Trusted by Architects. Built for Precision. Backed by Casco.
High-Performance Windows, Doors, and Retrofit Solutions—Engineered for Real-World Results
Casco is a Chicago-based manufacturer of aluminum-clad wood windows, patio doors, storm products, and retrofit solutions—trusted by architects for consistent quality, custom capabilities, and nationwide reach. Every unit is fabricated in-house, giving us full control over both the aluminum and wood components for unmatched consistency in fit, finish, and field performance.
Unlike manufacturers that prioritize nominal sizing for marketing purposes, Casco continues to size products based on true primary glass dimensions—a practice rooted in the early days of architectural window fabrication. This approach often results in more accurate, real-world fits for replacement work, helping installers avoid extensive modifications and preserve existing openings.
Why Architects Choose Casco
🔧 Fully In-House Manufacturing
Casco designs, extrudes, paints, fabricates, assembles, and finishes all aluminum components under one roof—including our own custom aluminum profiles. Wood fabrication is also completed in-house, providing architects with a single-source solution for high-performance, mixed-material designs. This level of control ensures consistency across product lines, reduces third-party coordination issues, and keeps costs in check—delivering premium quality at a price point where many competitors offer only entry-level, builder-grade products.
- Tight tolerances and real-world sizing—including primary glass dimensions for better retrofit compatibility
- Uniform color match across windows, doors, and accessories
- Fewer change orders and fewer surprises on site
🎨 Durable, Color-Consistent Finishes
All exterior aluminum components are finished to AAMA 2604 standards—ensuring long-term durability, color retention, and resistance to chalking and fading in even the harshest climates.
- In-house aluminum extrusion, painting, and finishing.
- Seamless color match across windows, patio doors, storm products, and porch systems
- Uniform appearance across product lines, even on multi-phase projects
🛠️ Custom-Built for Complex Needs
Whether it’s a historic renovation or a modern custom build, Casco partners with architects to meet design intent—without compromising timeline or performance. While we don’t include every bell and whistle, we focus on what matters: simplifying the process from start to finish. From design to delivery, our solutions are built to keep specs clean, selections clear, and jobs on track.
- Standard and custom sizes, configurations, and hardware
- Built-to-spec modifications on request if available
- Special solutions for matching field conditions
- Streamlined ordering and selection process—from architectural planning to jobsite delivery
🚪 Broad Product Range—Built for Architectural Projects
Casco manufactures a complete lineup of high-performance windows, doors, and retrofit solutions—engineered for architects who demand quality, design flexibility, and reliable support. Our products are built to meet the same performance and design standards found in major national brands, with enhanced in-house control and dependable lead times.
- Aluminum-Clad Wood Windows & Patio Doors
- Energy-efficient systems with solid pine interiors and extruded aluminum exteriors
- Built for long-term durability, low maintenance, and clean architectural lines
- Ideal for custom homes, mixed-use developments, and design-forward residential projects
- Perfect for value-engineered projects where performance and aesthetics still matter.
- Precision-Built Storm Windows
- Custom-fabricated for retrofit, restoration, and historic preservation
- Available in Blind Stop or Overlap mounting configurations
- Provides energy upgrades without altering original windows
- Heavy-Duty Storm Doors
- Classic, no-frills design built for dependable performance and everyday utility
- Available in double outswing and single inswing configurations
- Custom sizes with full-view, kick panel, or screen options
- Color-matched aluminum frames to coordinate with window systems
- Built for entry doors, porches, and three-season room conversions
- Factory-Assembled Porch Enclosure Systems
- Pre-built aluminum units for screen rooms, seasonal enclosures, or screen room retrofits
- Cleaner alternative to site-built framing or screen wall kits
- Configurable with full glass, screen inserts, or kick panels
- Double-Hung Window Replacement Kits
- Factory-assembled aluminum-clad sash pairs with stain- or paint-ready pine interiors
- Included jambliner system transforms original wood windows into tilt-in, easy-clean units
- Preserves both interior and exterior millwork—ideal for historic restorations and remodels
- Custom-sized to 1/16" tolerance for a clean, accurate fit in existing frames
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Aluminum-Clad Casement Replacement Sashes
- Built-to-size aluminum-clad exteriors with stain- or paint-ready pine interiors
- Designed for field fitting into existing jambs or frames during sash-only replacement
- Retains the original aesthetic while improving energy performance and durability
- Commonly used in repair projects, sash failure replacements, or upgrading outdated single-pane glass
🧱 Designed for the Trade
From new construction to retrofit, Casco solutions are purpose-built for:
- Architects and builders
- Glazing contractors and window professionals
- Historic preservation and remodeling specialists
🌍 National Reach. Local Support.
Headquartered in South Elgin, Illinois, Casco partners with national wholesale chains to serve local contractors, architects, and building professionals across the U.S.
- No delivery fees on many pre-set routes
- Two-week notice scheduling helps projects stay on track
- Direct quoting and ordering via CASCOPRO
Work With a Manufacturer That Understands Field Realities
At Casco, we don’t just fabricate—we collaborate. From quoting to final delivery, every detail is managed by experienced professionals who understand jobsite constraints, installation demands, and architectural vision.
🔎 Looking for Specs, CAD files, or Project Support?
📩 Contact our architectural support team
🧰 Get started with a custom quote or submittal package
Casco Windows, Doors & Storm Products
Engineered in Chicago. Trusted Nationwide.