Premium Fiberglass Windows for Walnut Creek, CA Homeowners

If the windows in your Walnut Creek, California home are starting to show signs of aging—drafts, condensation, difficulty opening, or rising energy bills—it may be time for a meaningful upgrade. Even windows that look fine on the surface can quietly underperform, costing you comfort and efficiency. Fortunately, Custom Exteriors offers one of the most trusted solutions available today: Infinity® from Marvin fiberglass windows.

Infinity windows are widely recognized as some of the best replacement windows in the industry, combining strength, beauty, and long-term performance. Paired with our expert installation and exceptional customer service, it’s no surprise that so many Walnut Creek and Bay Area homeowners choose Custom Exteriors for their window replacement projects.

Why Infinity® from Marvin Windows Are the Ideal Upgrade for Your Walnut Creek Home

Choosing the right replacement window is about more than aesthetics—it’s about finding a product that enhances comfort, improves efficiency, and withstands decades of use. Infinity® from Marvin checks all of these boxes and more. Here’s why homeowners love them:

Built with Ultrex® Fiberglass for Superior Strength

Infinity windows are crafted from proprietary Ultrex® fiberglass—one of the strongest, most durable materials available. Tested to outperform vinyl, wood, and aluminum, Ultrex resists warping, swelling, rotting, and cracking, even during Walnut Creek’s hot summers and cool winters.

Slimmer Frames, Bigger Views

Because Ultrex is so strong, it allows for narrower window profiles, giving you more glass and less frame. That means:

• More natural light
• More expansive views of your property
• A cleaner, modern appearance

Fade-Resistant, Low-Maintenance Finish

Infinity windows feature a durable, proprietary acrylic finish that resists fading, peeling, and discoloration. Unlike wood, they don’t require constant sanding, painting, or refinishing—just long-lasting beauty with minimal upkeep.

Exceptional Energy Efficiency

Ultrex fiberglass expands and contracts at nearly the same rate as glass, reducing stress cracks, seal failures, and air leaks. This helps maintain a tight seal and consistent insulation, improving your home’s energy performance year-round.

Customizable Designs to Match Any Walnut Creek Home

Infinity offers a wide variety of:

• Window styles (casement, double-hung, sliders, picture, awning, specialty shapes)
• Frame colors and interior finishes
• Grids, hardware, and decorative accents

Whether you live in a traditional Walnut Heights property or a modern home near Rossmoor, Infinity windows can be tailored to fit your exact style.

Trust Custom Exteriors for Expert Window Installation

At Custom Exteriors, premium products are only the beginning. Our AAMA-certified installers ensure your Infinity windows are installed with precision, protecting your investment and maximizing performance. Walnut Creek homeowners choose us for our:

• Decades of window replacement expertise
• Clean, professional installations
• Transparent communication and excellent customer care
• Deep knowledge of Bay Area home styles and climate needs

With Custom Exteriors, you’re not just getting new windows—you’re upgrading your home for decades to come.

Transform Your Home with Infinity® from Marvin

If you’re looking for the perfect combination of strength, efficiency, and design flexibility, Infinity® from Marvin windows are a smart choice. When paired with Custom Exteriors' top-tier craftsmanship, you can expect flawless results that enhance both comfort and curb appeal.

Contact us today to schedule your free consultation and take the first step toward beautifully installed Infinity windows for your Walnut Creek, CA home.