Cornerstone Windows & Doors
Architectural aluminum systems designed around your project.
Our product range includes large-format aluminum windows, bifold doors, sliding doors, glass wall systems, pivot doors, and custom entry solutions. We work with homeowners, builders, architects, contractors, and design professionals to develop openings that fit the architecture, dimensions, and performance requirements of each project.
From large-format aluminum windows to bifold doors, sliding glass systems, pivot doors and glass walls, Cornerstone helps California clients create clean architectural openings with expansive views and modern aluminum frames. California’s mix of strict Title 24 energy codes, Wildland-Urban Interface fire requirements and coastal salt-air exposure calls for systems that are engineered, not just installed — that’s where our custom approach comes in.
01 / Windows
Aluminum Windows for California Architecture
Clean lines, narrow sightlines, and expansive glass can bring more natural light and a stronger connection between indoor and outdoor spaces.
Glass and framing options can be selected around the project's design and performance requirements.
Custom Aluminum Windows
Aluminum Windows for California Homes & Commercial Projects
Custom aluminum windows offer slim profiles, large glass areas and architectural flexibility for modern California construction. Cornerstone supplies window systems for new homes, renovations, builder projects and commercial applications across the state.
Thermally broken frames and NFRC-rated Low-E glass help projects meet Title 24, with ignition-resistant options for Wildland-Urban Interface zones. Available configurations include picture, casement, tilt-and-turn, sliding and custom architectural window designs.
02 / Doors
Pivot Door
Architectural Doors & Large Openings
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Aluminum bifold doors
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Sliding & lift-slide doors
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Large glass wall systems
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Pivot doors
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French and swing doors
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Thermally broken iron doors
Configurations can be designed for residential and commercial applications, with options such as Low-E glass, tempered glass, argon-filled insulated glass, multipoint hardware, and smart-lock-ready active doors where applicable.
Bifold Doors for Indoor Outdoor Living
Bifold door systems allow multiple panels to fold away and create wide openings between interior and exterior spaces.
With California’s year-round outdoor living, bifold systems suit pool decks and ocean-view terraces, with marine-grade finishes for coastal homes.
Bifold Door Systems
SLIDING DOOR SYSTEMS
Large Aluminum Sliding Doors & Glass Walls
Cornerstone provides modern aluminum sliding door systems and large glass wall solutions for residential and commercial projects throughout California.
Insulated, Low-E glass helps meet Title 24 performance targets while large-format sliding and lift-and-slide systems create the seamless indoor-outdoor sightlines California architecture is known for. Options include large multi-panel sliding doors and minimal-frame configurations.
Our Process
Designed Around Your Project
Every opening is different. We help coordinate dimensions, configuration, glass, finishes, hardware, and project requirements before production.
For projects requiring additional protection, impact-resistant and high-wind configurations are also available where appropriate.
Real Project Installations
Aluminum windows and doors built for distinctive architecture.
Explore Cornerstone installations featuring custom aluminum windows, bifold doors and large architectural openings.
What Our Customers Say
★★★★★
“The bifold doors completely changed our pool area. When they are open, we can see the whole backyard from inside, and the space feels connected instead of closed off. Cornerstone also installed the retractable screen, so we can enjoy the breeze without letting bugs in.”
Cornerstone customer · Pool-area bifold doors + retractable screen
★★★★★
“They replaced all 14 windows in less than three days. The crew kept the house clean, walked us through every window before leaving, and the house felt less drafty almost right away.”
Karen M. · Full window replacement
★★★★★
“Our old patio door fought us every summer. The new sliding door opens with one hand, seals properly, and looks like it was always meant to be part of the house.”
David R. · Sliding patio door
Where We Work
California Projects, Nationwide Support
We support projects throughout California, including Los Angeles, San Diego, San Francisco, San Jose, Sacramento, Santa Barbara, Newport Beach, Beverly Hills, Malibu, Palm Springs, Napa Valley and Orange County, and work with clients across the United States.
Whether you are a homeowner planning a renovation, a builder working on a custom residence, or an architect specifying products for a commercial project, we can help you develop the right window and door package.
Cornerstone Windows & Doors · 592 Val Verde St, Aubrey, TX 76227 · 855-630-3982
Builders • Architects • Homeowners
Planning a new construction or renovation?
Send us your plans, opening dimensions or project requirements. Our team can help you identify the right aluminum window, bifold door, sliding door, pivot door or glass wall system for your California project.
Request a Quote
Common Questions
California Aluminum Windows & Doors FAQ
Are Cornerstone’s aluminum windows Title 24 compliant?
Yes. Cornerstone specifies thermally broken aluminum frames, Low-E insulated glass and NFRC-rated performance data to help projects meet California’s Title 24 energy code requirements. We can supply documentation your architect or Title 24 consultant needs for permitting.
Do you offer wildfire and Wildland-Urban Interface (WUI) rated systems?
Yes. For projects in California’s Wildland-Urban Interface zones, we offer dual-pane tempered glass and ignition-resistant aluminum framing options built to meet California Building Code Chapter 7A requirements.
How do aluminum windows and doors hold up in coastal California climates?
Our aluminum systems can be specified with marine-grade finishes and corrosion-resistant hardware for coastal properties exposed to salt air, from Malibu and Santa Barbara to San Diego.
Do you deliver and coordinate installation support across California?
Yes. Cornerstone coordinates nationwide delivery and installation support for projects throughout California, including Los Angeles, San Diego, the Bay Area, Sacramento and Orange County. Contact us with your project details for a specific timeline.
