Curtain Wall System: Types, Materials, and Designs for 2026

A curtain wall system is that glass-and-metal skin you see wrapped around office towers and hotel lobbies. It hangs off the building’s frame, not the other way around. The frame carries the weight and the wall just keeps the weather out and lets the light in.

Sounds simple. It isn’t, once you start picking a type, a material, and a finish that’ll survive your climate for the next 30 years.

We put this guide together after specifying curtain wall systems for clients. Below you get every type worth knowing, the materials, 2026 design, and how a curtain wall system actually differs from a window wall.

Quick Summary

If you only need one rule to work from: match the system type to your building’s height first, then let climate decide the glazing and finish.

What Is a Curtain Wall System?

A curtain wall system is an exterior wall that attaches to the building’s structural frame but doesn’t hold up any floor or roof load. That’s really the whole idea. It hangs, like a curtain, hence the name.

Where do you actually see these?

1. Commercial towers and office skyscrapers
2. Hotels, resorts, and hospitality builds
3. Hospitals and other institutional projects
4. High-end villas, and increasingly, mixed-use residential

But it’s not just about looks. A properly built system blocks air and water from getting in. It trims energy bills, and floods interiors with daylight in a way a punched-window wall simply can’t match.

What Are the Main Components of a Curtain Wall System?

Five parts that make up nearly every curtain wall system are mullions, transoms, glazing, spandrel panels, and anchors. 

What Are the Types of Curtain Wall Systems?

Four types cover most real-world projects. Those are stick, unitized, semi-unitized, and point-supported. Which one you need really comes down to building height and how much time you’ve got before handover.

1. Stick System

Built on-site, one mullion at a time, one glass panel at a time. Slower, sure. But it’s the go-to for low-rise buildings and awkward shapes where a crew needs room to adjust as they work.

2. Unitized System

Here, panels come pre-assembled and pre-glazed straight from the factory, then get craned onto the building. Less site labor, faster schedule, fewer weather delays.

3. Semi-Unitized System

A bit of both worlds. Some components arrive prefabricated, others get finished on-site. Good middle ground when the budget can’t quite stretch to full unitized but the timeline still matters.

4. Point-Supported (Spider) System

No heavy framing here, just metal fittings holding glass panels at their corners. This is what gives hotel lobbies and grand entrances that almost-invisible, all-glass feel.

What Materials Are Used in Curtain Wall Systems?

Aluminum and glass do most of the heavy lifting here. Steel and composite panels show up too, but usually only when a project needs something specific.

Aluminum Framing

Why aluminum? It’s light, it resists corrosion, and it extrudes into almost any custom profile a designer dreams up. Add a thermal break, an insulating strip inside the frame, and you cut heat transfer without losing an ounce of strength.

Glass and Glazing Options

Not all glass performs the same, and this is where a lot of budgets get decided:

1. Low-E coated glass reflects heat, still lets light through
2. Laminated glass adds safety, cuts down noise
3. Insulated glass units double or triple glazed, better thermal numbers
4. Tempered glass takes an impact and breaks safely instead of shattering

Steel and Composite Panels

Very tall towers, or anything sitting in a high-wind coastal zone, often need steel where aluminum alone won’t cut it. And if a project wants texture over glass, composite metal panels or stone veneer step in instead.

Curtain Wall Design Trends for 2026

Two things are steering curtain wall design this year, how much energy a facade wastes, and how dark it looks doing it.

1. Thermal Break Technology

An insulating strip splits the interior and exterior aluminum apart, and honestly, that one detail can make or break a building’s energy rating. More specs now lean on standards from AAMA and rating guidance from ENERGY STAR as a baseline, not an afterthought.

2. Dark and Matte Aluminum Finishes

Silver’s on its way out. Matte black and bronze frames are showing up on new towers and villas because, frankly, they look more premium. And, they hide fingerprints and weathering a lot better too.

3. Double-Skin Facades for Hot Climates

Add a second glass layer with a ventilated gap between the two, and solar heat gain drops fast. It costs more to build. It also costs a lot less to cool, which is why the Gulf and Southeast Asia keep asking for it.

4. Smart and Electrochromic Glass

Glass that tints itself as sunlight shifts, no blinds required. Still pricey. Still niche. But 2026 flagship projects are requesting it more than they were even a year ago.

Curtain Wall vs Window Wall: What’s the Difference?

A curtain wall runs continuously past the floor slabs and anchors back to the structure. While a window wall sits inside one floor’s opening, slab to slab. 

How to Choose the Right Curtain Wall System

comes down to three things, your building’s height, your local climate, and how fast you need it built.

1. Check height first, stick systems for low-rise, unitized for anything tall
2. Climate next, coastal and desert sites need tougher sealing and better solar control
3. Talk to your structural engineer early about wind and seismic loads
4. Certifications matter, so check NFRC, CE marking, ASTM ratings
5. And don’t forget the timeline, unitized systems go up dramatically faster on tall buildings

Why Choose Starveil for Your Curtain Wall System

28 years. One 45,000 m² factory in Foshan. That’s how long we’ve been building curtain wall systems, and why clients trust us on the tough projects. The ones where a facade failure isn’t an option.

We don’t buy from a workshop and slap our label on it. Our own team designs, cuts, welds, and glazes every single order. NFRC and CSA certified for North America, CE marked for Europe, AS2047 rated for Australia and New Zealand.

1. 28 years in business, 1,500+ projects completed across the globe
2. Free design service, with 3D renderings 
3. Thermal break profiles engineered for hot, cold, and coastal conditions alike
4. On-site installation guidance, plus remote engineer support 

Take a look at our curtain wall systems directly. Or check out the design service to see how a floor plan turns into a finished facade. 

If you’re specifying a curtain wall system for your next project, get a free quote from Starveil and our engineers will send back a design and 3D rendering within 24 hours.

FAQs

What is the curtain wall system?

It’s a non-structural exterior wall attached to a building’s frame. It’s built to resist weather and wind, not to carry any load. 

What are the two types of curtain walls?

Stick systems and unitized systems. Stick systems are assembled on-site piece by piece. Unitized systems arrive already built and glazed from the factory. 

What is a curtain wall in construction?

On a job site, it’s the outer skin protecting the building from rain, wind, and temperature swings. While every structural load gets passed back to the frame through mullions, transoms, and anchors. 

What is the difference between a curtain system and a curtain wall in Revit?

A curtain wall in Revit is a wall type with fixed grid lines and panels set at the family level. A curtain system, on the other hand, gets applied to a mass or a face and uses grids you can adjust independently.