Large-format glazing. And up to 6 × 3.21 m in a single pane!
We can manufacture anything for you – from a single pane for a specific building to projects worth tens of millions. Here are the parameters, limits, and reasons why architects choose Obsidian Glass for panoramic projects.
Large-format glazing has long ceased to be an architectural extravagance for a few chalets in the Alps. It is an affordable building element that we manufacture in the Czech Republic without compromise. A single panel with an area of almost twenty square meters opens the interior to the outdoors in a way that a classic window could never claim - and today we can deliver it with thermal insulation that was not even possible for standard windows ten years ago.
What "large-format" means in practice
We manufacture Obsidian.glass large-format glazing up to dimensions of 6,000 x 3,210 mm. This is a limit pushed in Europe by only a few production lines, and we are one of them. A single panel can thus cover an entire wall of a living space, a side of a pool hall, or a showroom display without being divided by profiles, transoms, or vertical joints.
In practice, this means several specific things. The Schüco ASE 80 sliding system can move sashes with an area of over 15 m² - the entire wall slides to the side as one piece. Fixed glazing in a villa facade is designed with dimensions that follow the architectural grid of the building, not the technological limits of the glass. And for showrooms or hotels, vistas are created where the glass becomes an invisible boundary between the interior and the panorama.
One glass pane, or fifty million
The production of large-format glazing usually presents architects with an uncomfortable choice: either a large supplier with a minimum volume requirement, or a small glassworks that can handle a one-off large piece but cannot deliver premium specifications. We solve both paths with a single line.
We produce orders worth tens of millions of crowns for residential development facades - and also a single pane of glass to complete a specific wall for a private building. The same standard, the same specifications, the same traceability for every panel. This flexibility is the reason why architects come to us with orders from a single piece upwards.
SuperSpacer is the detail that makes the difference
The spacer bar between the panes of glass may seem like a minor detail. In double or triple glazing, it is a narrow strip that maintains the gap. In reality, it decides whether your glass will fog up, how long the seal of the cavity will last, and by how much the overall Uw value of the window will improve.
This role becomes even more critical with large-format glazing. A longer perimeter of the panel means a longer spacer and a higher risk of leaks and thermal bridging along the edges of the glass. A classic aluminum spacer is a compromise on a 6 x 3 m glass pane - and we do not want to make compromises on premium buildings.
That is why we robotically apply SuperSpacer to all large-format products. A structural foam spacer that simultaneously seals, insulates, and dampens stress in the corner transitions of the panel. Robotic application eliminates human error at the most vulnerable step of production. The result is simple: minimal condensation, longer life of the cavity, and measurably better energy performance of the entire window. For large glass panes, it is the only correct choice today.
Quadruple glazing Ug 0.3 even for panoramas
Historically, large panels have had poorer thermal insulation performance than small windows. Logically so - larger surface area means greater heat loss. For many years, architects resolved this with a compromise: panoramic glazing only where the project could bear higher heating bills.
This equation changed with quadruple glazing. Today, Obsidian.glass offers quadruple glazing Ug 0.3 W/m²K, which even in large formats has half the heat loss of classic triple glazing. Maximum savings on heating and cooling, a significantly warmer glass surface on the inside, and an end to cold radiation near the window. For panoramas where residents traditionally felt cold from the glass during winter despite an excellent profile, this is a change that is heard - and felt - in the room.
We discussed the difference quadruple glazing makes in common and large windows in more detail in a separate article Quadruple vs triple glazing: the real difference in heating costs.
Specifications of Obsidian large-format glazing
Parameter | Market standard | Obsidian Glass |
|---|---|---|
Maximum panel size | 3,200 x 3,210 mm (limit) | 6,000 x 3,210 mm |
Spacer bar | Aluminum / composite | SuperSpacer (robot) |
Composition | Triple glazing Ug 0.5 | Quadruple glazing Ug 0.3 |
Minimum order | 10-50 pcs | 1 pc |
Maximum order | Limited by capacity | Tens of millions of CZK |
Traceability | Batch | QR code on every element |
Today, large-format glazing has stopped being a luxury feature and has become an architectural standard for premium developments. At the same time, however, pressure on parameters is higher than ever - energy performance, acoustics, structural engineering. That is why we equip large panels with quadruple glass and SuperSpacer, even when the investor is ready to accept a weaker specification. For a panel that will stand on a facade for forty years, it makes no sense to save on parameters that can be locked in over two days in production.
State-of-the-art production in the Czech Republic
Large-format glazing requires a production line that can precisely cut, grind, coat, assemble into insulated glass, and inspect panels weighing well over 700 kg at the level of individual components. This is not a challenge for a common glass factory - this is an investment in technology that only a few manufacturers in the Czech Republic can afford.
Our line is built for this task from the ground up. Rated for a maximum format of 6 x 3.21 m, equipped with robotic application of spacer frames, its own coating unit, and an inspection system that marks every panel with a QR code containing complete specifications. For the architect, this means shorter delivery times, local technical support during details design, and the opportunity to come and see the manufacture of their specific glass.
You can find more about our manufacturing process, technologies, and capacities on our production facilities page.
Where we install large-format glass today
Private villas and panoramic residences. Open living spaces with Schüco ASE 80 sliding walls, fixed glazing for mountain and coastal buildings, atriums and winter gardens as part of the main living area.
Facades of residential and office projects. Structural glazing for facades where every panel follows the architect's grid. Deliveries in volumes of tens of millions of crowns for entire developments.
Hotels, restaurants, and wellness. Panoramic spaces with views, pool halls with extreme demands on condensation resistance, glass walls between interiors and terraces.
Showrooms and representative premises. Shop windows without vertical joints, glass walls in shops and galleries where the panel works as an invisible boundary between the exterior and the exhibit.
Start with dimensions, we will fill in the rest
Large-format glazing is always about details: specific dimensions, structural load of the opening, orientation to cardinal directions, required safety class, acoustics of the location. Only from these does the correct glass composition, spacer bar type, or heat-treated layer, or solar coating emerge.
Send us your project - or just the dimensions and type of building. We will get back to you with the technical specifications, calculation of parameters for your specific situation, and a price offer that remains valid from the first pane of glass to the entire facade.
Contact us: info@obsidianglass.cz