

• Extreme durability

• Weatherproofing for decades

• Beautiful patina aging over time​

 

We can install copper roofs during a window project or over existing bay/bow units.

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👉 Learn more about our custom copper work.

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🏡 Why Homeowners Choose Cornerstone Restoration

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• Over 20 years of experience serving homeowners in Illinois

• Local, licensed, and insured

• Certified installation of Pella, Andersen, Marvin, Quaker & Midway

• Full-frame and pocket replacement expertise

• Vinyl, fiberglass, and wood options for any budget

• Seamless integration with siding, trim, and flashing

• Clean, precise, manufacturer-approved installations

• Dedicated to energy efficiency, long-term value & craftsmanship

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