Trusted by Homeowners and Professionals Nationwide
Hundreds of satisfied clients choose Cornerstone Bifold Doors for unmatched quality, durability, and style.
“Our new bifold doors completely transformed our patio — they glide so smoothly, and the craftsmanship is incredible!”
— Homeowner Review
“Exceptional performance and finish. Cornerstone is our go-to for aluminum bifold door projects.”
— Contractor Partner
Why Choose Our Custom Aluminum Bifold Doors
Engineered for Performance - Thermally Broken Aluminum Frames - Low-Maintenance, Long-Term Durability
Smart Design
Exceptional Comfort
Long-Term Value
Our slim-frame **custom bifold door systems** feature expansive glass for panoramic views and abundant daylight.
Enjoy year-round comfort with Low-E insulated glass and thermally broken frames that keep interiors cooler in summer and warmer in winter.
Made from high-grade 6063-T5 aluminum, Cornerstone bifold doors resist corrosion, fading, and warping — ensuring decades of smooth operation and minimal maintenance.
Designed for Modern Living
Popular Bifold Door Configurations
Every space is different — that’s why our custom aluminum bifold doors are made-to-order in a range of panel layouts and opening styles:
• 3-Panel Left Fold
Ideal for smaller openings where panels stack cleanly to one side without interrupting flow.
• 4-Panel Center Split
Symmetrical and balanced — two panels fold left and two fold right for a refined architectural look.
• 6-Panel Outward Fold
Creates wide indoor-outdoor transitions for patios, sunrooms, and entertainment spaces.
• XL 8+ Panel Panoramic Opening
Dramatic, wall-to-wall openings designed to maximize views and connect interior living spaces seamlessly with the outdoors.
Need help choosing the best configuration?
Our team will guide you based on your layout, opening size, climate, and design goals.
Our custom bifold door systems are built to your exact size and opening requirements.
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Start Your Project & Save
Whether you’re building, remodeling, or upgrading your space, Cornerstone provides custom aluminum bifold doors with expert support from design to installation.
Your information is secure. A Cornerstone specialist will contact you within 24 hours.
Hassle-Free Installation. Premium Quality. Affordable Luxury.
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