# Folding Glass Wall Systems Colorado | Alta Vetro > Bi-fold folding glass wall systems in Colorado — 95mm thermally insulated aluminum, four track options, CW-PG55 performance, integrated screens. Request a consultation. URL: https://alta-vetro.com/bi-fold-doors/ ![Folding / Bi-Fold Door Systems — Alta Vetro](/images/misc/bi-fold-door-system-folded-open-revealing-colorado.webp) Bi-Fold Systems # Thermally Insulated Bi-Folding Walls for True Indoor-Outdoor Living Thermally insulated aluminum bi-folding walls for true indoor-outdoor living. Last updated July 17, 2026 Request a Design Consultation [/contact/ →](/contact/) Explore the Collection [/products/ →](/products/) - Coverage Colorado Statewide - Collection 70+ Door Designs - Finishes 12+ Designer Palette - Installation Manufacturer-Backed The Product ## Fold an Entire Wall Away A bi-fold system does one thing a sliding wall can’t. It folds an entire elevation into a compact stack, leaving the opening fully clear. When the room is designed to become part of a patio, deck, or garden — with no fixed glass in the way — bi-fold is the pattern. Alta Vetro bi-fold systems are built on a 95mm structural-depth thermally insulated aluminum system. That depth is what allows the CW-PG55 commercial performance: wind load to 5,000 Pa, water tightness to 600 Pa, air tightness ≤ 0.3 cfm/ft², and thermal performance to 0.34 W/m²K. ### Refined in Daily Use Stainless steel pulleys and tracks resist corrosion and hold their action for decades. Anti-pinch double-layer gaskets protect fingers during operation and improve the seal at rest. Four floor-track options — including ADA-compliant low-profile and barrier-free flat tracks — coordinate with the interior detail and the accessibility program. Retractable screens integrate cleanly into the system, so the opening’s insect and light-control needs are answered without visual interruption. On exposed sites, the optional impact-rated hurricane pin system adds storm-load resistance without changing the daily operation. ### Configured for the Project Bi-fold specifications are always configured per project — panel count, stack direction, glass, finish, hardware, and threshold — so the wall matches the architecture and the way the client wants to live in the space. Our specification support carries architects and GCs through the CW-PG55 framing, structural integration, and installation coordination with The Install Company. What's Included ## Configured to Your Project - 01 95mm structural-depth thermally insulated aluminum system - 02 CW-PG55 commercial performance; wind load to 5,000 Pa, water tightness to 600 Pa - 03 Four floor-track options including ADA-compliant and barrier-free flat tracks - 04 Stainless steel pulleys, anti-pinch gaskets, and integrated retractable screens - 05 Impact-rated hurricane pin system available Why Alta Vetro ## The Difference in Every Detail Full-Wall Opening Fold an entire wall away for uninterrupted indoor-outdoor living. Commercial-Grade Performance 95mm structural depth and CW-PG55 rating handle demanding wind, water, and load conditions. Refined in Use Stainless steel pulleys and anti-pinch gaskets deliver quiet, safe daily operation. Integrated Detail Retractable screens and four floor-track options coordinate with the interior detail. The Process ## From Consultation to Certified Install 01 ### Design Consultation We review the opening, panel arrangement, and stack direction with you or your architect. 02 ### Configuration Track type, glass, finish, and hardware are configured to the project and orientation. 03 ### Specification & Order CW-PG55 performance framing and CAD details are delivered for the specification package. 04 ### Certified Installation Installation is coordinated through The Install Company for warranty confidence. The Portfolio ## Bi-Fold Systems in Colorado Projects ![Alta Vetro architectural detail 1](/images/misc/bi-fold-glass-wall-partially-folded-with-minimalis.webp) ![Alta Vetro architectural detail 2](/images/misc/flush-barrier-free-threshold-at-bi-fold-wall-ada-c.webp) ![Alta Vetro architectural detail 3](/images/misc/detail-of-top-hung-bi-fold-hardware-and-anti-pinch.webp) ![Alta Vetro architectural detail 4](/images/misc/great-room-with-bi-fold-wall-fully-open-onto-patio.webp) On the Record ## From Architects, Builders, and Homeowners > “The sightlines are extraordinary — the frame genuinely disappears into the view. Specifying Alta Vetro gave our clients the wall they wanted with the thermal performance the code demanded.” Architect, Mountain-Modern Studio Aspen & Snowmass > “The pivot door is the moment guests remember before they even step inside. Oversized, effortless to operate, and finished exactly to our palette.” Custom-Home Client Cherry Hills Village > “Alta Vetro delivered the same class of thermally broken, large-format glass at a price that actually fit the project. Accessible luxury is the right description.” General Contractor Vail & Beaver Creek FAQ ## Bi-Fold Systems — Common Questions ### How is bi-fold different from sliding? Bi-fold panels stack folded to one or both sides, opening the entire wall. Sliding systems open partially, with panels overlapping or pocketing. Bi-fold gives a fully unobstructed opening; sliding is often smoother for partial-open daily use. ### What is CW-PG55? CW-PG55 is a US commercial performance standard for wind load, water tightness, and structural integrity. Our bi-fold system meets it, which matters on exposed openings and larger commercial or estate projects. ### Can I get an ADA-compliant threshold? Yes. ADA-compliant low-profile and barrier-free flat tracks are two of the four floor-track options, and drainage is integrated at the threshold. ### How does the impact-rated pin system work? The optional impact-rated hurricane pin system reinforces the closed configuration against wind and impact loading. It is specified where storm resistance is a project requirement. ### Are the systems energy-efficient in cold climates? Yes. Thermal performance to 0.34 W/m²K with thermally insulated aluminum construction, low-E insulated glass units, and anti-pinch double-layer gaskets keep infiltration and heat loss down. ### How wide can the bi-fold opening be? The system is engineered for large multi-panel configurations. Panel counts and opening widths are configured per project — six-, eight-, and ten-panel walls are common on estate builds. Explore Further ## Related Systems ![Sliding Glass Door Systems](/images/misc/panoramic-lift-and-slide-glass-wall-opening-onto-c.webp) Sliding Systems ### Sliding Glass Door Systems [Sliding Glass Door Systems →](/sliding-glass-doors/) ![Specialty Systems](/images/misc/custom-architectural-glazing-detail-in-contemporar.webp) Specialty ### Specialty Systems [Specialty Systems →](/specialty-systems/) Go Deeper ## Bi-Fold Systems Guides concern ### Bi-Fold Performance Ratings for Demanding Applications (CW-PG55) The performance credibility to spec bi-folds on demanding projects — CW-PG55, wind load to 5,000 Pa, water tightness to 600 Pa, air tightness, hurricane pin option. [Bi-Fold Performance Ratings for Demanding Applications (CW-PG55) →](/guide/bi-fold-performance-ratings-for-demanding-applications-cw-pg55/) scenario ### Floor-Track Options: ADA-Compliant, Barrier-Free, and Flat Tracks Four bi-fold track options — ADA-compliant low-profile and barrier-free flat tracks with drainage integration, and when to choose each. [Floor-Track Options: ADA-Compliant, Barrier-Free, and Flat Tracks →](/guide/floor-track-options-ada-compliant-barrier-free-and-flat-tracks/) definition ### How Bi-Fold Door Systems Work (Thermal, Tracks, Screens) Bi-fold mechanics explained — folding panel operation, top-hung and bottom-rolling systems, thermal insulation, and track and screen integration. [How Bi-Fold Door Systems Work (Thermal, Tracks, Screens) →](/guide/how-bi-fold-door-systems-work/) comparison ### Bi-Fold Folding Walls vs. Sliding Systems for Your Opening Weigh bi-fold against sliding for your opening — full-open clearance vs minimal sightlines, stacking, thermal and cost differences, and ideal openings. [Bi-Fold Folding Walls vs. Sliding Systems for Your Opening →](/guide/bi-fold-folding-walls-vs-sliding-systems-for-your-opening/) ![](/images/misc/panoramic-floor-to-ceiling-glass-wall-overlooking-.webp) The Consultation ## Begin With a Design Consultation Share the project, the architecture, and the openings. We will guide you through finishes, glass, hardware, and configuration — and the manufacturer-backed installation that follows. Request a Design Consultation [/contact/ →](/contact/) Explore the Collection [/products/ →](/products/)